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| author |   Kent Overstreet <kmo@daterainc.com> | 2014-01-19 08:26:37 +0000 |
|---|---|---|
| committer |   Nicholas Bellinger <nab@linux-iscsi.org> | 2014-01-23 20:17:18 +0000 |
| commit | 6f6b5d1ec56acdeab0503d2b823f6f88a0af493e (patch) | |
| tree | 7a95dca01cc9ddd652ccbfba4df9d5c30abda549 /drivers/target/tcm_fc | |
| parent | iscsi-target: Pre-allocate more tags to avoid ack starvation (diff) | |
| download | linux-dev-6f6b5d1ec56acdeab0503d2b823f6f88a0af493e.tar.xz linux-dev-6f6b5d1ec56acdeab0503d2b823f6f88a0af493e.zip | |
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/target/tcm_fc')
| -rw-r--r-- | drivers/target/tcm_fc/tfc_cmd.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/target/tcm_fc/tfc_cmd.c b/drivers/target/tcm_fc/tfc_cmd.c index 479ec5621a4e..8b2c1aaf81de 100644 --- a/drivers/target/tcm_fc/tfc_cmd.c +++ b/drivers/target/tcm_fc/tfc_cmd.c @@ -438,7 +438,7 @@ static void ft_recv_cmd(struct ft_sess *sess, struct fc_frame *fp) struct se_session *se_sess = sess->se_sess; int tag; - 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) goto busy; |