mm/swapfile.c: use kvzalloc for swap_info_struct allocation
commit113737cc318036e99ce33d7a26ac0e3d76b829ee
authorVasily Averin <vvs@virtuozzo.com>
Fri, 16 Nov 2018 23:08:11 +0000 (16 15:08 -0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 21 Nov 2018 08:19:24 +0000 (21 09:19 +0100)
treed5c3e8a7ff6a63d4c4eb5a52652804718a126ffb
parent7b46e532dec0a7753e59d00b3329d89b7ce3104d
mm/swapfile.c: use kvzalloc for swap_info_struct allocation

commit 873d7bcfd066663e3e50113dc4a0de19289b6354 upstream.

Commit a2468cc9bfdf ("swap: choose swap device according to numa node")
changed 'avail_lists' field of 'struct swap_info_struct' to an array.
In popular linux distros it increased size of swap_info_struct up to 40
Kbytes and now swap_info_struct allocation requires order-4 page.
Switch to kvzmalloc allows to avoid unexpected allocation failures.

Link: http://lkml.kernel.org/r/fc23172d-3c75-21e2-d551-8b1808cbe593@virtuozzo.com
Fixes: a2468cc9bfdf ("swap: choose swap device according to numa node")
Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
Acked-by: Aaron Lu <aaron.lu@intel.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Huang Ying <ying.huang@intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
mm/swapfile.c