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| author | Nicholas Bellinger <nab@linux-iscsi.org> | 2014-01-20 03:36:24 +0000 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2014-01-25 06:58:52 +0000 |
| commit | 555b270e25b0279b98083518a85f4b1da144a181 (patch) | |
| tree | 01cb1c9e3c65deb02c41ed45fa9ad69902274e2c /drivers/target | |
| parent | 6f6b5d1ec56acdeab0503d2b823f6f88a0af493e (diff) | |
| download | linux-stable-555b270e25b0279b98083518a85f4b1da144a181.tar.gz linux-stable-555b270e25b0279b98083518a85f4b1da144a181.tar.bz2 linux-stable-555b270e25b0279b98083518a85f4b1da144a181.zip | |
iscsi-target: Fix connection reset hang with percpu_ida_alloc
This patch addresses a bug where connection reset would hang
indefinately once percpu_ida_alloc() was starved for tags, due
to the fact that it always assumed uninterruptible sleep mode.
So now make percpu_ida_alloc() check for signal_pending_state() for
making interruptible sleep optional, and convert iscsit_allocate_cmd()
to set TASK_INTERRUPTIBLE for GFP_KERNEL, or TASK_RUNNING for
GFP_ATOMIC.
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: 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')
| -rw-r--r-- | drivers/target/iscsi/iscsi_target_util.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/target/iscsi/iscsi_target_util.c b/drivers/target/iscsi/iscsi_target_util.c index 9b8e1db1257b..5477ecabc00e 100644 --- a/drivers/target/iscsi/iscsi_target_util.c +++ b/drivers/target/iscsi/iscsi_target_util.c @@ -156,7 +156,7 @@ struct iscsi_cmd *iscsit_allocate_cmd(struct iscsi_conn *conn, gfp_t gfp_mask) { struct iscsi_cmd *cmd; struct se_session *se_sess = conn->sess->se_sess; - int size, tag, state = (gfp_mask & __GFP_WAIT) ? TASK_UNINTERRUPTIBLE : + int size, tag, state = (gfp_mask & __GFP_WAIT) ? TASK_INTERRUPTIBLE : TASK_RUNNING; tag = percpu_ida_alloc(&se_sess->sess_tag_pool, state); |