f2fs: move mnt_want_write_file after range check

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>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index a68b2cc067bc412cd5837c40bcb3d456c2012f04..10668720a6612b395a3893dee7cf5aeb8140375f 100644 (file)
--- 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)) {