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[PATCH] cpuset: fix return without releasing semaphore

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It is wrong to acquire the semaphore and then return from
cpuset_zone_allowed without releasing it.

Signed-off-by: Bob Picco <bob.picco@hp.com>
Acked-by: Paul Jackson <pj@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Bob Picco 2005-11-13 16:06:35 -08:00 committed by Linus Torvalds
parent 3c8d61bcf2
commit 5563e77078
1 changed files with 3 additions and 2 deletions
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5
kernel/cpuset.c
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@ -1809,11 +1809,12 @@ int cpuset_zone_allowed(struct zone *z, gfp_t gfp_mask)
if (gfp_mask & __GFP_HARDWALL) /* If hardwall request, stop here */
return 0;
if (current->flags & PF_EXITING) /* Let dying task have memory */
return 1;
/* Not hardwall and node outside mems_allowed: scan up cpusets */
down(&callback_sem);
if (current->flags & PF_EXITING) /* Let dying task have memory */
return 1;
task_lock(current);
cs = nearest_exclusive_ancestor(current->cpuset);
task_unlock(current);