group_offset, bitmap))
printk(KERN_WARNING "%s: entry number %llu already freed\n",
__func__, (unsigned long long)req->pr_entry_nr);
-
- nilfs_palloc_group_desc_add_entries(inode, group, desc, 1);
+ else
+ nilfs_palloc_group_desc_add_entries(inode, group, desc, 1);
kunmap(req->pr_bitmap_bh->b_page);
kunmap(req->pr_desc_bh->b_page);
group_offset, bitmap))
printk(KERN_WARNING "%s: entry number %llu already freed\n",
__func__, (unsigned long long)req->pr_entry_nr);
-
- nilfs_palloc_group_desc_add_entries(inode, group, desc, 1);
+ else
+ nilfs_palloc_group_desc_add_entries(inode, group, desc, 1);
kunmap(req->pr_bitmap_bh->b_page);
kunmap(req->pr_desc_bh->b_page);
for (j = i, n = 0;
(j < nitems) && nilfs_palloc_group_is_in(inode, group,
entry_nrs[j]);
- j++, n++) {
+ j++) {
nilfs_palloc_group(inode, entry_nrs[j], &group_offset);
if (!nilfs_clear_bit_atomic(
nilfs_mdt_bgl_lock(inode, group),
"%s: entry number %llu already freed\n",
__func__,
(unsigned long long)entry_nrs[j]);
+ } else {
+ n++;
}
}
nilfs_palloc_group_desc_add_entries(inode, group, desc, n);
#include <linux/errno.h>
#include "nilfs.h"
#include "bmap.h"
-#include "sb.h"
#include "btree.h"
#include "direct.h"
#include "btnode.h"
/*
* Internal use only
*/
-
-void nilfs_bmap_add_blocks(const struct nilfs_bmap *bmap, int n)
-{
- inode_add_bytes(bmap->b_inode, (1 << bmap->b_inode->i_blkbits) * n);
-}
-
-void nilfs_bmap_sub_blocks(const struct nilfs_bmap *bmap, int n)
-{
- inode_sub_bytes(bmap->b_inode, (1 << bmap->b_inode->i_blkbits) * n);
-}
-
__u64 nilfs_bmap_data_get_key(const struct nilfs_bmap *bmap,
const struct buffer_head *bh)
{
__u64 nilfs_bmap_find_target_seq(const struct nilfs_bmap *, __u64);
__u64 nilfs_bmap_find_target_in_group(const struct nilfs_bmap *);
-void nilfs_bmap_add_blocks(const struct nilfs_bmap *, int);
-void nilfs_bmap_sub_blocks(const struct nilfs_bmap *, int);
-
/* Assume that bmap semaphore is locked. */
static inline int nilfs_bmap_dirty(const struct nilfs_bmap *bmap)
if (ret < 0)
goto out;
nilfs_btree_commit_insert(btree, path, level, key, ptr);
- nilfs_bmap_add_blocks(btree, stats.bs_nblocks);
+ nilfs_inode_add_blocks(btree->b_inode, stats.bs_nblocks);
out:
nilfs_btree_free_path(path);
if (ret < 0)
goto out;
nilfs_btree_commit_delete(btree, path, level, dat);
- nilfs_bmap_sub_blocks(btree, stats.bs_nblocks);
+ nilfs_inode_sub_blocks(btree->b_inode, stats.bs_nblocks);
out:
nilfs_btree_free_path(path);
return ret;
nilfs_btree_commit_convert_and_insert(btree, key, ptr, keys, ptrs, n,
di, ni, bh);
- nilfs_bmap_add_blocks(btree, stats.bs_nblocks);
+ nilfs_inode_add_blocks(btree->b_inode, stats.bs_nblocks);
return 0;
}
nilfs_commit_chunk(page, mapping, from, to);
nilfs_put_page(page);
dir->i_mtime = dir->i_ctime = CURRENT_TIME;
-/* NILFS_I(dir)->i_flags &= ~NILFS_BTREE_FL; */
}
/*
nilfs_set_de_type(de, inode);
nilfs_commit_chunk(page, page->mapping, from, to);
dir->i_mtime = dir->i_ctime = CURRENT_TIME;
-/* NILFS_I(dir)->i_flags &= ~NILFS_BTREE_FL; */
nilfs_mark_inode_dirty(dir);
/* OFFSET_CACHE */
out_put:
dir->inode = 0;
nilfs_commit_chunk(page, mapping, from, to);
inode->i_ctime = inode->i_mtime = CURRENT_TIME;
-/* NILFS_I(inode)->i_flags &= ~NILFS_BTREE_FL; */
out:
nilfs_put_page(page);
return err;
.readdir = nilfs_readdir,
.unlocked_ioctl = nilfs_ioctl,
#ifdef CONFIG_COMPAT
- .compat_ioctl = nilfs_ioctl,
+ .compat_ioctl = nilfs_compat_ioctl,
#endif /* CONFIG_COMPAT */
.fsync = nilfs_sync_file,
if (NILFS_BMAP_USE_VBN(bmap))
nilfs_bmap_set_target_v(bmap, key, req.bpr_ptr);
- nilfs_bmap_add_blocks(bmap, 1);
+ nilfs_inode_add_blocks(bmap->b_inode, 1);
}
return ret;
}
if (!ret) {
nilfs_bmap_commit_end_ptr(bmap, &req, dat);
nilfs_direct_set_ptr(bmap, key, NILFS_BMAP_INVALID_PTR);
- nilfs_bmap_sub_blocks(bmap, 1);
+ nilfs_inode_sub_blocks(bmap->b_inode, 1);
}
return ret;
}
struct nilfs_transaction_info ti;
int ret;
- if (unlikely(nilfs_near_disk_full(NILFS_SB(inode->i_sb)->s_nilfs)))
+ if (unlikely(nilfs_near_disk_full(inode->i_sb->s_fs_info)))
return VM_FAULT_SIGBUS; /* -ENOSPC */
lock_page(page);
.aio_write = generic_file_aio_write,
.unlocked_ioctl = nilfs_ioctl,
#ifdef CONFIG_COMPAT
- .compat_ioctl = nilfs_ioctl,
+ .compat_ioctl = nilfs_compat_ioctl,
#endif /* CONFIG_COMPAT */
.mmap = nilfs_file_mmap,
.open = generic_file_open,
int for_gc;
};
+void nilfs_inode_add_blocks(struct inode *inode, int n)
+{
+ struct nilfs_root *root = NILFS_I(inode)->i_root;
+
+ inode_add_bytes(inode, (1 << inode->i_blkbits) * n);
+ if (root)
+ atomic_add(n, &root->blocks_count);
+}
+
+void nilfs_inode_sub_blocks(struct inode *inode, int n)
+{
+ struct nilfs_root *root = NILFS_I(inode)->i_root;
+
+ inode_sub_bytes(inode, (1 << inode->i_blkbits) * n);
+ if (root)
+ atomic_sub(n, &root->blocks_count);
+}
+
/**
* nilfs_get_block() - get a file block on the filesystem (callback function)
* @inode - inode struct of the target file
struct inode *nilfs_new_inode(struct inode *dir, int mode)
{
struct super_block *sb = dir->i_sb;
- struct nilfs_sb_info *sbi = NILFS_SB(sb);
+ struct the_nilfs *nilfs = sb->s_fs_info;
struct inode *inode;
struct nilfs_inode_info *ii;
struct nilfs_root *root;
/* No lock is needed; iget() ensures it. */
}
- ii->i_flags = NILFS_I(dir)->i_flags;
- if (S_ISLNK(mode))
- ii->i_flags &= ~(NILFS_IMMUTABLE_FL | NILFS_APPEND_FL);
- if (!S_ISDIR(mode))
- ii->i_flags &= ~NILFS_DIRSYNC_FL;
+ ii->i_flags = nilfs_mask_flags(
+ mode, NILFS_I(dir)->i_flags & NILFS_FL_INHERITED);
/* ii->i_file_acl = 0; */
/* ii->i_dir_acl = 0; */
ii->i_dir_start_lookup = 0;
nilfs_set_inode_flags(inode);
- spin_lock(&sbi->s_next_gen_lock);
- inode->i_generation = sbi->s_next_generation++;
- spin_unlock(&sbi->s_next_gen_lock);
+ spin_lock(&nilfs->ns_next_gen_lock);
+ inode->i_generation = nilfs->ns_next_generation++;
+ spin_unlock(&nilfs->ns_next_gen_lock);
insert_inode_hash(inode);
err = nilfs_init_acl(inode, dir);
inode->i_flags &= ~(S_SYNC | S_APPEND | S_IMMUTABLE | S_NOATIME |
S_DIRSYNC);
- if (flags & NILFS_SYNC_FL)
+ if (flags & FS_SYNC_FL)
inode->i_flags |= S_SYNC;
- if (flags & NILFS_APPEND_FL)
+ if (flags & FS_APPEND_FL)
inode->i_flags |= S_APPEND;
- if (flags & NILFS_IMMUTABLE_FL)
+ if (flags & FS_IMMUTABLE_FL)
inode->i_flags |= S_IMMUTABLE;
-#ifndef NILFS_ATIME_DISABLE
- if (flags & NILFS_NOATIME_FL)
-#endif
+ if (flags & FS_NOATIME_FL)
inode->i_flags |= S_NOATIME;
- if (flags & NILFS_DIRSYNC_FL)
+ if (flags & FS_DIRSYNC_FL)
inode->i_flags |= S_DIRSYNC;
mapping_set_gfp_mask(inode->i_mapping,
mapping_gfp_mask(inode->i_mapping) & ~__GFP_FS);
struct nilfs_root *root, unsigned long ino,
struct inode *inode)
{
- struct the_nilfs *nilfs = NILFS_SB(sb)->s_nilfs;
+ struct the_nilfs *nilfs = sb->s_fs_info;
struct buffer_head *bh;
struct nilfs_inode *raw_inode;
int err;
struct nilfs_transaction_info ti;
struct super_block *sb = inode->i_sb;
struct nilfs_inode_info *ii = NILFS_I(inode);
+ int ret;
if (inode->i_nlink || !ii->i_root || unlikely(is_bad_inode(inode))) {
if (inode->i_data.nrpages)
nilfs_mark_inode_dirty(inode);
end_writeback(inode);
- nilfs_ifile_delete_inode(ii->i_root->ifile, inode->i_ino);
- atomic_dec(&ii->i_root->inodes_count);
+ ret = nilfs_ifile_delete_inode(ii->i_root->ifile, inode->i_ino);
+ if (!ret)
+ atomic_dec(&ii->i_root->inodes_count);
nilfs_clear_inode(inode);
int nilfs_load_inode_block(struct inode *inode, struct buffer_head **pbh)
{
- struct nilfs_sb_info *sbi = NILFS_SB(inode->i_sb);
+ struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
struct nilfs_inode_info *ii = NILFS_I(inode);
int err;
- spin_lock(&sbi->s_inode_lock);
+ spin_lock(&nilfs->ns_inode_lock);
if (ii->i_bh == NULL) {
- spin_unlock(&sbi->s_inode_lock);
+ spin_unlock(&nilfs->ns_inode_lock);
err = nilfs_ifile_get_inode_block(ii->i_root->ifile,
inode->i_ino, pbh);
if (unlikely(err))
return err;
- spin_lock(&sbi->s_inode_lock);
+ spin_lock(&nilfs->ns_inode_lock);
if (ii->i_bh == NULL)
ii->i_bh = *pbh;
else {
*pbh = ii->i_bh;
get_bh(*pbh);
- spin_unlock(&sbi->s_inode_lock);
+ spin_unlock(&nilfs->ns_inode_lock);
return 0;
}
int nilfs_inode_dirty(struct inode *inode)
{
struct nilfs_inode_info *ii = NILFS_I(inode);
- struct nilfs_sb_info *sbi = NILFS_SB(inode->i_sb);
+ struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
int ret = 0;
if (!list_empty(&ii->i_dirty)) {
- spin_lock(&sbi->s_inode_lock);
+ spin_lock(&nilfs->ns_inode_lock);
ret = test_bit(NILFS_I_DIRTY, &ii->i_state) ||
test_bit(NILFS_I_BUSY, &ii->i_state);
- spin_unlock(&sbi->s_inode_lock);
+ spin_unlock(&nilfs->ns_inode_lock);
}
return ret;
}
int nilfs_set_file_dirty(struct inode *inode, unsigned nr_dirty)
{
- struct nilfs_sb_info *sbi = NILFS_SB(inode->i_sb);
struct nilfs_inode_info *ii = NILFS_I(inode);
+ struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
- atomic_add(nr_dirty, &sbi->s_nilfs->ns_ndirtyblks);
+ atomic_add(nr_dirty, &nilfs->ns_ndirtyblks);
if (test_and_set_bit(NILFS_I_DIRTY, &ii->i_state))
return 0;
- spin_lock(&sbi->s_inode_lock);
+ spin_lock(&nilfs->ns_inode_lock);
if (!test_bit(NILFS_I_QUEUED, &ii->i_state) &&
!test_bit(NILFS_I_BUSY, &ii->i_state)) {
/* Because this routine may race with nilfs_dispose_list(),
if (list_empty(&ii->i_dirty) && igrab(inode) == NULL) {
/* This will happen when somebody is freeing
this inode. */
- nilfs_warning(sbi->s_super, __func__,
+ nilfs_warning(inode->i_sb, __func__,
"cannot get inode (ino=%lu)\n",
inode->i_ino);
- spin_unlock(&sbi->s_inode_lock);
+ spin_unlock(&nilfs->ns_inode_lock);
return -EINVAL; /* NILFS_I_DIRTY may remain for
freeing inode */
}
list_del(&ii->i_dirty);
- list_add_tail(&ii->i_dirty, &sbi->s_dirty_files);
+ list_add_tail(&ii->i_dirty, &nilfs->ns_dirty_files);
set_bit(NILFS_I_QUEUED, &ii->i_state);
}
- spin_unlock(&sbi->s_inode_lock);
+ spin_unlock(&nilfs->ns_inode_lock);
return 0;
}
#include <linux/capability.h> /* capable() */
#include <linux/uaccess.h> /* copy_from_user(), copy_to_user() */
#include <linux/vmalloc.h>
+#include <linux/compat.h> /* compat_ptr() */
#include <linux/mount.h> /* mnt_want_write(), mnt_drop_write() */
+#include <linux/buffer_head.h>
#include <linux/nilfs2_fs.h>
#include "nilfs.h"
#include "segment.h"
return ret;
}
+static int nilfs_ioctl_getflags(struct inode *inode, void __user *argp)
+{
+ unsigned int flags = NILFS_I(inode)->i_flags & FS_FL_USER_VISIBLE;
+
+ return put_user(flags, (int __user *)argp);
+}
+
+static int nilfs_ioctl_setflags(struct inode *inode, struct file *filp,
+ void __user *argp)
+{
+ struct nilfs_transaction_info ti;
+ unsigned int flags, oldflags;
+ int ret;
+
+ if (!is_owner_or_cap(inode))
+ return -EACCES;
+
+ if (get_user(flags, (int __user *)argp))
+ return -EFAULT;
+
+ ret = mnt_want_write(filp->f_path.mnt);
+ if (ret)
+ return ret;
+
+ flags = nilfs_mask_flags(inode->i_mode, flags);
+
+ mutex_lock(&inode->i_mutex);
+
+ oldflags = NILFS_I(inode)->i_flags;
+
+ /*
+ * The IMMUTABLE and APPEND_ONLY flags can only be changed by the
+ * relevant capability.
+ */
+ ret = -EPERM;
+ if (((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) &&
+ !capable(CAP_LINUX_IMMUTABLE))
+ goto out;
+
+ ret = nilfs_transaction_begin(inode->i_sb, &ti, 0);
+ if (ret)
+ goto out;
+
+ NILFS_I(inode)->i_flags = (oldflags & ~FS_FL_USER_MODIFIABLE) |
+ (flags & FS_FL_USER_MODIFIABLE);
+
+ nilfs_set_inode_flags(inode);
+ inode->i_ctime = CURRENT_TIME;
+ if (IS_SYNC(inode))
+ nilfs_set_transaction_flag(NILFS_TI_SYNC);
+
+ nilfs_mark_inode_dirty(inode);
+ ret = nilfs_transaction_commit(inode->i_sb);
+out:
+ mutex_unlock(&inode->i_mutex);
+ mnt_drop_write(filp->f_path.mnt);
+ return ret;
+}
+
+static int nilfs_ioctl_getversion(struct inode *inode, void __user *argp)
+{
+ return put_user(inode->i_generation, (int __user *)argp);
+}
+
static int nilfs_ioctl_change_cpmode(struct inode *inode, struct file *filp,
unsigned int cmd, void __user *argp)
{
- struct the_nilfs *nilfs = NILFS_SB(inode->i_sb)->s_nilfs;
- struct inode *cpfile = nilfs->ns_cpfile;
+ struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
struct nilfs_transaction_info ti;
struct nilfs_cpmode cpmode;
int ret;
nilfs_transaction_begin(inode->i_sb, &ti, 0);
ret = nilfs_cpfile_change_cpmode(
- cpfile, cpmode.cm_cno, cpmode.cm_mode);
+ nilfs->ns_cpfile, cpmode.cm_cno, cpmode.cm_mode);
if (unlikely(ret < 0))
nilfs_transaction_abort(inode->i_sb);
else
nilfs_ioctl_delete_checkpoint(struct inode *inode, struct file *filp,
unsigned int cmd, void __user *argp)
{
- struct inode *cpfile = NILFS_SB(inode->i_sb)->s_nilfs->ns_cpfile;
+ struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
struct nilfs_transaction_info ti;
__u64 cno;
int ret;
goto out;
nilfs_transaction_begin(inode->i_sb, &ti, 0);
- ret = nilfs_cpfile_delete_checkpoint(cpfile, cno);
+ ret = nilfs_cpfile_delete_checkpoint(nilfs->ns_cpfile, cno);
if (unlikely(ret < 0))
nilfs_transaction_abort(inode->i_sb);
else
static int nilfs_ioctl_get_cpstat(struct inode *inode, struct file *filp,
unsigned int cmd, void __user *argp)
{
- struct the_nilfs *nilfs = NILFS_SB(inode->i_sb)->s_nilfs;
+ struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
struct nilfs_cpstat cpstat;
int ret;
static int nilfs_ioctl_get_sustat(struct inode *inode, struct file *filp,
unsigned int cmd, void __user *argp)
{
- struct the_nilfs *nilfs = NILFS_SB(inode->i_sb)->s_nilfs;
+ struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
struct nilfs_sustat sustat;
int ret;
static int nilfs_ioctl_get_bdescs(struct inode *inode, struct file *filp,
unsigned int cmd, void __user *argp)
{
- struct the_nilfs *nilfs = NILFS_SB(inode->i_sb)->s_nilfs;
+ struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
struct nilfs_argv argv;
int ret;
struct nilfs_argv *argv, void *buf)
{
size_t nmembs = argv->v_nmembs;
- struct the_nilfs *nilfs = NILFS_SB(sb)->s_nilfs;
+ struct the_nilfs *nilfs = sb->s_fs_info;
struct inode *inode;
struct nilfs_vdesc *vdesc;
struct buffer_head *bh, *n;
ret = PTR_ERR(kbufs[4]);
goto out;
}
- nilfs = NILFS_SB(inode->i_sb)->s_nilfs;
+ nilfs = inode->i_sb->s_fs_info;
for (n = 0; n < 4; n++) {
ret = -EINVAL;
return ret;
if (argp != NULL) {
- nilfs = NILFS_SB(inode->i_sb)->s_nilfs;
+ nilfs = inode->i_sb->s_fs_info;
down_read(&nilfs->ns_segctor_sem);
cno = nilfs->ns_cno - 1;
up_read(&nilfs->ns_segctor_sem);
void *, size_t, size_t))
{
- struct the_nilfs *nilfs = NILFS_SB(inode->i_sb)->s_nilfs;
+ struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
struct nilfs_argv argv;
int ret;
void __user *argp = (void __user *)arg;
switch (cmd) {
+ case FS_IOC_GETFLAGS:
+ return nilfs_ioctl_getflags(inode, argp);
+ case FS_IOC_SETFLAGS:
+ return nilfs_ioctl_setflags(inode, filp, argp);
+ case FS_IOC_GETVERSION:
+ return nilfs_ioctl_getversion(inode, argp);
case NILFS_IOCTL_CHANGE_CPMODE:
return nilfs_ioctl_change_cpmode(inode, filp, cmd, argp);
case NILFS_IOCTL_DELETE_CHECKPOINT:
return -ENOTTY;
}
}
+
+#ifdef CONFIG_COMPAT
+long nilfs_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
+{
+ switch (cmd) {
+ case FS_IOC32_GETFLAGS:
+ cmd = FS_IOC_GETFLAGS;
+ break;
+ case FS_IOC32_SETFLAGS:
+ cmd = FS_IOC_SETFLAGS;
+ break;
+ case FS_IOC32_GETVERSION:
+ cmd = FS_IOC_GETVERSION;
+ break;
+ default:
+ return -ENOIOCTLCMD;
+ }
+ return nilfs_ioctl(filp, cmd, (unsigned long)compat_ptr(arg));
+}
+#endif
static inline struct the_nilfs *NILFS_I_NILFS(struct inode *inode)
{
- return NILFS_SB(inode->i_sb)->s_nilfs;
+ return inode->i_sb->s_fs_info;
}
/* Default GFP flags using highmem */
if (ino < NILFS_FIRST_INO(sb) && ino != NILFS_ROOT_INO)
return ERR_PTR(-ESTALE);
- root = nilfs_lookup_root(NILFS_SB(sb)->s_nilfs, cno);
+ root = nilfs_lookup_root(sb->s_fs_info, cno);
if (!root)
return ERR_PTR(-ESTALE);
#include <linux/blkdev.h>
#include <linux/nilfs2_fs.h>
#include "the_nilfs.h"
-#include "sb.h"
#include "bmap.h"
/*
#define NILFS_SYS_INO_BITS \
((unsigned int)(1 << NILFS_ROOT_INO) | NILFS_MDT_INO_BITS)
-#define NILFS_FIRST_INO(sb) (NILFS_SB(sb)->s_nilfs->ns_first_ino)
+#define NILFS_FIRST_INO(sb) (((struct the_nilfs *)sb->s_fs_info)->ns_first_ino)
#define NILFS_MDT_INODE(sb, ino) \
((ino) < NILFS_FIRST_INO(sb) && (NILFS_MDT_INO_BITS & (1 << (ino))))
#define NILFS_ATIME_DISABLE
+/* Flags that should be inherited by new inodes from their parent. */
+#define NILFS_FL_INHERITED \
+ (FS_SECRM_FL | FS_UNRM_FL | FS_COMPR_FL | FS_SYNC_FL | \
+ FS_IMMUTABLE_FL | FS_APPEND_FL | FS_NODUMP_FL | FS_NOATIME_FL |\
+ FS_COMPRBLK_FL | FS_NOCOMP_FL | FS_NOTAIL_FL | FS_DIRSYNC_FL)
+
+/* Mask out flags that are inappropriate for the given type of inode. */
+static inline __u32 nilfs_mask_flags(umode_t mode, __u32 flags)
+{
+ if (S_ISDIR(mode))
+ return flags;
+ else if (S_ISREG(mode))
+ return flags & ~(FS_DIRSYNC_FL | FS_TOPDIR_FL);
+ else
+ return flags & (FS_NODUMP_FL | FS_NOATIME_FL);
+}
+
/* dir.c */
extern int nilfs_add_link(struct dentry *, struct inode *);
extern ino_t nilfs_inode_by_name(struct inode *, const struct qstr *);
/* ioctl.c */
long nilfs_ioctl(struct file *, unsigned int, unsigned long);
+long nilfs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
int nilfs_ioctl_prepare_clean_segments(struct the_nilfs *, struct nilfs_argv *,
void **);
/* inode.c */
+void nilfs_inode_add_blocks(struct inode *inode, int n);
+void nilfs_inode_sub_blocks(struct inode *inode, int n);
extern struct inode *nilfs_new_inode(struct inode *, int);
extern void nilfs_free_inode(struct inode *);
extern int nilfs_get_block(struct inode *, sector_t, struct buffer_head *, int);
struct nilfs_super_block *);
extern void nilfs_set_log_cursor(struct nilfs_super_block *,
struct the_nilfs *);
-extern struct nilfs_super_block **nilfs_prepare_super(struct nilfs_sb_info *,
- int flip);
-extern int nilfs_commit_super(struct nilfs_sb_info *, int);
-extern int nilfs_cleanup_super(struct nilfs_sb_info *);
-int nilfs_attach_checkpoint(struct nilfs_sb_info *sbi, __u64 cno, int curr_mnt,
+struct nilfs_super_block **nilfs_prepare_super(struct super_block *sb,
+ int flip);
+int nilfs_commit_super(struct super_block *sb, int flag);
+int nilfs_cleanup_super(struct super_block *sb);
+int nilfs_attach_checkpoint(struct super_block *sb, __u64 cno, int curr_mnt,
struct nilfs_root **root);
int nilfs_checkpoint_is_mounted(struct super_block *sb, __u64 cno);
}
static int nilfs_prepare_segment_for_recovery(struct the_nilfs *nilfs,
- struct nilfs_sb_info *sbi,
+ struct super_block *sb,
struct nilfs_recovery_info *ri)
{
struct list_head *head = &ri->ri_used_segments;
}
static int nilfs_recover_dsync_blocks(struct the_nilfs *nilfs,
- struct nilfs_sb_info *sbi,
+ struct super_block *sb,
struct nilfs_root *root,
struct list_head *head,
unsigned long *nr_salvaged_blocks)
int err = 0, err2 = 0;
list_for_each_entry_safe(rb, n, head, list) {
- inode = nilfs_iget(sbi->s_super, root, rb->ino);
+ inode = nilfs_iget(sb, root, rb->ino);
if (IS_ERR(inode)) {
err = PTR_ERR(inode);
inode = NULL;
* nilfs_do_roll_forward - salvage logical segments newer than the latest
* checkpoint
* @nilfs: nilfs object
- * @sbi: nilfs_sb_info
+ * @sb: super block instance
* @ri: pointer to a nilfs_recovery_info
*/
static int nilfs_do_roll_forward(struct the_nilfs *nilfs,
- struct nilfs_sb_info *sbi,
+ struct super_block *sb,
struct nilfs_root *root,
struct nilfs_recovery_info *ri)
{
goto failed;
if (flags & NILFS_SS_LOGEND) {
err = nilfs_recover_dsync_blocks(
- nilfs, sbi, root, &dsync_blocks,
+ nilfs, sb, root, &dsync_blocks,
&nsalvaged_blocks);
if (unlikely(err))
goto failed;
if (nsalvaged_blocks) {
printk(KERN_INFO "NILFS (device %s): salvaged %lu blocks\n",
- sbi->s_super->s_id, nsalvaged_blocks);
+ sb->s_id, nsalvaged_blocks);
ri->ri_need_recovery = NILFS_RECOVERY_ROLLFORWARD_DONE;
}
out:
printk(KERN_ERR
"NILFS (device %s): Error roll-forwarding "
"(err=%d, pseg block=%llu). ",
- sbi->s_super->s_id, err, (unsigned long long)pseg_start);
+ sb->s_id, err, (unsigned long long)pseg_start);
goto out;
}
/**
* nilfs_salvage_orphan_logs - salvage logs written after the latest checkpoint
* @nilfs: nilfs object
- * @sbi: nilfs_sb_info
+ * @sb: super block instance
* @ri: pointer to a nilfs_recovery_info struct to store search results.
*
* Return Value: On success, 0 is returned. On error, one of the following
* %-ENOMEM - Insufficient memory available.
*/
int nilfs_salvage_orphan_logs(struct the_nilfs *nilfs,
- struct nilfs_sb_info *sbi,
+ struct super_block *sb,
struct nilfs_recovery_info *ri)
{
struct nilfs_root *root;
if (ri->ri_lsegs_start == 0 || ri->ri_lsegs_end == 0)
return 0;
- err = nilfs_attach_checkpoint(sbi, ri->ri_cno, true, &root);
+ err = nilfs_attach_checkpoint(sb, ri->ri_cno, true, &root);
if (unlikely(err)) {
printk(KERN_ERR
"NILFS: error loading the latest checkpoint.\n");
return err;
}
- err = nilfs_do_roll_forward(nilfs, sbi, root, ri);
+ err = nilfs_do_roll_forward(nilfs, sb, root, ri);
if (unlikely(err))
goto failed;
if (ri->ri_need_recovery == NILFS_RECOVERY_ROLLFORWARD_DONE) {
- err = nilfs_prepare_segment_for_recovery(nilfs, sbi, ri);
+ err = nilfs_prepare_segment_for_recovery(nilfs, sb, ri);
if (unlikely(err)) {
printk(KERN_ERR "NILFS: Error preparing segments for "
"recovery.\n");
goto failed;
}
- err = nilfs_attach_segment_constructor(sbi, root);
+ err = nilfs_attach_log_writer(sb, root);
if (unlikely(err))
goto failed;
set_nilfs_discontinued(nilfs);
- err = nilfs_construct_segment(sbi->s_super);
- nilfs_detach_segment_constructor(sbi);
+ err = nilfs_construct_segment(sb);
+ nilfs_detach_log_writer(sb);
if (unlikely(err)) {
printk(KERN_ERR "NILFS: Oops! recovery failed. "
+++ /dev/null
-/*
- * sb.h - NILFS on-memory super block structure.
- *
- * Copyright (C) 2005-2008 Nippon Telegraph and Telephone Corporation.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * Written by Ryusuke Konishi <ryusuke@osrg.net>
- *
- */
-
-#ifndef _NILFS_SB
-#define _NILFS_SB
-
-#include <linux/types.h>
-#include <linux/fs.h>
-
-struct the_nilfs;
-struct nilfs_sc_info;
-
-/*
- * NILFS super-block data in memory
- */
-struct nilfs_sb_info {
- /* Mount options */
- unsigned long s_mount_opt;
- uid_t s_resuid;
- gid_t s_resgid;
-
- unsigned long s_interval; /* construction interval */
- unsigned long s_watermark; /* threshold of data amount
- for the segment construction */
-
- /* Fundamental members */
- struct super_block *s_super; /* reverse pointer to super_block */
- struct the_nilfs *s_nilfs;
-
- /* Segment constructor */
- struct list_head s_dirty_files; /* dirty files list */
- struct nilfs_sc_info *s_sc_info; /* segment constructor info */
- spinlock_t s_inode_lock; /* Lock for the nilfs inode.
- It covers s_dirty_files list */
-
- /* Inode allocator */
- spinlock_t s_next_gen_lock;
- u32 s_next_generation;
-};
-
-static inline struct nilfs_sb_info *NILFS_SB(struct super_block *sb)
-{
- return sb->s_fs_info;
-}
-
-static inline struct nilfs_sc_info *NILFS_SC(struct nilfs_sb_info *sbi)
-{
- return sbi->s_sc_info;
-}
-
-/*
- * Bit operations for the mount option
- */
-#define nilfs_clear_opt(sbi, opt) \
- do { (sbi)->s_mount_opt &= ~NILFS_MOUNT_##opt; } while (0)
-#define nilfs_set_opt(sbi, opt) \
- do { (sbi)->s_mount_opt |= NILFS_MOUNT_##opt; } while (0)
-#define nilfs_test_opt(sbi, opt) ((sbi)->s_mount_opt & NILFS_MOUNT_##opt)
-#define nilfs_write_opt(sbi, mask, opt) \
- do { (sbi)->s_mount_opt = \
- (((sbi)->s_mount_opt & ~NILFS_MOUNT_##mask) | \
- NILFS_MOUNT_##opt); \
- } while (0)
-
-#endif /* _NILFS_SB */
static void nilfs_segctor_start_timer(struct nilfs_sc_info *);
static void nilfs_segctor_do_flush(struct nilfs_sc_info *, int);
static void nilfs_segctor_do_immediate_flush(struct nilfs_sc_info *);
-static void nilfs_dispose_list(struct nilfs_sb_info *, struct list_head *,
- int);
+static void nilfs_dispose_list(struct the_nilfs *, struct list_head *, int);
#define nilfs_cnt32_gt(a, b) \
(typecheck(__u32, a) && typecheck(__u32, b) && \
struct nilfs_transaction_info *ti,
int vacancy_check)
{
- struct nilfs_sb_info *sbi;
struct the_nilfs *nilfs;
int ret = nilfs_prepare_segment_lock(ti);
vfs_check_frozen(sb, SB_FREEZE_WRITE);
- sbi = NILFS_SB(sb);
- nilfs = sbi->s_nilfs;
+ nilfs = sb->s_fs_info;
down_read(&nilfs->ns_segctor_sem);
if (vacancy_check && nilfs_near_disk_full(nilfs)) {
up_read(&nilfs->ns_segctor_sem);
int nilfs_transaction_commit(struct super_block *sb)
{
struct nilfs_transaction_info *ti = current->journal_info;
- struct nilfs_sb_info *sbi;
- struct nilfs_sc_info *sci;
+ struct the_nilfs *nilfs = sb->s_fs_info;
int err = 0;
BUG_ON(ti == NULL || ti->ti_magic != NILFS_TI_MAGIC);
ti->ti_count--;
return 0;
}
- sbi = NILFS_SB(sb);
- sci = NILFS_SC(sbi);
- if (sci != NULL) {
+ if (nilfs->ns_writer) {
+ struct nilfs_sc_info *sci = nilfs->ns_writer;
+
if (ti->ti_flags & NILFS_TI_COMMIT)
nilfs_segctor_start_timer(sci);
- if (atomic_read(&sbi->s_nilfs->ns_ndirtyblks) >
- sci->sc_watermark)
+ if (atomic_read(&nilfs->ns_ndirtyblks) > sci->sc_watermark)
nilfs_segctor_do_flush(sci, 0);
}
- up_read(&sbi->s_nilfs->ns_segctor_sem);
+ up_read(&nilfs->ns_segctor_sem);
current->journal_info = ti->ti_save;
if (ti->ti_flags & NILFS_TI_SYNC)
void nilfs_transaction_abort(struct super_block *sb)
{
struct nilfs_transaction_info *ti = current->journal_info;
+ struct the_nilfs *nilfs = sb->s_fs_info;
BUG_ON(ti == NULL || ti->ti_magic != NILFS_TI_MAGIC);
if (ti->ti_count > 0) {
ti->ti_count--;
return;
}
- up_read(&NILFS_SB(sb)->s_nilfs->ns_segctor_sem);
+ up_read(&nilfs->ns_segctor_sem);
current->journal_info = ti->ti_save;
if (ti->ti_flags & NILFS_TI_DYNAMIC_ALLOC)
void nilfs_relax_pressure_in_lock(struct super_block *sb)
{
- struct nilfs_sb_info *sbi = NILFS_SB(sb);
- struct nilfs_sc_info *sci = NILFS_SC(sbi);
- struct the_nilfs *nilfs = sbi->s_nilfs;
+ struct the_nilfs *nilfs = sb->s_fs_info;
+ struct nilfs_sc_info *sci = nilfs->ns_writer;
if (!sci || !sci->sc_flush_request)
return;
downgrade_write(&nilfs->ns_segctor_sem);
}
-static void nilfs_transaction_lock(struct nilfs_sb_info *sbi,
+static void nilfs_transaction_lock(struct super_block *sb,
struct nilfs_transaction_info *ti,
int gcflag)
{
struct nilfs_transaction_info *cur_ti = current->journal_info;
+ struct the_nilfs *nilfs = sb->s_fs_info;
+ struct nilfs_sc_info *sci = nilfs->ns_writer;
WARN_ON(cur_ti);
ti->ti_flags = NILFS_TI_WRITER;
current->journal_info = ti;
for (;;) {
- down_write(&sbi->s_nilfs->ns_segctor_sem);
- if (!test_bit(NILFS_SC_PRIOR_FLUSH, &NILFS_SC(sbi)->sc_flags))
+ down_write(&nilfs->ns_segctor_sem);
+ if (!test_bit(NILFS_SC_PRIOR_FLUSH, &sci->sc_flags))
break;
- nilfs_segctor_do_immediate_flush(NILFS_SC(sbi));
+ nilfs_segctor_do_immediate_flush(sci);
- up_write(&sbi->s_nilfs->ns_segctor_sem);
+ up_write(&nilfs->ns_segctor_sem);
yield();
}
if (gcflag)
ti->ti_flags |= NILFS_TI_GC;
}
-static void nilfs_transaction_unlock(struct nilfs_sb_info *sbi)
+static void nilfs_transaction_unlock(struct super_block *sb)
{
struct nilfs_transaction_info *ti = current->journal_info;
+ struct the_nilfs *nilfs = sb->s_fs_info;
BUG_ON(ti == NULL || ti->ti_magic != NILFS_TI_MAGIC);
BUG_ON(ti->ti_count > 0);
- up_write(&sbi->s_nilfs->ns_segctor_sem);
+ up_write(&nilfs->ns_segctor_sem);
current->journal_info = ti->ti_save;
if (!list_empty(&ti->ti_garbage))
- nilfs_dispose_list(sbi, &ti->ti_garbage, 0);
+ nilfs_dispose_list(nilfs, &ti->ti_garbage, 0);
}
static void *nilfs_segctor_map_segsum_entry(struct nilfs_sc_info *sci,
}
}
-static void nilfs_dispose_list(struct nilfs_sb_info *sbi,
+static void nilfs_dispose_list(struct the_nilfs *nilfs,
struct list_head *head, int force)
{
struct nilfs_inode_info *ii, *n;
unsigned nv = 0;
while (!list_empty(head)) {
- spin_lock(&sbi->s_inode_lock);
+ spin_lock(&nilfs->ns_inode_lock);
list_for_each_entry_safe(ii, n, head, i_dirty) {
list_del_init(&ii->i_dirty);
if (force) {
} else if (test_bit(NILFS_I_DIRTY, &ii->i_state)) {
set_bit(NILFS_I_QUEUED, &ii->i_state);
list_add_tail(&ii->i_dirty,
- &sbi->s_dirty_files);
+ &nilfs->ns_dirty_files);
continue;
}
ivec[nv++] = ii;
if (nv == SC_N_INODEVEC)
break;
}
- spin_unlock(&sbi->s_inode_lock);
+ spin_unlock(&nilfs->ns_inode_lock);
for (pii = ivec; nv > 0; pii++, nv--)
iput(&(*pii)->vfs_inode);
static int nilfs_segctor_confirm(struct nilfs_sc_info *sci)
{
- struct nilfs_sb_info *sbi = sci->sc_sbi;
+ struct the_nilfs *nilfs = sci->sc_super->s_fs_info;
int ret = 0;
- if (nilfs_test_metadata_dirty(sbi->s_nilfs, sci->sc_root))
+ if (nilfs_test_metadata_dirty(nilfs, sci->sc_root))
set_bit(NILFS_SC_DIRTY, &sci->sc_flags);
- spin_lock(&sbi->s_inode_lock);
- if (list_empty(&sbi->s_dirty_files) && nilfs_segctor_clean(sci))
+ spin_lock(&nilfs->ns_inode_lock);
+ if (list_empty(&nilfs->ns_dirty_files) && nilfs_segctor_clean(sci))
ret++;
- spin_unlock(&sbi->s_inode_lock);
+ spin_unlock(&nilfs->ns_inode_lock);
return ret;
}
static void nilfs_segctor_clear_metadata_dirty(struct nilfs_sc_info *sci)
{
- struct nilfs_sb_info *sbi = sci->sc_sbi;
- struct the_nilfs *nilfs = sbi->s_nilfs;
+ struct the_nilfs *nilfs = sci->sc_super->s_fs_info;
nilfs_mdt_clear_dirty(sci->sc_root->ifile);
nilfs_mdt_clear_dirty(nilfs->ns_cpfile);
static int nilfs_segctor_create_checkpoint(struct nilfs_sc_info *sci)
{
- struct the_nilfs *nilfs = sci->sc_sbi->s_nilfs;
+ struct the_nilfs *nilfs = sci->sc_super->s_fs_info;
struct buffer_head *bh_cp;
struct nilfs_checkpoint *raw_cp;
int err;
static int nilfs_segctor_fill_in_checkpoint(struct nilfs_sc_info *sci)
{
- struct nilfs_sb_info *sbi = sci->sc_sbi;
- struct the_nilfs *nilfs = sbi->s_nilfs;
+ struct the_nilfs *nilfs = sci->sc_super->s_fs_info;
struct buffer_head *bh_cp;
struct nilfs_checkpoint *raw_cp;
int err;
static int nilfs_segctor_collect_blocks(struct nilfs_sc_info *sci, int mode)
{
- struct nilfs_sb_info *sbi = sci->sc_sbi;
- struct the_nilfs *nilfs = sbi->s_nilfs;
+ struct the_nilfs *nilfs = sci->sc_super->s_fs_info;
struct list_head *head;
struct nilfs_inode_info *ii;
size_t ndone;
{
struct nilfs_segment_buffer *segbuf;
struct page *bd_page = NULL, *fs_page = NULL;
- struct the_nilfs *nilfs = sci->sc_sbi->s_nilfs;
+ struct the_nilfs *nilfs = sci->sc_super->s_fs_info;
int update_sr = false;
list_for_each_entry(segbuf, &sci->sc_write_logs, sb_list) {
return ret;
}
-static int nilfs_segctor_check_in_files(struct nilfs_sc_info *sci,
- struct nilfs_sb_info *sbi)
+static int nilfs_segctor_collect_dirty_files(struct nilfs_sc_info *sci,
+ struct the_nilfs *nilfs)
{
struct nilfs_inode_info *ii, *n;
struct inode *ifile = sci->sc_root->ifile;
- spin_lock(&sbi->s_inode_lock);
+ spin_lock(&nilfs->ns_inode_lock);
retry:
- list_for_each_entry_safe(ii, n, &sbi->s_dirty_files, i_dirty) {
+ list_for_each_entry_safe(ii, n, &nilfs->ns_dirty_files, i_dirty) {
if (!ii->i_bh) {
struct buffer_head *ibh;
int err;
- spin_unlock(&sbi->s_inode_lock);
+ spin_unlock(&nilfs->ns_inode_lock);
err = nilfs_ifile_get_inode_block(
ifile, ii->vfs_inode.i_ino, &ibh);
if (unlikely(err)) {
- nilfs_warning(sbi->s_super, __func__,
+ nilfs_warning(sci->sc_super, __func__,
"failed to get inode block.\n");
return err;
}
nilfs_mdt_mark_buffer_dirty(ibh);
nilfs_mdt_mark_dirty(ifile);
- spin_lock(&sbi->s_inode_lock);
+ spin_lock(&nilfs->ns_inode_lock);
if (likely(!ii->i_bh))
ii->i_bh = ibh;
else
list_del(&ii->i_dirty);
list_add_tail(&ii->i_dirty, &sci->sc_dirty_files);
}
- spin_unlock(&sbi->s_inode_lock);
+ spin_unlock(&nilfs->ns_inode_lock);
return 0;
}
-static void nilfs_segctor_check_out_files(struct nilfs_sc_info *sci,
- struct nilfs_sb_info *sbi)
+static void nilfs_segctor_drop_written_files(struct nilfs_sc_info *sci,
+ struct the_nilfs *nilfs)
{
struct nilfs_transaction_info *ti = current->journal_info;
struct nilfs_inode_info *ii, *n;
- spin_lock(&sbi->s_inode_lock);
+ spin_lock(&nilfs->ns_inode_lock);
list_for_each_entry_safe(ii, n, &sci->sc_dirty_files, i_dirty) {
if (!test_and_clear_bit(NILFS_I_UPDATED, &ii->i_state) ||
test_bit(NILFS_I_DIRTY, &ii->i_state))
list_del(&ii->i_dirty);
list_add_tail(&ii->i_dirty, &ti->ti_garbage);
}
- spin_unlock(&sbi->s_inode_lock);
+ spin_unlock(&nilfs->ns_inode_lock);
}
/*
*/
static int nilfs_segctor_do_construct(struct nilfs_sc_info *sci, int mode)
{
- struct nilfs_sb_info *sbi = sci->sc_sbi;
- struct the_nilfs *nilfs = sbi->s_nilfs;
+ struct the_nilfs *nilfs = sci->sc_super->s_fs_info;
struct page *failed_page;
int err;
sci->sc_stage.scnt = NILFS_ST_INIT;
sci->sc_cno = nilfs->ns_cno;
- err = nilfs_segctor_check_in_files(sci, sbi);
+ err = nilfs_segctor_collect_dirty_files(sci, nilfs);
if (unlikely(err))
goto out;
} while (sci->sc_stage.scnt != NILFS_ST_DONE);
out:
- nilfs_segctor_check_out_files(sci, sbi);
+ nilfs_segctor_drop_written_files(sci, nilfs);
return err;
failed_to_write:
*/
void nilfs_flush_segment(struct super_block *sb, ino_t ino)
{
- struct nilfs_sb_info *sbi = NILFS_SB(sb);
- struct nilfs_sc_info *sci = NILFS_SC(sbi);
+ struct the_nilfs *nilfs = sb->s_fs_info;
+ struct nilfs_sc_info *sci = nilfs->ns_writer;
if (!sci || nilfs_doing_construction())
return;
*/
int nilfs_construct_segment(struct super_block *sb)
{
- struct nilfs_sb_info *sbi = NILFS_SB(sb);
- struct nilfs_sc_info *sci = NILFS_SC(sbi);
+ struct the_nilfs *nilfs = sb->s_fs_info;
+ struct nilfs_sc_info *sci = nilfs->ns_writer;
struct nilfs_transaction_info *ti;
int err;
int nilfs_construct_dsync_segment(struct super_block *sb, struct inode *inode,
loff_t start, loff_t end)
{
- struct nilfs_sb_info *sbi = NILFS_SB(sb);
- struct nilfs_sc_info *sci = NILFS_SC(sbi);
+ struct the_nilfs *nilfs = sb->s_fs_info;
+ struct nilfs_sc_info *sci = nilfs->ns_writer;
struct nilfs_inode_info *ii;
struct nilfs_transaction_info ti;
int err = 0;
if (!sci)
return -EROFS;
- nilfs_transaction_lock(sbi, &ti, 0);
+ nilfs_transaction_lock(sb, &ti, 0);
ii = NILFS_I(inode);
if (test_bit(NILFS_I_INODE_DIRTY, &ii->i_state) ||
- nilfs_test_opt(sbi, STRICT_ORDER) ||
+ nilfs_test_opt(nilfs, STRICT_ORDER) ||
test_bit(NILFS_SC_UNCLOSED, &sci->sc_flags) ||
- nilfs_discontinued(sbi->s_nilfs)) {
- nilfs_transaction_unlock(sbi);
+ nilfs_discontinued(nilfs)) {
+ nilfs_transaction_unlock(sb);
err = nilfs_segctor_sync(sci);
return err;
}
- spin_lock(&sbi->s_inode_lock);
+ spin_lock(&nilfs->ns_inode_lock);
if (!test_bit(NILFS_I_QUEUED, &ii->i_state) &&
!test_bit(NILFS_I_BUSY, &ii->i_state)) {
- spin_unlock(&sbi->s_inode_lock);
- nilfs_transaction_unlock(sbi);
+ spin_unlock(&nilfs->ns_inode_lock);
+ nilfs_transaction_unlock(sb);
return 0;
}
- spin_unlock(&sbi->s_inode_lock);
+ spin_unlock(&nilfs->ns_inode_lock);
sci->sc_dsync_inode = ii;
sci->sc_dsync_start = start;
sci->sc_dsync_end = end;
err = nilfs_segctor_do_construct(sci, SC_LSEG_DSYNC);
- nilfs_transaction_unlock(sbi);
+ nilfs_transaction_unlock(sb);
return err;
}
*/
static int nilfs_segctor_construct(struct nilfs_sc_info *sci, int mode)
{
- struct nilfs_sb_info *sbi = sci->sc_sbi;
- struct the_nilfs *nilfs = sbi->s_nilfs;
+ struct the_nilfs *nilfs = sci->sc_super->s_fs_info;
struct nilfs_super_block **sbp;
int err = 0;
nilfs_discontinued(nilfs)) {
down_write(&nilfs->ns_sem);
err = -EIO;
- sbp = nilfs_prepare_super(sbi,
+ sbp = nilfs_prepare_super(sci->sc_super,
nilfs_sb_will_flip(nilfs));
if (likely(sbp)) {
nilfs_set_log_cursor(sbp[0], nilfs);
- err = nilfs_commit_super(sbi, NILFS_SB_COMMIT);
+ err = nilfs_commit_super(sci->sc_super,
+ NILFS_SB_COMMIT);
}
up_write(&nilfs->ns_sem);
}
int nilfs_clean_segments(struct super_block *sb, struct nilfs_argv *argv,
void **kbufs)
{
- struct nilfs_sb_info *sbi = NILFS_SB(sb);
- struct nilfs_sc_info *sci = NILFS_SC(sbi);
- struct the_nilfs *nilfs = sbi->s_nilfs;
+ struct the_nilfs *nilfs = sb->s_fs_info;
+ struct nilfs_sc_info *sci = nilfs->ns_writer;
struct nilfs_transaction_info ti;
int err;
if (unlikely(!sci))
return -EROFS;
- nilfs_transaction_lock(sbi, &ti, 1);
+ nilfs_transaction_lock(sb, &ti, 1);
err = nilfs_mdt_save_to_shadow_map(nilfs->ns_dat);
if (unlikely(err))
set_current_state(TASK_INTERRUPTIBLE);
schedule_timeout(sci->sc_interval);
}
- if (nilfs_test_opt(sbi, DISCARD)) {
+ if (nilfs_test_opt(nilfs, DISCARD)) {
int ret = nilfs_discard_segments(nilfs, sci->sc_freesegs,
sci->sc_nfreesegs);
if (ret) {
printk(KERN_WARNING
"NILFS warning: error %d on discard request, "
"turning discards off for the device\n", ret);
- nilfs_clear_opt(sbi, DISCARD);
+ nilfs_clear_opt(nilfs, DISCARD);
}
}
sci->sc_freesegs = NULL;
sci->sc_nfreesegs = 0;
nilfs_mdt_clear_shadow_map(nilfs->ns_dat);
- nilfs_transaction_unlock(sbi);
+ nilfs_transaction_unlock(sb);
return err;
}
static void nilfs_segctor_thread_construct(struct nilfs_sc_info *sci, int mode)
{
- struct nilfs_sb_info *sbi = sci->sc_sbi;
struct nilfs_transaction_info ti;
- nilfs_transaction_lock(sbi, &ti, 0);
+ nilfs_transaction_lock(sci->sc_super, &ti, 0);
nilfs_segctor_construct(sci, mode);
/*
if (test_bit(NILFS_SC_UNCLOSED, &sci->sc_flags))
nilfs_segctor_start_timer(sci);
- nilfs_transaction_unlock(sbi);
+ nilfs_transaction_unlock(sci->sc_super);
}
static void nilfs_segctor_do_immediate_flush(struct nilfs_sc_info *sci)
static int nilfs_segctor_thread(void *arg)
{
struct nilfs_sc_info *sci = (struct nilfs_sc_info *)arg;
- struct the_nilfs *nilfs = sci->sc_sbi->s_nilfs;
+ struct the_nilfs *nilfs = sci->sc_super->s_fs_info;
int timeout = 0;
sci->sc_timer.data = (unsigned long)current;
/*
* Setup & clean-up functions
*/
-static struct nilfs_sc_info *nilfs_segctor_new(struct nilfs_sb_info *sbi,
+static struct nilfs_sc_info *nilfs_segctor_new(struct super_block *sb,
struct nilfs_root *root)
{
+ struct the_nilfs *nilfs = sb->s_fs_info;
struct nilfs_sc_info *sci;
sci = kzalloc(sizeof(*sci), GFP_KERNEL);
if (!sci)
return NULL;
- sci->sc_sbi = sbi;
- sci->sc_super = sbi->s_super;
+ sci->sc_super = sb;
nilfs_get_root(root);
sci->sc_root = root;
sci->sc_mjcp_freq = HZ * NILFS_SC_DEFAULT_SR_FREQ;
sci->sc_watermark = NILFS_SC_DEFAULT_WATERMARK;
- if (sbi->s_interval)
- sci->sc_interval = sbi->s_interval;
- if (sbi->s_watermark)
- sci->sc_watermark = sbi->s_watermark;
+ if (nilfs->ns_interval)
+ sci->sc_interval = nilfs->ns_interval;
+ if (nilfs->ns_watermark)
+ sci->sc_watermark = nilfs->ns_watermark;
return sci;
}
/* The segctord thread was stopped and its timer was removed.
But some tasks remain. */
do {
- struct nilfs_sb_info *sbi = sci->sc_sbi;
struct nilfs_transaction_info ti;
- nilfs_transaction_lock(sbi, &ti, 0);
+ nilfs_transaction_lock(sci->sc_super, &ti, 0);
ret = nilfs_segctor_construct(sci, SC_LSEG_SR);
- nilfs_transaction_unlock(sbi);
+ nilfs_transaction_unlock(sci->sc_super);
} while (ret && retrycount-- > 0);
}
*/
static void nilfs_segctor_destroy(struct nilfs_sc_info *sci)
{
- struct nilfs_sb_info *sbi = sci->sc_sbi;
+ struct the_nilfs *nilfs = sci->sc_super->s_fs_info;
int flag;
- up_write(&sbi->s_nilfs->ns_segctor_sem);
+ up_write(&nilfs->ns_segctor_sem);
spin_lock(&sci->sc_state_lock);
nilfs_segctor_kill_thread(sci);
WARN_ON(!list_empty(&sci->sc_copied_buffers));
if (!list_empty(&sci->sc_dirty_files)) {
- nilfs_warning(sbi->s_super, __func__,
+ nilfs_warning(sci->sc_super, __func__,
"dirty file(s) after the final construction\n");
- nilfs_dispose_list(sbi, &sci->sc_dirty_files, 1);
+ nilfs_dispose_list(nilfs, &sci->sc_dirty_files, 1);
}
WARN_ON(!list_empty(&sci->sc_segbufs));
nilfs_put_root(sci->sc_root);
- down_write(&sbi->s_nilfs->ns_segctor_sem);
+ down_write(&nilfs->ns_segctor_sem);
del_timer_sync(&sci->sc_timer);
kfree(sci);
}
/**
- * nilfs_attach_segment_constructor - attach a segment constructor
- * @sbi: nilfs_sb_info
+ * nilfs_attach_log_writer - attach log writer
+ * @sb: super block instance
* @root: root object of the current filesystem tree
*
- * nilfs_attach_segment_constructor() allocates a struct nilfs_sc_info,
- * initializes it, and starts the segment constructor.
+ * This allocates a log writer object, initializes it, and starts the
+ * log writer.
*
* Return Value: On success, 0 is returned. On error, one of the following
* negative error code is returned.
*
* %-ENOMEM - Insufficient memory available.
*/
-int nilfs_attach_segment_constructor(struct nilfs_sb_info *sbi,
- struct nilfs_root *root)
+int nilfs_attach_log_writer(struct super_block *sb, struct nilfs_root *root)
{
+ struct the_nilfs *nilfs = sb->s_fs_info;
int err;
- if (NILFS_SC(sbi)) {
+ if (nilfs->ns_writer) {
/*
* This happens if the filesystem was remounted
* read/write after nilfs_error degenerated it into a
* read-only mount.
*/
- nilfs_detach_segment_constructor(sbi);
+ nilfs_detach_log_writer(sb);
}
- sbi->s_sc_info = nilfs_segctor_new(sbi, root);
- if (!sbi->s_sc_info)
+ nilfs->ns_writer = nilfs_segctor_new(sb, root);
+ if (!nilfs->ns_writer)
return -ENOMEM;
- err = nilfs_segctor_start_thread(NILFS_SC(sbi));
+ err = nilfs_segctor_start_thread(nilfs->ns_writer);
if (err) {
- kfree(sbi->s_sc_info);
- sbi->s_sc_info = NULL;
+ kfree(nilfs->ns_writer);
+ nilfs->ns_writer = NULL;
}
return err;
}
/**
- * nilfs_detach_segment_constructor - destroy the segment constructor
- * @sbi: nilfs_sb_info
+ * nilfs_detach_log_writer - destroy log writer
+ * @sb: super block instance
*
- * nilfs_detach_segment_constructor() kills the segment constructor daemon,
- * frees the struct nilfs_sc_info, and destroy the dirty file list.
+ * This kills log writer daemon, frees the log writer object, and
+ * destroys list of dirty files.
*/
-void nilfs_detach_segment_constructor(struct nilfs_sb_info *sbi)
+void nilfs_detach_log_writer(struct super_block *sb)
{
- struct the_nilfs *nilfs = sbi->s_nilfs;
+ struct the_nilfs *nilfs = sb->s_fs_info;
LIST_HEAD(garbage_list);
down_write(&nilfs->ns_segctor_sem);
- if (NILFS_SC(sbi)) {
- nilfs_segctor_destroy(NILFS_SC(sbi));
- sbi->s_sc_info = NULL;
+ if (nilfs->ns_writer) {
+ nilfs_segctor_destroy(nilfs->ns_writer);
+ nilfs->ns_writer = NULL;
}
/* Force to free the list of dirty files */
- spin_lock(&sbi->s_inode_lock);
- if (!list_empty(&sbi->s_dirty_files)) {
- list_splice_init(&sbi->s_dirty_files, &garbage_list);
- nilfs_warning(sbi->s_super, __func__,
- "Non empty dirty list after the last "
- "segment construction\n");
- }
- spin_unlock(&sbi->s_inode_lock);
+ spin_lock(&nilfs->ns_inode_lock);
+ if (!list_empty(&nilfs->ns_dirty_files)) {
+ list_splice_init(&nilfs->ns_dirty_files, &garbage_list);
+ nilfs_warning(sb, __func__,
+ "Hit dirty file after stopped log writer\n");
+ }
+ spin_unlock(&nilfs->ns_inode_lock);
up_write(&nilfs->ns_segctor_sem);
- nilfs_dispose_list(sbi, &garbage_list, 1);
+ nilfs_dispose_list(nilfs, &garbage_list, 1);
}
#include <linux/fs.h>
#include <linux/buffer_head.h>
#include <linux/nilfs2_fs.h>
-#include "sb.h"
+#include "nilfs.h"
struct nilfs_root;
/**
* struct nilfs_sc_info - Segment constructor information
* @sc_super: Back pointer to super_block struct
- * @sc_sbi: Back pointer to nilfs_sb_info struct
* @sc_root: root object of the current filesystem tree
* @sc_nblk_inc: Block count of current generation
* @sc_dirty_files: List of files to be written
*/
struct nilfs_sc_info {
struct super_block *sc_super;
- struct nilfs_sb_info *sc_sbi;
struct nilfs_root *sc_root;
unsigned long sc_nblk_inc;
extern int nilfs_clean_segments(struct super_block *, struct nilfs_argv *,
void **);
-int nilfs_attach_segment_constructor(struct nilfs_sb_info *sbi,
- struct nilfs_root *root);
-extern void nilfs_detach_segment_constructor(struct nilfs_sb_info *);
+int nilfs_attach_log_writer(struct super_block *sb, struct nilfs_root *root);
+void nilfs_detach_log_writer(struct super_block *sb);
/* recovery.c */
extern int nilfs_read_super_root_block(struct the_nilfs *, sector_t,
struct buffer_head **, int);
extern int nilfs_search_super_root(struct the_nilfs *,
struct nilfs_recovery_info *);
-extern int nilfs_salvage_orphan_logs(struct the_nilfs *,
- struct nilfs_sb_info *,
- struct nilfs_recovery_info *);
+int nilfs_salvage_orphan_logs(struct the_nilfs *nilfs, struct super_block *sb,
+ struct nilfs_recovery_info *ri);
extern void nilfs_dispose_segment_list(struct list_head *);
#endif /* _NILFS_SEGMENT_H */
#include <linux/init.h>
#include <linux/blkdev.h>
#include <linux/parser.h>
-#include <linux/random.h>
#include <linux/crc32.h>
#include <linux/vfs.h>
#include <linux/writeback.h>
struct kmem_cache *nilfs_segbuf_cachep;
struct kmem_cache *nilfs_btree_path_cache;
-static int nilfs_setup_super(struct nilfs_sb_info *sbi, int is_mount);
+static int nilfs_setup_super(struct super_block *sb, int is_mount);
static int nilfs_remount(struct super_block *sb, int *flags, char *data);
-static void nilfs_set_error(struct nilfs_sb_info *sbi)
+static void nilfs_set_error(struct super_block *sb)
{
- struct the_nilfs *nilfs = sbi->s_nilfs;
+ struct the_nilfs *nilfs = sb->s_fs_info;
struct nilfs_super_block **sbp;
down_write(&nilfs->ns_sem);
if (!(nilfs->ns_mount_state & NILFS_ERROR_FS)) {
nilfs->ns_mount_state |= NILFS_ERROR_FS;
- sbp = nilfs_prepare_super(sbi, 0);
+ sbp = nilfs_prepare_super(sb, 0);
if (likely(sbp)) {
sbp[0]->s_state |= cpu_to_le16(NILFS_ERROR_FS);
if (sbp[1])
sbp[1]->s_state |= cpu_to_le16(NILFS_ERROR_FS);
- nilfs_commit_super(sbi, NILFS_SB_COMMIT_ALL);
+ nilfs_commit_super(sb, NILFS_SB_COMMIT_ALL);
}
}
up_write(&nilfs->ns_sem);
void nilfs_error(struct super_block *sb, const char *function,
const char *fmt, ...)
{
- struct nilfs_sb_info *sbi = NILFS_SB(sb);
+ struct the_nilfs *nilfs = sb->s_fs_info;
struct va_format vaf;
va_list args;
va_end(args);
if (!(sb->s_flags & MS_RDONLY)) {
- nilfs_set_error(sbi);
+ nilfs_set_error(sb);
- if (nilfs_test_opt(sbi, ERRORS_RO)) {
+ if (nilfs_test_opt(nilfs, ERRORS_RO)) {
printk(KERN_CRIT "Remounting filesystem read-only\n");
sb->s_flags |= MS_RDONLY;
}
}
- if (nilfs_test_opt(sbi, ERRORS_PANIC))
+ if (nilfs_test_opt(nilfs, ERRORS_PANIC))
panic("NILFS (device %s): panic forced after error\n",
sb->s_id);
}
call_rcu(&inode->i_rcu, nilfs_i_callback);
}
-static int nilfs_sync_super(struct nilfs_sb_info *sbi, int flag)
+static int nilfs_sync_super(struct super_block *sb, int flag)
{
- struct the_nilfs *nilfs = sbi->s_nilfs;
+ struct the_nilfs *nilfs = sb->s_fs_info;
int err;
retry:
set_buffer_dirty(nilfs->ns_sbh[0]);
- if (nilfs_test_opt(sbi, BARRIER)) {
+ if (nilfs_test_opt(nilfs, BARRIER)) {
err = __sync_dirty_buffer(nilfs->ns_sbh[0],
WRITE_SYNC | WRITE_FLUSH_FUA);
} else {
spin_unlock(&nilfs->ns_last_segment_lock);
}
-struct nilfs_super_block **nilfs_prepare_super(struct nilfs_sb_info *sbi,
+struct nilfs_super_block **nilfs_prepare_super(struct super_block *sb,
int flip)
{
- struct the_nilfs *nilfs = sbi->s_nilfs;
+ struct the_nilfs *nilfs = sb->s_fs_info;
struct nilfs_super_block **sbp = nilfs->ns_sbp;
/* nilfs->ns_sem must be locked by the caller. */
memcpy(sbp[0], sbp[1], nilfs->ns_sbsize);
} else {
printk(KERN_CRIT "NILFS: superblock broke on dev %s\n",
- sbi->s_super->s_id);
+ sb->s_id);
return NULL;
}
} else if (sbp[1] &&
return sbp;
}
-int nilfs_commit_super(struct nilfs_sb_info *sbi, int flag)
+int nilfs_commit_super(struct super_block *sb, int flag)
{
- struct the_nilfs *nilfs = sbi->s_nilfs;
+ struct the_nilfs *nilfs = sb->s_fs_info;
struct nilfs_super_block **sbp = nilfs->ns_sbp;
time_t t;
nilfs->ns_sbsize));
}
clear_nilfs_sb_dirty(nilfs);
- return nilfs_sync_super(sbi, flag);
+ return nilfs_sync_super(sb, flag);
}
/**
* nilfs_cleanup_super() - write filesystem state for cleanup
- * @sbi: nilfs_sb_info to be unmounted or degraded to read-only
+ * @sb: super block instance to be unmounted or degraded to read-only
*
* This function restores state flags in the on-disk super block.
* This will set "clean" flag (i.e. NILFS_VALID_FS) unless the
* filesystem was not clean previously.
*/
-int nilfs_cleanup_super(struct nilfs_sb_info *sbi)
+int nilfs_cleanup_super(struct super_block *sb)
{
+ struct the_nilfs *nilfs = sb->s_fs_info;
struct nilfs_super_block **sbp;
int flag = NILFS_SB_COMMIT;
int ret = -EIO;
- sbp = nilfs_prepare_super(sbi, 0);
+ sbp = nilfs_prepare_super(sb, 0);
if (sbp) {
- sbp[0]->s_state = cpu_to_le16(sbi->s_nilfs->ns_mount_state);
- nilfs_set_log_cursor(sbp[0], sbi->s_nilfs);
+ sbp[0]->s_state = cpu_to_le16(nilfs->ns_mount_state);
+ nilfs_set_log_cursor(sbp[0], nilfs);
if (sbp[1] && sbp[0]->s_last_cno == sbp[1]->s_last_cno) {
/*
* make the "clean" flag also to the opposite
sbp[1]->s_state = sbp[0]->s_state;
flag = NILFS_SB_COMMIT_ALL;
}
- ret = nilfs_commit_super(sbi, flag);
+ ret = nilfs_commit_super(sb, flag);
}
return ret;
}
static void nilfs_put_super(struct super_block *sb)
{
- struct nilfs_sb_info *sbi = NILFS_SB(sb);
- struct the_nilfs *nilfs = sbi->s_nilfs;
+ struct the_nilfs *nilfs = sb->s_fs_info;
- nilfs_detach_segment_constructor(sbi);
+ nilfs_detach_log_writer(sb);
if (!(sb->s_flags & MS_RDONLY)) {
down_write(&nilfs->ns_sem);
- nilfs_cleanup_super(sbi);
+ nilfs_cleanup_super(sb);
up_write(&nilfs->ns_sem);
}
iput(nilfs->ns_dat);
destroy_nilfs(nilfs);
- sbi->s_super = NULL;
sb->s_fs_info = NULL;
- kfree(sbi);
}
static int nilfs_sync_fs(struct super_block *sb, int wait)
{
- struct nilfs_sb_info *sbi = NILFS_SB(sb);
- struct the_nilfs *nilfs = sbi->s_nilfs;
+ struct the_nilfs *nilfs = sb->s_fs_info;
struct nilfs_super_block **sbp;
int err = 0;
down_write(&nilfs->ns_sem);
if (nilfs_sb_dirty(nilfs)) {
- sbp = nilfs_prepare_super(sbi, nilfs_sb_will_flip(nilfs));
+ sbp = nilfs_prepare_super(sb, nilfs_sb_will_flip(nilfs));
if (likely(sbp)) {
nilfs_set_log_cursor(sbp[0], nilfs);
- nilfs_commit_super(sbi, NILFS_SB_COMMIT);
+ nilfs_commit_super(sb, NILFS_SB_COMMIT);
}
}
up_write(&nilfs->ns_sem);
return err;
}
-int nilfs_attach_checkpoint(struct nilfs_sb_info *sbi, __u64 cno, int curr_mnt,
+int nilfs_attach_checkpoint(struct super_block *sb, __u64 cno, int curr_mnt,
struct nilfs_root **rootp)
{
- struct the_nilfs *nilfs = sbi->s_nilfs;
+ struct the_nilfs *nilfs = sb->s_fs_info;
struct nilfs_root *root;
struct nilfs_checkpoint *raw_cp;
struct buffer_head *bh_cp;
goto failed;
}
- err = nilfs_ifile_read(sbi->s_super, root, nilfs->ns_inode_size,
+ err = nilfs_ifile_read(sb, root, nilfs->ns_inode_size,
&raw_cp->cp_ifile_inode, &root->ifile);
if (err)
goto failed_bh;
static int nilfs_freeze(struct super_block *sb)
{
- struct nilfs_sb_info *sbi = NILFS_SB(sb);
- struct the_nilfs *nilfs = sbi->s_nilfs;
+ struct the_nilfs *nilfs = sb->s_fs_info;
int err;
if (sb->s_flags & MS_RDONLY)
/* Mark super block clean */
down_write(&nilfs->ns_sem);
- err = nilfs_cleanup_super(sbi);
+ err = nilfs_cleanup_super(sb);
up_write(&nilfs->ns_sem);
return err;
}
static int nilfs_unfreeze(struct super_block *sb)
{
- struct nilfs_sb_info *sbi = NILFS_SB(sb);
- struct the_nilfs *nilfs = sbi->s_nilfs;
+ struct the_nilfs *nilfs = sb->s_fs_info;
if (sb->s_flags & MS_RDONLY)
return 0;
down_write(&nilfs->ns_sem);
- nilfs_setup_super(sbi, false);
+ nilfs_setup_super(sb, false);
up_write(&nilfs->ns_sem);
return 0;
}
static int nilfs_show_options(struct seq_file *seq, struct vfsmount *vfs)
{
struct super_block *sb = vfs->mnt_sb;
- struct nilfs_sb_info *sbi = NILFS_SB(sb);
+ struct the_nilfs *nilfs = sb->s_fs_info;
struct nilfs_root *root = NILFS_I(vfs->mnt_root->d_inode)->i_root;
- if (!nilfs_test_opt(sbi, BARRIER))
+ if (!nilfs_test_opt(nilfs, BARRIER))
seq_puts(seq, ",nobarrier");
if (root->cno != NILFS_CPTREE_CURRENT_CNO)
seq_printf(seq, ",cp=%llu", (unsigned long long)root->cno);
- if (nilfs_test_opt(sbi, ERRORS_PANIC))
+ if (nilfs_test_opt(nilfs, ERRORS_PANIC))
seq_puts(seq, ",errors=panic");
- if (nilfs_test_opt(sbi, ERRORS_CONT))
+ if (nilfs_test_opt(nilfs, ERRORS_CONT))
seq_puts(seq, ",errors=continue");
- if (nilfs_test_opt(sbi, STRICT_ORDER))
+ if (nilfs_test_opt(nilfs, STRICT_ORDER))
seq_puts(seq, ",order=strict");
- if (nilfs_test_opt(sbi, NORECOVERY))
+ if (nilfs_test_opt(nilfs, NORECOVERY))
seq_puts(seq, ",norecovery");
- if (nilfs_test_opt(sbi, DISCARD))
+ if (nilfs_test_opt(nilfs, DISCARD))
seq_puts(seq, ",discard");
return 0;
static int parse_options(char *options, struct super_block *sb, int is_remount)
{
- struct nilfs_sb_info *sbi = NILFS_SB(sb);
+ struct the_nilfs *nilfs = sb->s_fs_info;
char *p;
substring_t args[MAX_OPT_ARGS];
token = match_token(p, tokens, args);
switch (token) {
case Opt_barrier:
- nilfs_set_opt(sbi, BARRIER);
+ nilfs_set_opt(nilfs, BARRIER);
break;
case Opt_nobarrier:
- nilfs_clear_opt(sbi, BARRIER);
+ nilfs_clear_opt(nilfs, BARRIER);
break;
case Opt_order:
if (strcmp(args[0].from, "relaxed") == 0)
/* Ordered data semantics */
- nilfs_clear_opt(sbi, STRICT_ORDER);
+ nilfs_clear_opt(nilfs, STRICT_ORDER);
else if (strcmp(args[0].from, "strict") == 0)
/* Strict in-order semantics */
- nilfs_set_opt(sbi, STRICT_ORDER);
+ nilfs_set_opt(nilfs, STRICT_ORDER);
else
return 0;
break;
case Opt_err_panic:
- nilfs_write_opt(sbi, ERROR_MODE, ERRORS_PANIC);
+ nilfs_write_opt(nilfs, ERROR_MODE, ERRORS_PANIC);
break;
case Opt_err_ro:
- nilfs_write_opt(sbi, ERROR_MODE, ERRORS_RO);
+ nilfs_write_opt(nilfs, ERROR_MODE, ERRORS_RO);
break;
case Opt_err_cont:
- nilfs_write_opt(sbi, ERROR_MODE, ERRORS_CONT);
+ nilfs_write_opt(nilfs, ERROR_MODE, ERRORS_CONT);
break;
case Opt_snapshot:
if (is_remount) {
}
break;
case Opt_norecovery:
- nilfs_set_opt(sbi, NORECOVERY);
+ nilfs_set_opt(nilfs, NORECOVERY);
break;
case Opt_discard:
- nilfs_set_opt(sbi, DISCARD);
+ nilfs_set_opt(nilfs, DISCARD);
break;
case Opt_nodiscard:
- nilfs_clear_opt(sbi, DISCARD);
+ nilfs_clear_opt(nilfs, DISCARD);
break;
default:
printk(KERN_ERR
}
static inline void
-nilfs_set_default_options(struct nilfs_sb_info *sbi,
+nilfs_set_default_options(struct super_block *sb,
struct nilfs_super_block *sbp)
{
- sbi->s_mount_opt =
+ struct the_nilfs *nilfs = sb->s_fs_info;
+
+ nilfs->ns_mount_opt =
NILFS_MOUNT_ERRORS_RO | NILFS_MOUNT_BARRIER;
}
-static int nilfs_setup_super(struct nilfs_sb_info *sbi, int is_mount)
+static int nilfs_setup_super(struct super_block *sb, int is_mount)
{
- struct the_nilfs *nilfs = sbi->s_nilfs;
+ struct the_nilfs *nilfs = sb->s_fs_info;
struct nilfs_super_block **sbp;
int max_mnt_count;
int mnt_count;
/* nilfs->ns_sem must be locked by the caller. */
- sbp = nilfs_prepare_super(sbi, 0);
+ sbp = nilfs_prepare_super(sb, 0);
if (!sbp)
return -EIO;
/* synchronize sbp[1] with sbp[0] */
if (sbp[1])
memcpy(sbp[1], sbp[0], nilfs->ns_sbsize);
- return nilfs_commit_super(sbi, NILFS_SB_COMMIT_ALL);
+ return nilfs_commit_super(sb, NILFS_SB_COMMIT_ALL);
}
struct nilfs_super_block *nilfs_read_super_block(struct super_block *sb,
struct nilfs_super_block *sbp,
char *data)
{
- struct nilfs_sb_info *sbi = NILFS_SB(sb);
+ struct the_nilfs *nilfs = sb->s_fs_info;
sb->s_magic = le16_to_cpu(sbp->s_magic);
sb->s_flags |= MS_NOATIME;
#endif
- nilfs_set_default_options(sbi, sbp);
+ nilfs_set_default_options(sb, sbp);
- sbi->s_resuid = le16_to_cpu(sbp->s_def_resuid);
- sbi->s_resgid = le16_to_cpu(sbp->s_def_resgid);
- sbi->s_interval = le32_to_cpu(sbp->s_c_interval);
- sbi->s_watermark = le32_to_cpu(sbp->s_c_block_max);
+ nilfs->ns_resuid = le16_to_cpu(sbp->s_def_resuid);
+ nilfs->ns_resgid = le16_to_cpu(sbp->s_def_resgid);
+ nilfs->ns_interval = le32_to_cpu(sbp->s_c_interval);
+ nilfs->ns_watermark = le32_to_cpu(sbp->s_c_block_max);
return !parse_options(data, sb, 0) ? -EINVAL : 0 ;
}
static int nilfs_attach_snapshot(struct super_block *s, __u64 cno,
struct dentry **root_dentry)
{
- struct the_nilfs *nilfs = NILFS_SB(s)->s_nilfs;
+ struct the_nilfs *nilfs = s->s_fs_info;
struct nilfs_root *root;
int ret;
goto out;
}
- ret = nilfs_attach_checkpoint(NILFS_SB(s), cno, false, &root);
+ ret = nilfs_attach_checkpoint(s, cno, false, &root);
if (ret) {
printk(KERN_ERR "NILFS: error loading snapshot "
"(checkpoint number=%llu).\n",
int nilfs_checkpoint_is_mounted(struct super_block *sb, __u64 cno)
{
- struct the_nilfs *nilfs = NILFS_SB(sb)->s_nilfs;
+ struct the_nilfs *nilfs = sb->s_fs_info;
struct nilfs_root *root;
struct inode *inode;
struct dentry *dentry;
return true; /* protect recent checkpoints */
ret = false;
- root = nilfs_lookup_root(NILFS_SB(sb)->s_nilfs, cno);
+ root = nilfs_lookup_root(nilfs, cno);
if (root) {
inode = nilfs_ilookup(sb, root, NILFS_ROOT_INO);
if (inode) {
nilfs_fill_super(struct super_block *sb, void *data, int silent)
{
struct the_nilfs *nilfs;
- struct nilfs_sb_info *sbi;
struct nilfs_root *fsroot;
struct backing_dev_info *bdi;
__u64 cno;
int err;
- sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);
- if (!sbi)
+ nilfs = alloc_nilfs(sb->s_bdev);
+ if (!nilfs)
return -ENOMEM;
- sb->s_fs_info = sbi;
- sbi->s_super = sb;
-
- nilfs = alloc_nilfs(sb->s_bdev);
- if (!nilfs) {
- err = -ENOMEM;
- goto failed_sbi;
- }
- sbi->s_nilfs = nilfs;
+ sb->s_fs_info = nilfs;
- err = init_nilfs(nilfs, sbi, (char *)data);
+ err = init_nilfs(nilfs, sb, (char *)data);
if (err)
goto failed_nilfs;
- spin_lock_init(&sbi->s_inode_lock);
- INIT_LIST_HEAD(&sbi->s_dirty_files);
-
- /*
- * Following initialization is overlapped because
- * nilfs_sb_info structure has been cleared at the beginning.
- * But we reserve them to keep our interest and make ready
- * for the future change.
- */
- get_random_bytes(&sbi->s_next_generation,
- sizeof(sbi->s_next_generation));
- spin_lock_init(&sbi->s_next_gen_lock);
-
sb->s_op = &nilfs_sops;
sb->s_export_op = &nilfs_export_ops;
sb->s_root = NULL;
bdi = sb->s_bdev->bd_inode->i_mapping->backing_dev_info;
sb->s_bdi = bdi ? : &default_backing_dev_info;
- err = load_nilfs(nilfs, sbi);
+ err = load_nilfs(nilfs, sb);
if (err)
goto failed_nilfs;
cno = nilfs_last_cno(nilfs);
- err = nilfs_attach_checkpoint(sbi, cno, true, &fsroot);
+ err = nilfs_attach_checkpoint(sb, cno, true, &fsroot);
if (err) {
printk(KERN_ERR "NILFS: error loading last checkpoint "
"(checkpoint number=%llu).\n", (unsigned long long)cno);
}
if (!(sb->s_flags & MS_RDONLY)) {
- err = nilfs_attach_segment_constructor(sbi, fsroot);
+ err = nilfs_attach_log_writer(sb, fsroot);
if (err)
goto failed_checkpoint;
}
if (!(sb->s_flags & MS_RDONLY)) {
down_write(&nilfs->ns_sem);
- nilfs_setup_super(sbi, true);
+ nilfs_setup_super(sb, true);
up_write(&nilfs->ns_sem);
}
return 0;
failed_segctor:
- nilfs_detach_segment_constructor(sbi);
+ nilfs_detach_log_writer(sb);
failed_checkpoint:
nilfs_put_root(fsroot);
failed_nilfs:
destroy_nilfs(nilfs);
-
- failed_sbi:
- sb->s_fs_info = NULL;
- kfree(sbi);
return err;
}
static int nilfs_remount(struct super_block *sb, int *flags, char *data)
{
- struct nilfs_sb_info *sbi = NILFS_SB(sb);
- struct the_nilfs *nilfs = sbi->s_nilfs;
+ struct the_nilfs *nilfs = sb->s_fs_info;
unsigned long old_sb_flags;
unsigned long old_mount_opt;
int err;
old_sb_flags = sb->s_flags;
- old_mount_opt = sbi->s_mount_opt;
+ old_mount_opt = nilfs->ns_mount_opt;
if (!parse_options(data, sb, 1)) {
err = -EINVAL;
if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY))
goto out;
if (*flags & MS_RDONLY) {
- /* Shutting down the segment constructor */
- nilfs_detach_segment_constructor(sbi);
+ /* Shutting down log writer */
+ nilfs_detach_log_writer(sb);
sb->s_flags |= MS_RDONLY;
/*
* the RDONLY flag and then mark the partition as valid again.
*/
down_write(&nilfs->ns_sem);
- nilfs_cleanup_super(sbi);
+ nilfs_cleanup_super(sb);
up_write(&nilfs->ns_sem);
} else {
__u64 features;
sb->s_flags &= ~MS_RDONLY;
root = NILFS_I(sb->s_root->d_inode)->i_root;
- err = nilfs_attach_segment_constructor(sbi, root);
+ err = nilfs_attach_log_writer(sb, root);
if (err)
goto restore_opts;
down_write(&nilfs->ns_sem);
- nilfs_setup_super(sbi, true);
+ nilfs_setup_super(sb, true);
up_write(&nilfs->ns_sem);
}
out:
restore_opts:
sb->s_flags = old_sb_flags;
- sbi->s_mount_opt = old_mount_opt;
+ nilfs->ns_mount_opt = old_mount_opt;
return err;
}
struct nilfs_super_data {
struct block_device *bdev;
- struct nilfs_sb_info *sbi;
__u64 cno;
int flags;
};
#include <linux/slab.h>
#include <linux/blkdev.h>
#include <linux/backing-dev.h>
+#include <linux/random.h>
#include <linux/crc32.h>
#include "nilfs.h"
#include "segment.h"
nilfs->ns_bdev = bdev;
atomic_set(&nilfs->ns_ndirtyblks, 0);
init_rwsem(&nilfs->ns_sem);
+ INIT_LIST_HEAD(&nilfs->ns_dirty_files);
INIT_LIST_HEAD(&nilfs->ns_gc_inodes);
+ spin_lock_init(&nilfs->ns_inode_lock);
+ spin_lock_init(&nilfs->ns_next_gen_lock);
spin_lock_init(&nilfs->ns_last_segment_lock);
nilfs->ns_cptree = RB_ROOT;
spin_lock_init(&nilfs->ns_cptree_lock);
/**
* load_nilfs - load and recover the nilfs
* @nilfs: the_nilfs structure to be released
- * @sbi: nilfs_sb_info used to recover past segment
+ * @sb: super block isntance used to recover past segment
*
* load_nilfs() searches and load the latest super root,
* attaches the last segment, and does recovery if needed.
* The caller must call this exclusively for simultaneous mounts.
*/
-int load_nilfs(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi)
+int load_nilfs(struct the_nilfs *nilfs, struct super_block *sb)
{
struct nilfs_recovery_info ri;
- unsigned int s_flags = sbi->s_super->s_flags;
+ unsigned int s_flags = sb->s_flags;
int really_read_only = bdev_read_only(nilfs->ns_bdev);
int valid_fs = nilfs_valid_fs(nilfs);
int err;
goto scan_error;
}
- err = nilfs_load_super_root(nilfs, sbi->s_super, ri.ri_super_root);
+ err = nilfs_load_super_root(nilfs, sb, ri.ri_super_root);
if (unlikely(err)) {
printk(KERN_ERR "NILFS: error loading super root.\n");
goto failed;
if (s_flags & MS_RDONLY) {
__u64 features;
- if (nilfs_test_opt(sbi, NORECOVERY)) {
+ if (nilfs_test_opt(nilfs, NORECOVERY)) {
printk(KERN_INFO "NILFS: norecovery option specified. "
"skipping roll-forward recovery\n");
goto skip_recovery;
err = -EROFS;
goto failed_unload;
}
- sbi->s_super->s_flags &= ~MS_RDONLY;
- } else if (nilfs_test_opt(sbi, NORECOVERY)) {
+ sb->s_flags &= ~MS_RDONLY;
+ } else if (nilfs_test_opt(nilfs, NORECOVERY)) {
printk(KERN_ERR "NILFS: recovery cancelled because norecovery "
"option was specified for a read/write mount\n");
err = -EINVAL;
goto failed_unload;
}
- err = nilfs_salvage_orphan_logs(nilfs, sbi, &ri);
+ err = nilfs_salvage_orphan_logs(nilfs, sb, &ri);
if (err)
goto failed_unload;
down_write(&nilfs->ns_sem);
nilfs->ns_mount_state |= NILFS_VALID_FS; /* set "clean" flag */
- err = nilfs_cleanup_super(sbi);
+ err = nilfs_cleanup_super(sb);
up_write(&nilfs->ns_sem);
if (err) {
skip_recovery:
nilfs_clear_recovery_info(&ri);
- sbi->s_super->s_flags = s_flags;
+ sb->s_flags = s_flags;
return 0;
scan_error:
failed:
nilfs_clear_recovery_info(&ri);
- sbi->s_super->s_flags = s_flags;
+ sb->s_flags = s_flags;
return err;
}
return -EIO;
}
printk(KERN_WARNING
- "NILFS warning: unable to read primary superblock\n");
- } else if (!sbp[1])
+ "NILFS warning: unable to read primary superblock "
+ "(blocksize = %d)\n", blocksize);
+ } else if (!sbp[1]) {
printk(KERN_WARNING
- "NILFS warning: unable to read secondary superblock\n");
+ "NILFS warning: unable to read secondary superblock "
+ "(blocksize = %d)\n", blocksize);
+ }
/*
* Compare two super blocks and set 1 in swp if the secondary
if (!valid[!swp])
printk(KERN_WARNING "NILFS warning: broken superblock. "
- "using spare superblock.\n");
+ "using spare superblock (blocksize = %d).\n", blocksize);
if (swp)
nilfs_swap_super_block(nilfs);
/**
* init_nilfs - initialize a NILFS instance.
* @nilfs: the_nilfs structure
- * @sbi: nilfs_sb_info
* @sb: super block
* @data: mount options
*
* Return Value: On success, 0 is returned. On error, a negative error
* code is returned.
*/
-int init_nilfs(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi, char *data)
+int init_nilfs(struct the_nilfs *nilfs, struct super_block *sb, char *data)
{
- struct super_block *sb = sbi->s_super;
struct nilfs_super_block *sbp;
int blocksize;
int err;
nilfs->ns_blocksize_bits = sb->s_blocksize_bits;
nilfs->ns_blocksize = blocksize;
+ get_random_bytes(&nilfs->ns_next_generation,
+ sizeof(nilfs->ns_next_generation));
+
err = nilfs_store_disk_layout(nilfs, sbp);
if (err)
goto failed_sbh;
#include <linux/blkdev.h>
#include <linux/backing-dev.h>
#include <linux/slab.h>
-#include "sb.h"
+
+struct nilfs_sc_info;
/* the_nilfs struct */
enum {
* @ns_last_cno: checkpoint number of the latest segment
* @ns_prot_seq: least sequence number of segments which must not be reclaimed
* @ns_prev_seq: base sequence number used to decide if advance log cursor
- * @ns_segctor_sem: segment constructor semaphore
+ * @ns_writer: log writer
+ * @ns_segctor_sem: semaphore protecting log write
* @ns_dat: DAT file inode
* @ns_cpfile: checkpoint file inode
* @ns_sufile: segusage file inode
* @ns_cptree: rb-tree of all mounted checkpoints (nilfs_root)
* @ns_cptree_lock: lock protecting @ns_cptree
+ * @ns_dirty_files: list of dirty files
+ * @ns_inode_lock: lock protecting @ns_dirty_files
* @ns_gc_inodes: dummy inodes to keep live blocks
+ * @ns_next_generation: next generation number for inodes
+ * @ns_next_gen_lock: lock protecting @ns_next_generation
+ * @ns_mount_opt: mount options
+ * @ns_resuid: uid for reserved blocks
+ * @ns_resgid: gid for reserved blocks
+ * @ns_interval: checkpoint creation interval
+ * @ns_watermark: watermark for the number of dirty buffers
* @ns_blocksize_bits: bit length of block size
* @ns_blocksize: block size
* @ns_nsegments: number of segments in filesystem
u64 ns_prot_seq;
u64 ns_prev_seq;
+ struct nilfs_sc_info *ns_writer;
struct rw_semaphore ns_segctor_sem;
/*
struct rb_root ns_cptree;
spinlock_t ns_cptree_lock;
+ /* Dirty inode list */
+ struct list_head ns_dirty_files;
+ spinlock_t ns_inode_lock;
+
/* GC inode list */
struct list_head ns_gc_inodes;
+ /* Inode allocator */
+ u32 ns_next_generation;
+ spinlock_t ns_next_gen_lock;
+
+ /* Mount options */
+ unsigned long ns_mount_opt;
+
+ uid_t ns_resuid;
+ gid_t ns_resgid;
+ unsigned long ns_interval;
+ unsigned long ns_watermark;
+
/* Disk layout information (static) */
unsigned int ns_blocksize_bits;
unsigned int ns_blocksize;
THE_NILFS_FNS(GC_RUNNING, gc_running)
THE_NILFS_FNS(SB_DIRTY, sb_dirty)
+/*
+ * Mount option operations
+ */
+#define nilfs_clear_opt(nilfs, opt) \
+ do { (nilfs)->ns_mount_opt &= ~NILFS_MOUNT_##opt; } while (0)
+#define nilfs_set_opt(nilfs, opt) \
+ do { (nilfs)->ns_mount_opt |= NILFS_MOUNT_##opt; } while (0)
+#define nilfs_test_opt(nilfs, opt) ((nilfs)->ns_mount_opt & NILFS_MOUNT_##opt)
+#define nilfs_write_opt(nilfs, mask, opt) \
+ do { (nilfs)->ns_mount_opt = \
+ (((nilfs)->ns_mount_opt & ~NILFS_MOUNT_##mask) | \
+ NILFS_MOUNT_##opt); \
+ } while (0)
+
/**
* struct nilfs_root - nilfs root object
* @cno: checkpoint number
void nilfs_set_last_segment(struct the_nilfs *, sector_t, u64, __u64);
struct the_nilfs *alloc_nilfs(struct block_device *bdev);
void destroy_nilfs(struct the_nilfs *nilfs);
-int init_nilfs(struct the_nilfs *, struct nilfs_sb_info *, char *);
-int load_nilfs(struct the_nilfs *, struct nilfs_sb_info *);
+int init_nilfs(struct the_nilfs *nilfs, struct super_block *sb, char *data);
+int load_nilfs(struct the_nilfs *nilfs, struct super_block *sb);
int nilfs_discard_segments(struct the_nilfs *, __u64 *, size_t);
int nilfs_count_free_blocks(struct the_nilfs *, sector_t *);
struct nilfs_root *nilfs_lookup_root(struct the_nilfs *nilfs, __u64 cno);
struct nilfs_root *nilfs_find_or_create_root(struct the_nilfs *nilfs,
__u64 cno);
void nilfs_put_root(struct nilfs_root *root);
-struct nilfs_sb_info *nilfs_find_sbinfo(struct the_nilfs *, int, __u64);
int nilfs_near_disk_full(struct the_nilfs *);
void nilfs_fall_back_super_block(struct the_nilfs *);
void nilfs_swap_super_block(struct the_nilfs *);
#define XENFS_SUPER_MAGIC 0xabba1974
#define EXT4_SUPER_MAGIC 0xEF53
#define BTRFS_SUPER_MAGIC 0x9123683E
+#define NILFS_SUPER_MAGIC 0x3434
#define HPFS_SUPER_MAGIC 0xf995e849
#define ISOFS_SUPER_MAGIC 0x9660
#define JFFS2_SUPER_MAGIC 0x72b6
#include <linux/types.h>
#include <linux/ioctl.h>
-
-/*
- * Inode flags stored in nilfs_inode and on-memory nilfs inode
- *
- * We define these flags based on ext2-fs because of the
- * compatibility reason; to avoid problems in chattr(1)
- */
-#define NILFS_SECRM_FL 0x00000001 /* Secure deletion */
-#define NILFS_UNRM_FL 0x00000002 /* Undelete */
-#define NILFS_SYNC_FL 0x00000008 /* Synchronous updates */
-#define NILFS_IMMUTABLE_FL 0x00000010 /* Immutable file */
-#define NILFS_APPEND_FL 0x00000020 /* writes to file may only append */
-#define NILFS_NODUMP_FL 0x00000040 /* do not dump file */
-#define NILFS_NOATIME_FL 0x00000080 /* do not update atime */
-/* Reserved for compression usage... */
-#define NILFS_NOTAIL_FL 0x00008000 /* file tail should not be merged */
-#define NILFS_DIRSYNC_FL 0x00010000 /* dirsync behaviour */
-
-#define NILFS_FL_USER_VISIBLE 0x0003DFFF /* User visible flags */
-#define NILFS_FL_USER_MODIFIABLE 0x000380FF /* User modifiable flags */
+#include <linux/magic.h>
#define NILFS_INODE_BMAP_SIZE 7
* If there is a bit set in the incompatible feature set that the kernel
* doesn't know about, it should refuse to mount the filesystem.
*/
+#define NILFS_FEATURE_COMPAT_RO_BLOCK_COUNT 0x00000001ULL
+
#define NILFS_FEATURE_COMPAT_SUPP 0ULL
-#define NILFS_FEATURE_COMPAT_RO_SUPP 0ULL
+#define NILFS_FEATURE_COMPAT_RO_SUPP NILFS_FEATURE_COMPAT_RO_BLOCK_COUNT
#define NILFS_FEATURE_INCOMPAT_SUPP 0ULL
/*
#define NILFS_USER_INO 11 /* Fisrt user's file inode number */
#define NILFS_SB_OFFSET_BYTES 1024 /* byte offset of nilfs superblock */
-#define NILFS_SUPER_MAGIC 0x3434 /* NILFS filesystem magic number */
#define NILFS_SEG_MIN_BLOCKS 16 /* Minimum number of blocks in
a full segment */
{
unsigned len = le16_to_cpu(dlen);
+#if !defined(__KERNEL__) || (PAGE_CACHE_SIZE >= 65536)
if (len == NILFS_MAX_REC_LEN)
return 1 << 16;
+#endif
return len;
}
static inline __le16 nilfs_rec_len_to_disk(unsigned len)
{
+#if !defined(__KERNEL__) || (PAGE_CACHE_SIZE >= 65536)
if (len == (1 << 16))
return cpu_to_le16(NILFS_MAX_REC_LEN);
else if (len > (1 << 16))
BUG();
+#endif
return cpu_to_le16(len);
}
__le64 cp_create;
__le64 cp_nblk_inc;
__le64 cp_inodes_count;
- __le64 cp_blocks_count; /* Reserved (might be deleted) */
+ __le64 cp_blocks_count;
/* Do not change the byte offset of ifile inode.
To keep the compatibility of the disk format,
projects / karo-tx-linux.git / commitdiff