From: Chao Yu chao@kernel.org
stable inclusion from stable-v6.6.33 commit 92b24f04d3e5f452d398bda0b063c92ff3e97c88 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IAD6H2
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit 186e7d71534df4589405925caca5597af7626c12 ]
Previously, we account reserved blocks and compressed blocks into @compr_blocks, then, f2fs_i_compr_blocks_update(,compr_blocks) will update i_compr_blocks incorrectly, fix it.
Meanwhile, for the case all blocks in cluster were reserved, fix to update dn->ofs_in_node correctly.
Fixes: eb8fbaa53374 ("f2fs: compress: fix to check unreleased compressed cluster") Signed-off-by: Chao Yu chao@kernel.org Signed-off-by: Jaegeuk Kim jaegeuk@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Wang Hai wanghai38@huawei.com --- fs/f2fs/file.c | 21 ++++++++++++++------- 1 file changed, 14 insertions(+), 7 deletions(-)
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 82a9a1e7324a..31b7aaf2b39a 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -3627,7 +3627,8 @@ static int reserve_compress_blocks(struct dnode_of_data *dn, pgoff_t count,
while (count) { int compr_blocks = 0; - blkcnt_t reserved; + blkcnt_t reserved = 0; + blkcnt_t to_reserved; int ret;
for (i = 0; i < cluster_size; i++) { @@ -3647,20 +3648,26 @@ static int reserve_compress_blocks(struct dnode_of_data *dn, pgoff_t count, * fails in release_compress_blocks(), so NEW_ADDR * is a possible case. */ - if (blkaddr == NEW_ADDR || - __is_valid_data_blkaddr(blkaddr)) { + if (blkaddr == NEW_ADDR) { + reserved++; + continue; + } + if (__is_valid_data_blkaddr(blkaddr)) { compr_blocks++; continue; } }
- reserved = cluster_size - compr_blocks; + to_reserved = cluster_size - compr_blocks - reserved;
/* for the case all blocks in cluster were reserved */ - if (reserved == 1) + if (to_reserved == 1) { + dn->ofs_in_node += cluster_size; goto next; + }
- ret = inc_valid_block_count(sbi, dn->inode, &reserved, false); + ret = inc_valid_block_count(sbi, dn->inode, + &to_reserved, false); if (unlikely(ret)) return ret;
@@ -3671,7 +3678,7 @@ static int reserve_compress_blocks(struct dnode_of_data *dn, pgoff_t count,
f2fs_i_compr_blocks_update(dn->inode, compr_blocks, true);
- *reserved_blocks += reserved; + *reserved_blocks += to_reserved; next: count -= cluster_size; }