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Subject[PATCH 4.14 147/164] f2fs: fix to clear FI_NO_PREALLOC
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4.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Chao Yu <yuchao0@huawei.com>


[ Upstream commit 28cfafb73853f0494b06649716687a3ea07681d5 ]

We need to clear FI_NO_PREALLOC flag in error path of f2fs_file_write_iter,
otherwise we will lose the chance to preallocate blocks in latter write()
at one time.

Fixes: dc91de78e5e1 ("f2fs: do not preallocate blocks which has wrong buffer")
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/f2fs/file.c | 1 +
1 file changed, 1 insertion(+)

--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -2697,6 +2697,7 @@ static ssize_t f2fs_file_write_iter(stru

err = f2fs_preallocate_blocks(iocb, from);
if (err) {
+ clear_inode_flag(inode, FI_NO_PREALLOC);
inode_unlock(inode);
return err;
}

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