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(parent: 4c7e309) | patch
dm thin: allocate the cell_sort_array dynamically
authorJoe Thornber <ejt@redhat.com>
Fri, 3 Jul 2015 09:22:42 +0000 (10:22 +0100)
committerMike Snitzer <snitzer@redhat.com>
Mon, 6 Jul 2015 01:59:37 +0000 (21:59 -0400)
commita822c83e47d97cdef38c4352e1ef62d9f46cfe98
tree96a7061154282acf52ae7b2145d4669426073880tree | snapshot
parent4c7e309340ff85072e96f529582d159002c36734commit | diff
dm thin: allocate the cell_sort_array dynamically

Given the pool's cell_sort_array holds 8192 pointers it triggers an
order 5 allocation via kmalloc.  This order 5 allocation is prone to
failure as system memory gets more fragmented over time.

Fix this by allocating the cell_sort_array using vmalloc.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org
drivers/md/dm-thin.c diff | blob | history
Domain: System / Kernel; Licenses: GPL-2.0;