f2fs: fix to clear FI_NO_PREALLOC

[ 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>

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 6ce4678723762adeeb75366dc853e52af1760ead..b8372095ba0a6e1b906b1a7ff40b46e3beb2d4c0 100644 (file)
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -2697,6 +2697,7 @@ 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);
                        inode_unlock(inode);
                        return err;
                }