korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-12-16 07:24:39 +08:00
Code Issues Packages Projects Releases Wiki Activity

infiniband: i40iw: Replace GFP_ATOMIC with GFP_KERNEL in i40iw_make_listen_node

Browse Source 
i40iw_make_listen_node() is never called in atomic context.

i40iw_make_listen_node() is only called by i40iw_create_listen, which is
set as ".create_listen" in struct iw_cm_verbs.

Despite never getting called from atomic context,
i40iw_make_listen_node() calls kzalloc() with GFP_ATOMIC,
which does not sleep for allocation.
GFP_ATOMIC is not necessary and can be replaced with GFP_KERNEL,
which can sleep and improve the possibility of sucessful allocation.

This is found by a static analysis tool named DCNS written by myself.
And I also manually check it.

Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Acked-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Jia-Ju Bai 2018-04-11 15:32:48 +08:00 committed by Jason Gunthorpe
parent 39e487faaf
commit f9af873014
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/infiniband/hw/i40iw/i40iw_cm.c
View File

@ -2872,7 +2872,7 @@ static struct i40iw_cm_listener *i40iw_make_listen_node(
if (!listener) {
/* create a CM listen node (1/2 node to compare incoming traffic to) */
listener = kzalloc(sizeof(*listener), GFP_ATOMIC);
listener = kzalloc(sizeof(*listener), GFP_KERNEL);
if (!listener)
return NULL;
cm_core->stats_listen_nodes_created++;