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authorCiju Rajan K <ciju@linux.vnet.ibm.com>2010-08-23 10:56:30 +0200
committerJens Axboe <jaxboe@fusionio.com>2010-08-23 10:56:30 +0200
commit96aa1b419d47286db446f292cf898bb1a8b27f24 (patch)
tree1b7a7c5c8131374396df69fd52d02de5de06e978
parent9ee47476d6734c9deb9ae9ab05d963302f6b6150 (diff)
blkio: Fix return code for mkdir calls
If the cgroup hierarchy for blkio control groups is deeper than two levels, kernel should not allow the creation of further levels. mkdir system call does not except EINVAL as a return value. This patch replaces EINVAL with more appropriate EPERM Signed-off-by: Ciju Rajan K <ciju@linux.vnet.ibm.com> Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
-rw-r--r--block/blk-cgroup.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c
index a6809645d212..2fef1ef931a0 100644
--- a/block/blk-cgroup.c
+++ b/block/blk-cgroup.c
@@ -966,7 +966,7 @@ blkiocg_create(struct cgroup_subsys *subsys, struct cgroup *cgroup)
/* Currently we do not support hierarchy deeper than two level (0,1) */
if (parent != cgroup->top_cgroup)
- return ERR_PTR(-EINVAL);
+ return ERR_PTR(-EPERM);
blkcg = kzalloc(sizeof(*blkcg), GFP_KERNEL);
if (!blkcg)

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