When the directory fs/ext4 is not correctly created under proc,
the entry under this directory should not be created.
Signed-off-by: Shen Feng <shen@xxxxxxxxxxxxxx>
---
fs/ext4/mballoc.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index b128bdc..3c616f2 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -2639,6 +2639,10 @@ static int ext4_mb_init_per_dev_proc(struct super_block *sb)
struct proc_dir_entry *proc;
char devname[64];
+ if (proc_root_ext4 == NULL) {
+ sbi->s_mb_proc = NULL;
+ return -EINVAL;
+ }
bdevname(sb->s_bdev, devname);
sbi->s_mb_proc = proc_mkdir(devname, proc_root_ext4);
--
1.5.4.1
--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
