6.6-stable review patch. If anyone has any objections, please let me know.
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From: Chao Yu chao@kernel.org
[ Upstream commit 043c832371cd9023fbd725138ddc6c7f288dc469 ]
If inc_valid_block_count() can not allocate all requested blocks, it needs to release block count in .total_valid_block_count and resevation blocks in inode.
Fixes: 54607494875e ("f2fs: compress: fix to avoid inconsistence bewteen i_blocks and dnode") Signed-off-by: Chao Yu chao@kernel.org Signed-off-by: Jaegeuk Kim jaegeuk@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- fs/f2fs/f2fs.h | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-)
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index c90f6f9855c8e..f1fbfa7fb279e 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -2296,7 +2296,7 @@ static inline void f2fs_i_blocks_write(struct inode *, block_t, bool, bool); static inline int inc_valid_block_count(struct f2fs_sb_info *sbi, struct inode *inode, blkcnt_t *count, bool partial) { - blkcnt_t diff = 0, release = 0; + long long diff = 0, release = 0; block_t avail_user_block_count; int ret;
@@ -2316,26 +2316,27 @@ static inline int inc_valid_block_count(struct f2fs_sb_info *sbi, percpu_counter_add(&sbi->alloc_valid_block_count, (*count));
spin_lock(&sbi->stat_lock); - sbi->total_valid_block_count += (block_t)(*count); - avail_user_block_count = get_available_block_count(sbi, inode, true);
- if (unlikely(sbi->total_valid_block_count > avail_user_block_count)) { + avail_user_block_count = get_available_block_count(sbi, inode, true); + diff = (long long)sbi->total_valid_block_count + *count - + avail_user_block_count; + if (unlikely(diff > 0)) { if (!partial) { spin_unlock(&sbi->stat_lock); + release = *count; goto enospc; } - - diff = sbi->total_valid_block_count - avail_user_block_count; if (diff > *count) diff = *count; *count -= diff; release = diff; - sbi->total_valid_block_count -= diff; if (!*count) { spin_unlock(&sbi->stat_lock); goto enospc; } } + sbi->total_valid_block_count += (block_t)(*count); + spin_unlock(&sbi->stat_lock);
if (unlikely(release)) {