#ifndef _LINUX_FS_H
#define _LINUX_FS_H
-
#include <linux/linkage.h>
#include <linux/wait.h>
#include <linux/kdev_t.h>
#include <linux/lockdep.h>
#include <linux/percpu-rwsem.h>
#include <linux/blk_types.h>
+#include <linux/workqueue.h>
+#include <linux/percpu-rwsem.h>
#include <asm/byteorder.h>
#include <uapi/linux/fs.h>
struct seq_file;
struct workqueue_struct;
struct iov_iter;
-struct vm_fault;
extern void __init inode_init(void);
extern void __init inode_init_early(void);
unsigned long dirtied_time_when;
struct hlist_node i_hash;
- struct list_head i_wb_list; /* backing dev IO list */
+ struct list_head i_io_list; /* backing dev IO list */
#ifdef CONFIG_CGROUP_WRITEBACK
struct bdi_writeback *i_wb; /* the associated cgroup wb */
struct lock_manager {
struct list_head list;
+ /*
+ * NFSv4 and up also want opens blocked during the grace period;
+ * NLM doesn't care:
+ */
+ bool block_opens;
};
struct net;
void locks_start_grace(struct net *, struct lock_manager *);
void locks_end_grace(struct lock_manager *);
int locks_in_grace(struct net *);
+int opens_in_grace(struct net *);
/* that will die - we need it for nfs_lock_info */
#include <linux/nfs_fs_i.h>
extern int fcntl_getlease(struct file *filp);
/* fs/locks.c */
+extern struct srcu_notifier_head lease_notifier_chain;
void locks_free_lock_context(struct file_lock_context *ctx);
void locks_free_lock(struct file_lock *fl);
extern void locks_init_lock(struct file_lock *);
extern void locks_release_private(struct file_lock *);
extern void posix_test_lock(struct file *, struct file_lock *);
extern int posix_lock_file(struct file *, struct file_lock *, struct file_lock *);
-extern int posix_lock_inode_wait(struct inode *, struct file_lock *);
extern int posix_unblock_lock(struct file_lock *);
extern int vfs_test_lock(struct file *, struct file_lock *);
extern int vfs_lock_file(struct file *, unsigned int, struct file_lock *, struct file_lock *);
extern int vfs_cancel_lock(struct file *filp, struct file_lock *fl);
-extern int flock_lock_inode_wait(struct inode *inode, struct file_lock *fl);
+extern int locks_lock_inode_wait(struct inode *inode, struct file_lock *fl);
extern int __break_lease(struct inode *inode, unsigned int flags, unsigned int type);
extern void lease_get_mtime(struct inode *, struct timespec *time);
extern int generic_setlease(struct file *, long, struct file_lock **, void **priv);
return -ENOLCK;
}
-static inline int posix_lock_inode_wait(struct inode *inode,
- struct file_lock *fl)
-{
- return -ENOLCK;
-}
-
static inline int posix_unblock_lock(struct file_lock *waiter)
{
return -ENOENT;
return 0;
}
-static inline int flock_lock_inode_wait(struct inode *inode,
- struct file_lock *request)
+static inline int locks_lock_inode_wait(struct inode *inode, struct file_lock *fl)
{
return -ENOLCK;
}
return f->f_inode;
}
-static inline int posix_lock_file_wait(struct file *filp, struct file_lock *fl)
-{
- return posix_lock_inode_wait(file_inode(filp), fl);
-}
-
-static inline int flock_lock_file_wait(struct file *filp, struct file_lock *fl)
+static inline int locks_lock_file_wait(struct file *filp, struct file_lock *fl)
{
- return flock_lock_inode_wait(file_inode(filp), fl);
+ return locks_lock_inode_wait(file_inode(filp), fl);
}
struct fasync_struct {
/* sb->s_iflags */
#define SB_I_CGROUPWB 0x00000001 /* cgroup-aware writeback enabled */
+#define SB_I_NOEXEC 0x00000002 /* Ignore executables on this fs */
/* Possible states of 'frozen' field */
enum {
#define SB_FREEZE_LEVELS (SB_FREEZE_COMPLETE - 1)
struct sb_writers {
- /* Counters for counting writers at each level */
- struct percpu_counter counter[SB_FREEZE_LEVELS];
- wait_queue_head_t wait; /* queue for waiting for
- writers / faults to finish */
- int frozen; /* Is sb frozen? */
- wait_queue_head_t wait_unfrozen; /* queue for waiting for
- sb to be thawed */
-#ifdef CONFIG_DEBUG_LOCK_ALLOC
- struct lockdep_map lock_map[SB_FREEZE_LEVELS];
-#endif
+ int frozen; /* Is sb frozen? */
+ wait_queue_head_t wait_unfrozen; /* for get_super_thawed() */
+ struct percpu_rw_semaphore rw_sem[SB_FREEZE_LEVELS];
};
struct super_block {
#endif
const struct xattr_handler **s_xattr;
- struct list_head s_inodes; /* all inodes */
struct hlist_bl_head s_anon; /* anonymous dentries for (nfs) exporting */
struct list_head s_mounts; /* list of mounts; _not_ for fs use */
struct block_device *s_bdev;
struct list_lru s_dentry_lru ____cacheline_aligned_in_smp;
struct list_lru s_inode_lru ____cacheline_aligned_in_smp;
struct rcu_head rcu;
+ struct work_struct destroy_work;
+
+ struct mutex s_sync_lock; /* sync serialisation lock */
/*
* Indicates how deep in a filesystem stack this SB is
*/
int s_stack_depth;
+
+ /* s_inode_list_lock protects s_inodes */
+ spinlock_t s_inode_list_lock ____cacheline_aligned_in_smp;
+ struct list_head s_inodes; /* all inodes */
};
extern struct timespec current_fs_time(struct super_block *sb);
void __sb_end_write(struct super_block *sb, int level);
int __sb_start_write(struct super_block *sb, int level, bool wait);
+#define __sb_writers_acquired(sb, lev) \
+ percpu_rwsem_acquire(&(sb)->s_writers.rw_sem[(lev)-1], 1, _THIS_IP_)
+#define __sb_writers_release(sb, lev) \
+ percpu_rwsem_release(&(sb)->s_writers.rw_sem[(lev)-1], 1, _THIS_IP_)
+
/**
* sb_end_write - drop write access to a superblock
* @sb: the super we wrote to
long (*unlocked_ioctl) (struct file *, unsigned int, unsigned long);
long (*compat_ioctl) (struct file *, unsigned int, unsigned long);
int (*mmap) (struct file *, struct vm_area_struct *);
- int (*mremap)(struct file *, struct vm_area_struct *);
int (*open) (struct inode *, struct file *);
int (*flush) (struct file *, fl_owner_t id);
int (*release) (struct inode *, struct file *);
extern void __remove_inode_hash(struct inode *);
static inline void remove_inode_hash(struct inode *inode)
{
- if (!inode_unhashed(inode))
+ if (!inode_unhashed(inode) && !hlist_fake(&inode->i_hash))
__remove_inode_hash(inode);
}
extern int generic_file_open(struct inode * inode, struct file * filp);
extern int nonseekable_open(struct inode * inode, struct file * filp);
-ssize_t dax_do_io(struct kiocb *, struct inode *, struct iov_iter *, loff_t,
- get_block_t, dio_iodone_t, int flags);
-int dax_clear_blocks(struct inode *, sector_t block, long size);
-int dax_zero_page_range(struct inode *, loff_t from, unsigned len, get_block_t);
-int dax_truncate_page(struct inode *, loff_t from, get_block_t);
-int dax_fault(struct vm_area_struct *, struct vm_fault *, get_block_t,
- dax_iodone_t);
-int __dax_fault(struct vm_area_struct *, struct vm_fault *, get_block_t,
- dax_iodone_t);
-int dax_pfn_mkwrite(struct vm_area_struct *, struct vm_fault *);
-#define dax_mkwrite(vma, vmf, gb, iod) dax_fault(vma, vmf, gb, iod)
-#define __dax_mkwrite(vma, vmf, gb, iod) __dax_fault(vma, vmf, gb, iod)
-
#ifdef CONFIG_BLOCK
typedef void (dio_submit_t)(int rw, struct bio *bio, struct inode *inode,
loff_t file_offset);
return !IS_DEADDIR(inode);
}
+extern bool path_noexec(const struct path *path);
+
#endif /* _LINUX_FS_H */
projects / karo-tx-linux.git / blobdiff