dm thin: allocate the cell_sort_array dynamically

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commit a822c83e47 upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Joe Thornber 2015-07-03 10:22:42 +01:00 • committed by Greg Kroah-Hartman

parent 3fa6173cb7

commit b2ce140833

1 changed files with 12 additions and 1 deletions

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drivers/md/dm-thin.c

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