From 28cfafb73853f0494b06649716687a3ea07681d5 Mon Sep 17 00:00:00 2001
From: Chao Yu <yuchao0@huawei.com>
Date: Mon, 13 Nov 2017 17:32:39 +0800
Subject: [PATCH] f2fs: fix to clear FI_NO_PREALLOC
Git-commit: 28cfafb73853f0494b06649716687a3ea07681d5
Patch-mainline: v4.15-rc1
References: bsc#1052766

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>
Acked-by: Jan Kara <jack@suse.cz>

---
 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);
 			inode_unlock(inode);
 			return err;
 		}
-- 
2.12.3