[PATCH 6.6 157/322] f2fs: fix to check return value of f2fs_reserve_new_block()

Greg Kroah-Hartman
2024-02-03T04:13:30Z

From: Chao Yu <chao@kernel.org>

[ Upstream commit 956fa1ddc132e028f3b7d4cf17e6bfc8cb36c7fd ]

Let's check return value of f2fs_reserve_new_block() in do_recover_data()
rather than letting it fails silently.

Also refactoring check condition on return value of f2fs_reserve_new_block()
as below:
- trigger f2fs_bug_on() only for ENOSPC case;
- use do-while statement to avoid redundant codes;

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/recovery.c | 23 +++++++++++++++++------
1 file changed, 17 insertions(+), 6 deletions(-)

diff --git a/fs/f2fs/recovery.c b/fs/f2fs/recovery.c
index 7be60df277a5..f0de36ef73c2 100644
--- a/fs/f2fs/recovery.c
+++ b/fs/f2fs/recovery.c
@@ -712,7 +712,16 @@ static int do_recover_data(struct f2fs_sb_info *sbi, struct inode *inode,
*/
if (dest == NEW_ADDR) {
f2fs_truncate_data_blocks_range(&dn, 1);
- f2fs_reserve_new_block(&dn);
+ do {
+ err = f2fs_reserve_new_block(&dn);
+ if (err == -ENOSPC) {
+ f2fs_bug_on(sbi, 1);
+ break;
+ }
+ } while (err &&
+ IS_ENABLED(CONFIG_F2FS_FAULT_INJECTION));
+ if (err)
+ goto err;
continue;
}

@@ -720,12 +729,14 @@ static int do_recover_data(struct f2fs_sb_info *sbi, struct inode *inode,
if (f2fs_is_valid_blkaddr(sbi, dest, META_POR)) {

if (src == NULL_ADDR) {
- err = f2fs_reserve_new_block(&dn);
- while (err &&
- IS_ENABLED(CONFIG_F2FS_FAULT_INJECTION))
+ do {
err = f2fs_reserve_new_block(&dn);
- /* We should not get -ENOSPC */
- f2fs_bug_on(sbi, err);
+ if (err == -ENOSPC) {
+ f2fs_bug_on(sbi, 1);
+ break;
+ }
+ } while (err &&
+ IS_ENABLED(CONFIG_F2FS_FAULT_INJECTION));
if (err)
goto err;
}
--
2.43.0