[PATCH v2] f2fs: move mnt_want_write_file after range check

[Yunlei He <heyunlei@huawei.com>]

This patch move mnt_want_write_file after range check,
it's needless to check arguments with it.

Signed-off-by: Yunlei He <heyunlei@huawei.com>
---
 fs/f2fs/file.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 16dad2b..25c5364 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -2061,15 +2061,15 @@ static int f2fs_ioc_gc_range(struct file *filp, unsigned long arg)
 	if (f2fs_readonly(sbi->sb))
 		return -EROFS;
 
+	end = range.start + range.len;
+	if (range.start < MAIN_BLKADDR(sbi) || end >= MAX_BLKADDR(sbi)) {
+		return -EINVAL;
+	}
+
 	ret = mnt_want_write_file(filp);
 	if (ret)
 		return ret;
 
-	end = range.start + range.len;
-	if (range.start < MAIN_BLKADDR(sbi) || end >= MAX_BLKADDR(sbi)) {
-		ret = -EINVAL;
-		goto out;
-	}
 do_more:
 	if (!range.sync) {
 		if (!mutex_trylock(&sbi->gc_mutex)) {
-- 
1.9.1


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