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authorKent Overstreet <kmo@daterainc.com>2014-01-19 08:26:37 +0000
committerNicholas Bellinger <nab@linux-iscsi.org>2014-01-23 20:17:18 +0000
commit6f6b5d1ec56acdeab0503d2b823f6f88a0af493e (patch)
tree7a95dca01cc9ddd652ccbfba4df9d5c30abda549 /drivers/vhost
parent4a4caa29f1abcb14377e05d57c0793d338fb945d (diff)
downloadop-kernel-dev-6f6b5d1ec56acdeab0503d2b823f6f88a0af493e.zip
op-kernel-dev-6f6b5d1ec56acdeab0503d2b823f6f88a0af493e.tar.gz
percpu_ida: Make percpu_ida_alloc + callers accept task state bitmask
This patch changes percpu_ida_alloc() + callers to accept task state bitmask for prepare_to_wait() for code like target/iscsi that needs it for interruptible sleep, that is provided in a subsequent patch. It now expects TASK_UNINTERRUPTIBLE when the caller is able to sleep waiting for a new tag, or TASK_RUNNING when the caller cannot sleep, and is forced to return a negative value when no tags are available. v2 changes: - Include blk-mq + tcm_fc + vhost/scsi + target/iscsi changes - Drop signal_pending_state() call v3 changes: - Only call prepare_to_wait() + finish_wait() when != TASK_RUNNING (PeterZ) Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: Kent Overstreet <kmo@daterainc.com> Cc: <stable@vger.kernel.org> #3.12+ Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/vhost')
-rw-r--r--drivers/vhost/scsi.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/vhost/scsi.c b/drivers/vhost/scsi.c
index 84488a8..2d084fb 100644
--- a/drivers/vhost/scsi.c
+++ b/drivers/vhost/scsi.c
@@ -728,7 +728,7 @@ vhost_scsi_get_tag(struct vhost_virtqueue *vq,
}
se_sess = tv_nexus->tvn_se_sess;
- tag = percpu_ida_alloc(&se_sess->sess_tag_pool, GFP_ATOMIC);
+ tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
if (tag < 0) {
pr_err("Unable to obtain tag for tcm_vhost_cmd\n");
return ERR_PTR(-ENOMEM);
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