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Subject[PATCH AUTOSEL for 4.15 069/189] f2fs: fix to update last_disk_size correctly
Date
From: Chao Yu <yuchao0@huawei.com>

[ Upstream commit eb4497975e82448746bb7de3d13b743b7145aed7 ]

This patch fixes to update last_disk_size only when writing out page
successfully.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
---
fs/f2fs/data.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 516fa0d3ff9c..3399ddb723dd 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -1571,10 +1571,14 @@ write:
}
}

- down_write(&F2FS_I(inode)->i_sem);
- if (F2FS_I(inode)->last_disk_size < psize)
- F2FS_I(inode)->last_disk_size = psize;
- up_write(&F2FS_I(inode)->i_sem);
+ if (err) {
+ file_set_keep_isize(inode);
+ } else {
+ down_write(&F2FS_I(inode)->i_sem);
+ if (F2FS_I(inode)->last_disk_size < psize)
+ F2FS_I(inode)->last_disk_size = psize;
+ up_write(&F2FS_I(inode)->i_sem);
+ }

done:
if (err && err != -ENOENT)
--
2.15.1
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