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blkio: Fix return code for mkdir calls

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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 <[email protected]>
Reviewed-by: KAMEZAWA Hiroyuki <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Ciju Rajan K 2010-08-23 10:56:30 +02:00 • committed by Jens Axboe
commit 96aa1b419d
1 changed files with 1 additions and 1 deletions
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block/blk-cgroup.c
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@ -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)