return need_update;
}
-static struct nat_entry *grab_nat_entry(struct f2fs_nm_info *nm_i, nid_t nid)
+static struct nat_entry *grab_nat_entry(struct f2fs_nm_info *nm_i, nid_t nid,
+ bool no_fail)
{
struct nat_entry *new;
- new = f2fs_kmem_cache_alloc(nat_entry_slab, GFP_NOFS);
- f2fs_radix_tree_insert(&nm_i->nat_root, nid, new);
+ if (no_fail) {
+ new = f2fs_kmem_cache_alloc(nat_entry_slab, GFP_NOFS);
+ f2fs_radix_tree_insert(&nm_i->nat_root, nid, new);
+ } else {
+ new = kmem_cache_alloc(nat_entry_slab, GFP_NOFS);
+ if (!new)
+ return NULL;
+ if (radix_tree_insert(&nm_i->nat_root, nid, new)) {
+ kmem_cache_free(nat_entry_slab, new);
+ return NULL;
+ }
+ }
+
memset(new, 0, sizeof(struct nat_entry));
nat_set_nid(new, nid);
nat_reset_flag(new);
e = __lookup_nat_cache(nm_i, nid);
if (!e) {
- e = grab_nat_entry(nm_i, nid);
- node_info_from_raw_nat(&e->ni, ne);
+ e = grab_nat_entry(nm_i, nid, false);
+ if (e)
+ node_info_from_raw_nat(&e->ni, ne);
} else {
f2fs_bug_on(sbi, nat_get_ino(e) != le32_to_cpu(ne->ino) ||
nat_get_blkaddr(e) !=
down_write(&nm_i->nat_tree_lock);
e = __lookup_nat_cache(nm_i, ni->nid);
if (!e) {
- e = grab_nat_entry(nm_i, ni->nid);
+ e = grab_nat_entry(nm_i, ni->nid, true);
copy_node_info(&e->ni, ni);
f2fs_bug_on(sbi, ni->blk_addr == NEW_ADDR);
} else if (new_blkaddr == NEW_ADDR) {
f2fs_i_xnid_write(inode, 0);
- /* need to do checkpoint during fsync */
- F2FS_I(inode)->xattr_ver = cur_cp_version(F2FS_CKPT(sbi));
-
set_new_dnode(&dn, inode, page, npage, nid);
if (page)
unsigned int ofs, struct page *ipage)
{
struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
- struct node_info old_ni, new_ni;
+ struct node_info new_ni;
struct page *page;
int err;
err = -ENOSPC;
goto fail;
}
-
- get_node_info(sbi, dn->nid, &old_ni);
-
- /* Reinitialize old_ni with new node page */
- f2fs_bug_on(sbi, old_ni.blk_addr != NULL_ADDR);
- new_ni = old_ni;
+#ifdef CONFIG_F2FS_CHECK_FS
+ get_node_info(sbi, dn->nid, &new_ni);
+ f2fs_bug_on(sbi, new_ni.blk_addr != NULL_ADDR);
+#endif
+ new_ni.nid = dn->nid;
new_ni.ino = dn->inode->i_ino;
+ new_ni.blk_addr = NULL_ADDR;
+ new_ni.flag = 0;
+ new_ni.version = 0;
set_node_addr(sbi, &new_ni, NEW_ADDR, false);
f2fs_wait_on_page_writeback(page, NODE, true);
return last_page;
}
+static int __write_node_page(struct page *page, bool atomic, bool *submitted,
+ struct writeback_control *wbc)
+{
+ struct f2fs_sb_info *sbi = F2FS_P_SB(page);
+ nid_t nid;
+ struct node_info ni;
+ struct f2fs_io_info fio = {
+ .sbi = sbi,
+ .type = NODE,
+ .op = REQ_OP_WRITE,
+ .op_flags = wbc_to_write_flags(wbc),
+ .page = page,
+ .encrypted_page = NULL,
+ .submitted = false,
+ };
+
+ trace_f2fs_writepage(page, NODE);
+
+ if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
+ goto redirty_out;
+ if (unlikely(f2fs_cp_error(sbi)))
+ goto redirty_out;
+
+ /* get old block addr of this node page */
+ nid = nid_of_node(page);
+ f2fs_bug_on(sbi, page->index != nid);
+
+ if (wbc->for_reclaim) {
+ if (!down_read_trylock(&sbi->node_write))
+ goto redirty_out;
+ } else {
+ down_read(&sbi->node_write);
+ }
+
+ get_node_info(sbi, nid, &ni);
+
+ /* This page is already truncated */
+ if (unlikely(ni.blk_addr == NULL_ADDR)) {
+ ClearPageUptodate(page);
+ dec_page_count(sbi, F2FS_DIRTY_NODES);
+ up_read(&sbi->node_write);
+ unlock_page(page);
+ return 0;
+ }
+
+ if (atomic && !test_opt(sbi, NOBARRIER))
+ fio.op_flags |= REQ_PREFLUSH | REQ_FUA;
+
+ set_page_writeback(page);
+ fio.old_blkaddr = ni.blk_addr;
+ write_node_page(nid, &fio);
+ set_node_addr(sbi, &ni, fio.new_blkaddr, is_fsync_dnode(page));
+ dec_page_count(sbi, F2FS_DIRTY_NODES);
+ up_read(&sbi->node_write);
+
+ if (wbc->for_reclaim) {
+ f2fs_submit_merged_bio_cond(sbi, page->mapping->host, 0,
+ page->index, NODE, WRITE);
+ submitted = NULL;
+ }
+
+ unlock_page(page);
+
+ if (unlikely(f2fs_cp_error(sbi))) {
+ f2fs_submit_merged_bio(sbi, NODE, WRITE);
+ submitted = NULL;
+ }
+ if (submitted)
+ *submitted = fio.submitted;
+
+ return 0;
+
+redirty_out:
+ redirty_page_for_writepage(wbc, page);
+ return AOP_WRITEPAGE_ACTIVATE;
+}
+
+static int f2fs_write_node_page(struct page *page,
+ struct writeback_control *wbc)
+{
+ return __write_node_page(page, false, NULL, wbc);
+}
+
int fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode,
struct writeback_control *wbc, bool atomic)
{
pgoff_t index, end;
+ pgoff_t last_idx = ULONG_MAX;
struct pagevec pvec;
int ret = 0;
struct page *last_page = NULL;
bool marked = false;
nid_t ino = inode->i_ino;
- int nwritten = 0;
if (atomic) {
last_page = last_fsync_dnode(sbi, ino);
for (i = 0; i < nr_pages; i++) {
struct page *page = pvec.pages[i];
+ bool submitted = false;
if (unlikely(f2fs_cp_error(sbi))) {
f2fs_put_page(last_page, 0);
if (!clear_page_dirty_for_io(page))
goto continue_unlock;
- ret = NODE_MAPPING(sbi)->a_ops->writepage(page, wbc);
+ ret = __write_node_page(page, atomic &&
+ page == last_page,
+ &submitted, wbc);
if (ret) {
unlock_page(page);
f2fs_put_page(last_page, 0);
break;
- } else {
- nwritten++;
+ } else if (submitted) {
+ last_idx = page->index;
}
if (page == last_page) {
goto retry;
}
out:
- if (nwritten)
- f2fs_submit_merged_bio_cond(sbi, NULL, NULL, ino, NODE, WRITE);
+ if (last_idx != ULONG_MAX)
+ f2fs_submit_merged_bio_cond(sbi, NULL, ino, last_idx,
+ NODE, WRITE);
return ret ? -EIO: 0;
}
for (i = 0; i < nr_pages; i++) {
struct page *page = pvec.pages[i];
+ bool submitted = false;
if (unlikely(f2fs_cp_error(sbi))) {
pagevec_release(&pvec);
set_fsync_mark(page, 0);
set_dentry_mark(page, 0);
- if (NODE_MAPPING(sbi)->a_ops->writepage(page, wbc))
+ ret = __write_node_page(page, false, &submitted, wbc);
+ if (ret)
unlock_page(page);
- else
+ else if (submitted)
nwritten++;
if (--wbc->nr_to_write == 0)
return ret;
}
-static int f2fs_write_node_page(struct page *page,
- struct writeback_control *wbc)
-{
- struct f2fs_sb_info *sbi = F2FS_P_SB(page);
- nid_t nid;
- struct node_info ni;
- struct f2fs_io_info fio = {
- .sbi = sbi,
- .type = NODE,
- .op = REQ_OP_WRITE,
- .op_flags = wbc_to_write_flags(wbc),
- .page = page,
- .encrypted_page = NULL,
- };
-
- trace_f2fs_writepage(page, NODE);
-
- if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
- goto redirty_out;
- if (unlikely(f2fs_cp_error(sbi)))
- goto redirty_out;
-
- /* get old block addr of this node page */
- nid = nid_of_node(page);
- f2fs_bug_on(sbi, page->index != nid);
-
- if (wbc->for_reclaim) {
- if (!down_read_trylock(&sbi->node_write))
- goto redirty_out;
- } else {
- down_read(&sbi->node_write);
- }
-
- get_node_info(sbi, nid, &ni);
-
- /* This page is already truncated */
- if (unlikely(ni.blk_addr == NULL_ADDR)) {
- ClearPageUptodate(page);
- dec_page_count(sbi, F2FS_DIRTY_NODES);
- up_read(&sbi->node_write);
- unlock_page(page);
- return 0;
- }
-
- set_page_writeback(page);
- fio.old_blkaddr = ni.blk_addr;
- write_node_page(nid, &fio);
- set_node_addr(sbi, &ni, fio.new_blkaddr, is_fsync_dnode(page));
- dec_page_count(sbi, F2FS_DIRTY_NODES);
- up_read(&sbi->node_write);
-
- if (wbc->for_reclaim)
- f2fs_submit_merged_bio_cond(sbi, NULL, page, 0, NODE, WRITE);
-
- unlock_page(page);
-
- if (unlikely(f2fs_cp_error(sbi)))
- f2fs_submit_merged_bio(sbi, NODE, WRITE);
-
- return 0;
-
-redirty_out:
- redirty_page_for_writepage(wbc, page);
- return AOP_WRITEPAGE_ACTIVATE;
-}
-
static int f2fs_write_node_pages(struct address_space *mapping,
struct writeback_control *wbc)
{
radix_tree_delete(&nm_i->free_nid_root, i->nid);
}
-static int add_free_nid(struct f2fs_sb_info *sbi, nid_t nid, bool build)
+/* return if the nid is recognized as free */
+static bool add_free_nid(struct f2fs_sb_info *sbi, nid_t nid, bool build)
{
struct f2fs_nm_info *nm_i = NM_I(sbi);
struct free_nid *i;
/* 0 nid should not be used */
if (unlikely(nid == 0))
- return 0;
+ return false;
if (build) {
/* do not add allocated nids */
ne = __lookup_nat_cache(nm_i, nid);
if (ne && (!get_nat_flag(ne, IS_CHECKPOINTED) ||
nat_get_blkaddr(ne) != NULL_ADDR))
- return 0;
+ return false;
}
i = f2fs_kmem_cache_alloc(free_nid_slab, GFP_NOFS);
if (radix_tree_preload(GFP_NOFS)) {
kmem_cache_free(free_nid_slab, i);
- return 0;
+ return true;
}
spin_lock(&nm_i->nid_list_lock);
radix_tree_preload_end();
if (err) {
kmem_cache_free(free_nid_slab, i);
- return 0;
+ return true;
}
- return 1;
+ return true;
}
static void remove_free_nid(struct f2fs_sb_info *sbi, nid_t nid)
kmem_cache_free(free_nid_slab, i);
}
+static void update_free_nid_bitmap(struct f2fs_sb_info *sbi, nid_t nid,
+ bool set, bool build, bool locked)
+{
+ struct f2fs_nm_info *nm_i = NM_I(sbi);
+ unsigned int nat_ofs = NAT_BLOCK_OFFSET(nid);
+ unsigned int nid_ofs = nid - START_NID(nid);
+
+ if (!test_bit_le(nat_ofs, nm_i->nat_block_bitmap))
+ return;
+
+ if (set)
+ __set_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]);
+ else
+ __clear_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]);
+
+ if (!locked)
+ spin_lock(&nm_i->free_nid_lock);
+ if (set)
+ nm_i->free_nid_count[nat_ofs]++;
+ else if (!build)
+ nm_i->free_nid_count[nat_ofs]--;
+ if (!locked)
+ spin_unlock(&nm_i->free_nid_lock);
+}
+
static void scan_nat_page(struct f2fs_sb_info *sbi,
struct page *nat_page, nid_t start_nid)
{
struct f2fs_nm_info *nm_i = NM_I(sbi);
struct f2fs_nat_block *nat_blk = page_address(nat_page);
block_t blk_addr;
+ unsigned int nat_ofs = NAT_BLOCK_OFFSET(start_nid);
int i;
+ if (test_bit_le(nat_ofs, nm_i->nat_block_bitmap))
+ return;
+
+ __set_bit_le(nat_ofs, nm_i->nat_block_bitmap);
+
i = start_nid % NAT_ENTRY_PER_BLOCK;
for (; i < NAT_ENTRY_PER_BLOCK; i++, start_nid++) {
+ bool freed = false;
if (unlikely(start_nid >= nm_i->max_nid))
break;
blk_addr = le32_to_cpu(nat_blk->entries[i].block_addr);
f2fs_bug_on(sbi, blk_addr == NEW_ADDR);
if (blk_addr == NULL_ADDR)
- add_free_nid(sbi, start_nid, true);
+ freed = add_free_nid(sbi, start_nid, true);
+ update_free_nid_bitmap(sbi, start_nid, freed, true, false);
+ }
+}
+
+static void scan_free_nid_bits(struct f2fs_sb_info *sbi)
+{
+ struct f2fs_nm_info *nm_i = NM_I(sbi);
+ struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA);
+ struct f2fs_journal *journal = curseg->journal;
+ unsigned int i, idx;
+
+ down_read(&nm_i->nat_tree_lock);
+
+ for (i = 0; i < nm_i->nat_blocks; i++) {
+ if (!test_bit_le(i, nm_i->nat_block_bitmap))
+ continue;
+ if (!nm_i->free_nid_count[i])
+ continue;
+ for (idx = 0; idx < NAT_ENTRY_PER_BLOCK; idx++) {
+ nid_t nid;
+
+ if (!test_bit_le(idx, nm_i->free_nid_bitmap[i]))
+ continue;
+
+ nid = i * NAT_ENTRY_PER_BLOCK + idx;
+ add_free_nid(sbi, nid, true);
+
+ if (nm_i->nid_cnt[FREE_NID_LIST] >= MAX_FREE_NIDS)
+ goto out;
+ }
+ }
+out:
+ down_read(&curseg->journal_rwsem);
+ for (i = 0; i < nats_in_cursum(journal); i++) {
+ block_t addr;
+ nid_t nid;
+
+ addr = le32_to_cpu(nat_in_journal(journal, i).block_addr);
+ nid = le32_to_cpu(nid_in_journal(journal, i));
+ if (addr == NULL_ADDR)
+ add_free_nid(sbi, nid, true);
+ else
+ remove_free_nid(sbi, nid);
}
+ up_read(&curseg->journal_rwsem);
+ up_read(&nm_i->nat_tree_lock);
}
-static void __build_free_nids(struct f2fs_sb_info *sbi, bool sync)
+static void __build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount)
{
struct f2fs_nm_info *nm_i = NM_I(sbi);
struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA);
if (!sync && !available_free_memory(sbi, FREE_NIDS))
return;
+ if (!mount) {
+ /* try to find free nids in free_nid_bitmap */
+ scan_free_nid_bits(sbi);
+
+ if (nm_i->nid_cnt[FREE_NID_LIST])
+ return;
+ }
+
/* readahead nat pages to be scanned */
ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nid), FREE_NID_PAGES,
META_NAT, true);
nm_i->ra_nid_pages, META_NAT, false);
}
-void build_free_nids(struct f2fs_sb_info *sbi, bool sync)
+void build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount)
{
mutex_lock(&NM_I(sbi)->build_lock);
- __build_free_nids(sbi, sync);
+ __build_free_nids(sbi, sync, mount);
mutex_unlock(&NM_I(sbi)->build_lock);
}
struct free_nid *i = NULL;
retry:
#ifdef CONFIG_F2FS_FAULT_INJECTION
- if (time_to_inject(sbi, FAULT_ALLOC_NID))
+ if (time_to_inject(sbi, FAULT_ALLOC_NID)) {
+ f2fs_show_injection_info(FAULT_ALLOC_NID);
return false;
+ }
#endif
spin_lock(&nm_i->nid_list_lock);
i->state = NID_ALLOC;
__insert_nid_to_list(sbi, i, ALLOC_NID_LIST, false);
nm_i->available_nids--;
+
+ update_free_nid_bitmap(sbi, *nid, false, false, false);
+
spin_unlock(&nm_i->nid_list_lock);
return true;
}
spin_unlock(&nm_i->nid_list_lock);
/* Let's scan nat pages and its caches to get free nids */
- build_free_nids(sbi, true);
+ build_free_nids(sbi, true, false);
goto retry;
}
nm_i->available_nids++;
+ update_free_nid_bitmap(sbi, nid, true, false, false);
+
spin_unlock(&nm_i->nid_list_lock);
if (need_free)
f2fs_put_page(ipage, 1);
}
-void recover_xattr_data(struct inode *inode, struct page *page, block_t blkaddr)
+int recover_xattr_data(struct inode *inode, struct page *page, block_t blkaddr)
{
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
nid_t prev_xnid = F2FS_I(inode)->i_xattr_nid;
nid_t new_xnid = nid_of_node(page);
struct node_info ni;
+ struct page *xpage;
- /* 1: invalidate the previous xattr nid */
if (!prev_xnid)
goto recover_xnid;
- /* Deallocate node address */
+ /* 1: invalidate the previous xattr nid */
get_node_info(sbi, prev_xnid, &ni);
f2fs_bug_on(sbi, ni.blk_addr == NULL_ADDR);
invalidate_blocks(sbi, ni.blk_addr);
set_node_addr(sbi, &ni, NULL_ADDR, false);
recover_xnid:
- /* 2: allocate new xattr nid */
+ /* 2: update xattr nid in inode */
+ remove_free_nid(sbi, new_xnid);
+ f2fs_i_xnid_write(inode, new_xnid);
if (unlikely(!inc_valid_node_count(sbi, inode)))
f2fs_bug_on(sbi, 1);
+ update_inode_page(inode);
+
+ /* 3: update and set xattr node page dirty */
+ xpage = grab_cache_page(NODE_MAPPING(sbi), new_xnid);
+ if (!xpage)
+ return -ENOMEM;
+
+ memcpy(F2FS_NODE(xpage), F2FS_NODE(page), PAGE_SIZE);
- remove_free_nid(sbi, new_xnid);
get_node_info(sbi, new_xnid, &ni);
ni.ino = inode->i_ino;
set_node_addr(sbi, &ni, NEW_ADDR, false);
- f2fs_i_xnid_write(inode, new_xnid);
+ set_page_dirty(xpage);
+ f2fs_put_page(xpage, 1);
- /* 3: update xattr blkaddr */
- refresh_sit_entry(sbi, NEW_ADDR, blkaddr);
- set_node_addr(sbi, &ni, blkaddr, false);
+ return 0;
}
int recover_inode_page(struct f2fs_sb_info *sbi, struct page *page)
ne = __lookup_nat_cache(nm_i, nid);
if (!ne) {
- ne = grab_nat_entry(nm_i, nid);
+ ne = grab_nat_entry(nm_i, nid, true);
node_info_from_raw_nat(&ne->ni, &raw_ne);
}
list_add_tail(&nes->set_list, head);
}
+static void __update_nat_bits(struct f2fs_sb_info *sbi, nid_t start_nid,
+ struct page *page)
+{
+ struct f2fs_nm_info *nm_i = NM_I(sbi);
+ unsigned int nat_index = start_nid / NAT_ENTRY_PER_BLOCK;
+ struct f2fs_nat_block *nat_blk = page_address(page);
+ int valid = 0;
+ int i;
+
+ if (!enabled_nat_bits(sbi, NULL))
+ return;
+
+ for (i = 0; i < NAT_ENTRY_PER_BLOCK; i++) {
+ if (start_nid == 0 && i == 0)
+ valid++;
+ if (nat_blk->entries[i].block_addr)
+ valid++;
+ }
+ if (valid == 0) {
+ __set_bit_le(nat_index, nm_i->empty_nat_bits);
+ __clear_bit_le(nat_index, nm_i->full_nat_bits);
+ return;
+ }
+
+ __clear_bit_le(nat_index, nm_i->empty_nat_bits);
+ if (valid == NAT_ENTRY_PER_BLOCK)
+ __set_bit_le(nat_index, nm_i->full_nat_bits);
+ else
+ __clear_bit_le(nat_index, nm_i->full_nat_bits);
+}
+
static void __flush_nat_entry_set(struct f2fs_sb_info *sbi,
- struct nat_entry_set *set)
+ struct nat_entry_set *set, struct cp_control *cpc)
{
struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA);
struct f2fs_journal *journal = curseg->journal;
* #1, flush nat entries to journal in current hot data summary block.
* #2, flush nat entries to nat page.
*/
- if (!__has_cursum_space(journal, set->entry_cnt, NAT_JOURNAL))
+ if (enabled_nat_bits(sbi, cpc) ||
+ !__has_cursum_space(journal, set->entry_cnt, NAT_JOURNAL))
to_journal = false;
if (to_journal) {
add_free_nid(sbi, nid, false);
spin_lock(&NM_I(sbi)->nid_list_lock);
NM_I(sbi)->available_nids++;
+ update_free_nid_bitmap(sbi, nid, true, false, false);
+ spin_unlock(&NM_I(sbi)->nid_list_lock);
+ } else {
+ spin_lock(&NM_I(sbi)->nid_list_lock);
+ update_free_nid_bitmap(sbi, nid, false, false, false);
spin_unlock(&NM_I(sbi)->nid_list_lock);
}
}
- if (to_journal)
+ if (to_journal) {
up_write(&curseg->journal_rwsem);
- else
+ } else {
+ __update_nat_bits(sbi, start_nid, page);
f2fs_put_page(page, 1);
+ }
f2fs_bug_on(sbi, set->entry_cnt);
/*
* This function is called during the checkpointing process.
*/
-void flush_nat_entries(struct f2fs_sb_info *sbi)
+void flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc)
{
struct f2fs_nm_info *nm_i = NM_I(sbi);
struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA);
* entries, remove all entries from journal and merge them
* into nat entry set.
*/
- if (!__has_cursum_space(journal, nm_i->dirty_nat_cnt, NAT_JOURNAL))
+ if (enabled_nat_bits(sbi, cpc) ||
+ !__has_cursum_space(journal, nm_i->dirty_nat_cnt, NAT_JOURNAL))
remove_nats_in_journal(sbi);
while ((found = __gang_lookup_nat_set(nm_i,
/* flush dirty nats in nat entry set */
list_for_each_entry_safe(set, tmp, &sets, set_list)
- __flush_nat_entry_set(sbi, set);
+ __flush_nat_entry_set(sbi, set, cpc);
up_write(&nm_i->nat_tree_lock);
f2fs_bug_on(sbi, nm_i->dirty_nat_cnt);
}
+static int __get_nat_bitmaps(struct f2fs_sb_info *sbi)
+{
+ struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
+ struct f2fs_nm_info *nm_i = NM_I(sbi);
+ unsigned int nat_bits_bytes = nm_i->nat_blocks / BITS_PER_BYTE;
+ unsigned int i;
+ __u64 cp_ver = cur_cp_version(ckpt);
+ block_t nat_bits_addr;
+
+ if (!enabled_nat_bits(sbi, NULL))
+ return 0;
+
+ nm_i->nat_bits_blocks = F2FS_BYTES_TO_BLK((nat_bits_bytes << 1) + 8 +
+ F2FS_BLKSIZE - 1);
+ nm_i->nat_bits = kzalloc(nm_i->nat_bits_blocks << F2FS_BLKSIZE_BITS,
+ GFP_KERNEL);
+ if (!nm_i->nat_bits)
+ return -ENOMEM;
+
+ nat_bits_addr = __start_cp_addr(sbi) + sbi->blocks_per_seg -
+ nm_i->nat_bits_blocks;
+ for (i = 0; i < nm_i->nat_bits_blocks; i++) {
+ struct page *page = get_meta_page(sbi, nat_bits_addr++);
+
+ memcpy(nm_i->nat_bits + (i << F2FS_BLKSIZE_BITS),
+ page_address(page), F2FS_BLKSIZE);
+ f2fs_put_page(page, 1);
+ }
+
+ cp_ver |= (cur_cp_crc(ckpt) << 32);
+ if (cpu_to_le64(cp_ver) != *(__le64 *)nm_i->nat_bits) {
+ disable_nat_bits(sbi, true);
+ return 0;
+ }
+
+ nm_i->full_nat_bits = nm_i->nat_bits + 8;
+ nm_i->empty_nat_bits = nm_i->full_nat_bits + nat_bits_bytes;
+
+ f2fs_msg(sbi->sb, KERN_NOTICE, "Found nat_bits in checkpoint");
+ return 0;
+}
+
+inline void load_free_nid_bitmap(struct f2fs_sb_info *sbi)
+{
+ struct f2fs_nm_info *nm_i = NM_I(sbi);
+ unsigned int i = 0;
+ nid_t nid, last_nid;
+
+ if (!enabled_nat_bits(sbi, NULL))
+ return;
+
+ for (i = 0; i < nm_i->nat_blocks; i++) {
+ i = find_next_bit_le(nm_i->empty_nat_bits, nm_i->nat_blocks, i);
+ if (i >= nm_i->nat_blocks)
+ break;
+
+ __set_bit_le(i, nm_i->nat_block_bitmap);
+
+ nid = i * NAT_ENTRY_PER_BLOCK;
+ last_nid = (i + 1) * NAT_ENTRY_PER_BLOCK;
+
+ spin_lock(&nm_i->free_nid_lock);
+ for (; nid < last_nid; nid++)
+ update_free_nid_bitmap(sbi, nid, true, true, true);
+ spin_unlock(&nm_i->free_nid_lock);
+ }
+
+ for (i = 0; i < nm_i->nat_blocks; i++) {
+ i = find_next_bit_le(nm_i->full_nat_bits, nm_i->nat_blocks, i);
+ if (i >= nm_i->nat_blocks)
+ break;
+
+ __set_bit_le(i, nm_i->nat_block_bitmap);
+ }
+}
+
static int init_node_manager(struct f2fs_sb_info *sbi)
{
struct f2fs_super_block *sb_raw = F2FS_RAW_SUPER(sbi);
struct f2fs_nm_info *nm_i = NM_I(sbi);
unsigned char *version_bitmap;
- unsigned int nat_segs, nat_blocks;
+ unsigned int nat_segs;
+ int err;
nm_i->nat_blkaddr = le32_to_cpu(sb_raw->nat_blkaddr);
/* segment_count_nat includes pair segment so divide to 2. */
nat_segs = le32_to_cpu(sb_raw->segment_count_nat) >> 1;
- nat_blocks = nat_segs << le32_to_cpu(sb_raw->log_blocks_per_seg);
-
- nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nat_blocks;
+ nm_i->nat_blocks = nat_segs << le32_to_cpu(sb_raw->log_blocks_per_seg);
+ nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nm_i->nat_blocks;
/* not used nids: 0, node, meta, (and root counted as valid node) */
nm_i->available_nids = nm_i->max_nid - sbi->total_valid_node_count -
GFP_KERNEL);
if (!nm_i->nat_bitmap)
return -ENOMEM;
+
+ err = __get_nat_bitmaps(sbi);
+ if (err)
+ return err;
+
+#ifdef CONFIG_F2FS_CHECK_FS
+ nm_i->nat_bitmap_mir = kmemdup(version_bitmap, nm_i->bitmap_size,
+ GFP_KERNEL);
+ if (!nm_i->nat_bitmap_mir)
+ return -ENOMEM;
+#endif
+
+ return 0;
+}
+
+static int init_free_nid_cache(struct f2fs_sb_info *sbi)
+{
+ struct f2fs_nm_info *nm_i = NM_I(sbi);
+
+ nm_i->free_nid_bitmap = f2fs_kvzalloc(nm_i->nat_blocks *
+ NAT_ENTRY_BITMAP_SIZE, GFP_KERNEL);
+ if (!nm_i->free_nid_bitmap)
+ return -ENOMEM;
+
+ nm_i->nat_block_bitmap = f2fs_kvzalloc(nm_i->nat_blocks / 8,
+ GFP_KERNEL);
+ if (!nm_i->nat_block_bitmap)
+ return -ENOMEM;
+
+ nm_i->free_nid_count = f2fs_kvzalloc(nm_i->nat_blocks *
+ sizeof(unsigned short), GFP_KERNEL);
+ if (!nm_i->free_nid_count)
+ return -ENOMEM;
+
+ spin_lock_init(&nm_i->free_nid_lock);
+
return 0;
}
if (err)
return err;
- build_free_nids(sbi, true);
+ err = init_free_nid_cache(sbi);
+ if (err)
+ return err;
+
+ /* load free nid status from nat_bits table */
+ load_free_nid_bitmap(sbi);
+
+ build_free_nids(sbi, true, true);
return 0;
}
}
up_write(&nm_i->nat_tree_lock);
+ kvfree(nm_i->nat_block_bitmap);
+ kvfree(nm_i->free_nid_bitmap);
+ kvfree(nm_i->free_nid_count);
+
kfree(nm_i->nat_bitmap);
+ kfree(nm_i->nat_bits);
+#ifdef CONFIG_F2FS_CHECK_FS
+ kfree(nm_i->nat_bitmap_mir);
+#endif
sbi->nm_info = NULL;
kfree(nm_i);
}
projects / karo-tx-linux.git / blobdiff