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lightnvm: add check after mempool allocation
author
Javier Gonzalez
<javier@javigon.com>
Tue, 12 Jan 2016 06:49:17 +0000
(07:49 +0100)
committer
Jens Axboe
<axboe@fb.com>
Tue, 12 Jan 2016 15:21:16 +0000
(08:21 -0700)
The mempool allocation might fail. Make sure to return error when it
does, instead of causing a kernel panic.
Signed-off-by: Javier Gonzalez <javier@cnexlabs.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
drivers/lightnvm/rrpc.c
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diff --git
a/drivers/lightnvm/rrpc.c
b/drivers/lightnvm/rrpc.c
index
a1e7488
..
f4bc986
100644
(file)
--- a/
drivers/lightnvm/rrpc.c
+++ b/
drivers/lightnvm/rrpc.c
@@
-287,6
+287,8
@@
static int rrpc_move_valid_pages(struct rrpc *rrpc, struct rrpc_block *rblk)
}
page = mempool_alloc(rrpc->page_pool, GFP_NOIO);
+ if (!page)
+ return -ENOMEM;
while ((slot = find_first_zero_bit(rblk->invalid_pages,
nr_pgs_per_blk)) < nr_pgs_per_blk) {