lkml.org 
[lkml]   [2014]   [Apr]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
SubjectRE: [PATCH v2] [SCSI] bfa: allocate memory with GFP_ATOMIC in spinlock context
Date
Thanks for the patch.
Acked-by: Anil Gurumurthy <anil.gurumurthy@qlogic.com>

-----Original Message-----
From: Alexey Khoroshilov [mailto:khoroshilov@ispras.ru]
Sent: 18 April 2014 13:29
To: Anil Gurumurthy; Sudarsana Kalluru
Cc: Alexey Khoroshilov; James E.J. Bottomley; linux-scsi; linux-kernel; ldv-project@linuxtesting.org
Subject: [PATCH v2] [SCSI] bfa: allocate memory with GFP_ATOMIC in spinlock context

bfa_fcb_pbc_vport_create() is called only from bfa_fcs_pbc_vport_init(), that is called only from bfad_drv_start() with bfad_lock spinlock held.
So the patch replaces GFP_KERNEL with GFP_ATOMIC to avoid sleeping in atomic spinlock context.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
---
drivers/scsi/bfa/bfad.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/bfa/bfad.c b/drivers/scsi/bfa/bfad.c index cc0fbcdc5192..7593b7c1d336 100644
--- a/drivers/scsi/bfa/bfad.c
+++ b/drivers/scsi/bfa/bfad.c
@@ -507,7 +507,7 @@ bfa_fcb_pbc_vport_create(struct bfad_s *bfad, struct bfi_pbc_vport_s pbc_vport)
struct bfad_vport_s *vport;
int rc;

- vport = kzalloc(sizeof(struct bfad_vport_s), GFP_KERNEL);
+ vport = kzalloc(sizeof(struct bfad_vport_s), GFP_ATOMIC);
if (!vport) {
bfa_trc(bfad, 0);
return;
--
1.8.3.2

________________________________
This message and any attached documents contain information from QLogic Corporation or its wholly-owned subsidiaries that may be confidential. If you are not the intended recipient, you may not read, copy, distribute, or use this information. If you have received this transmission in error, please notify the sender immediately by reply e-mail and then delete this message.


\
 
 \ /
  Last update: 2014-04-30 11:21    [W:0.043 / U:0.148 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site