diff options
Diffstat (limited to 'fs/f2fs/data.c')
| -rw-r--r-- | fs/f2fs/data.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 67b3a99e03d5..e3be4be3a6d8 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -572,6 +572,39 @@ static unsigned int __free_extent_tree(struct f2fs_sb_info *sbi, return count - et->count; } +static void f2fs_init_extent_tree(struct inode *inode, + struct f2fs_extent *i_ext) +{ + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + struct extent_tree *et; + struct extent_node *en; + struct extent_info ei; + + if (le32_to_cpu(i_ext->len) < F2FS_MIN_EXTENT_LEN) + return; + + et = __grab_extent_tree(inode); + + write_lock(&et->lock); + if (et->count) + goto out; + + set_extent_info(&ei, le32_to_cpu(i_ext->fofs), + le32_to_cpu(i_ext->blk), le32_to_cpu(i_ext->len)); + + en = __insert_extent_tree(sbi, et, &ei, NULL); + if (en) { + et->cached_en = en; + + spin_lock(&sbi->extent_lock); + list_add_tail(&en->list, &sbi->extent_list); + spin_unlock(&sbi->extent_lock); + } +out: + write_unlock(&et->lock); + atomic_dec(&et->refcount); +} + static bool f2fs_lookup_extent_tree(struct inode *inode, pgoff_t pgofs, struct extent_info *ei) { @@ -782,6 +815,16 @@ out: return; } +void f2fs_init_extent_cache(struct inode *inode, struct f2fs_extent *i_ext) +{ + if (test_opt(F2FS_I_SB(inode), EXTENT_CACHE)) + f2fs_init_extent_tree(inode, i_ext); + + write_lock(&F2FS_I(inode)->ext_lock); + get_extent_info(&F2FS_I(inode)->ext, *i_ext); + write_unlock(&F2FS_I(inode)->ext_lock); +} + static bool f2fs_lookup_extent_cache(struct inode *inode, pgoff_t pgofs, struct extent_info *ei) { |