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[PATCH 1/2] f2fs: fix to clear FI_NO_PREALLOC

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@xxxxxxxxxx>
 fs/f2fs/file.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 8742c028acc6..41a6f1f70416 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -2750,6 +2750,7 @@ static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
 		err = f2fs_preallocate_blocks(iocb, from);
 		if (err) {
+			clear_inode_flag(inode, FI_NO_PREALLOC);
 			return err;