Commit 80cd1757 authored Aug 30, 2017 by NeilBrown Committed by Mike Snitzer Dec 13, 2017

dm crypt: remove BIOSET_NEED_RESCUER flag



The BIOSET_NEED_RESCUER flag is only needed when a make_request_fn might
do two allocations from the one bioset, and the second one could block
until the first bio completes.

dm-crypt does allocate from this bioset inside the dm make_request_fn,
but does so using GFP_NOWAIT so that the allocation will not block.

So BIOSET_NEED_RESCUER is not needed.

Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>

parent c06b3e58

drivers/md/dm-crypt.c

+1 −2

Original line number	Diff line number	Diff line
		@@ -2697,8 +2697,7 @@ static int crypt_ctr(struct dm_target ti, unsigned int argc, char *argv)
		goto bad;
		}

		cc->bs = bioset_create(MIN_IOS, 0, (BIOSET_NEED_BVECS \|
		BIOSET_NEED_RESCUER));
		cc->bs = bioset_create(MIN_IOS, 0, BIOSET_NEED_BVECS);
		if (!cc->bs) {
		ti->error = "Cannot allocate crypt bioset";
		goto bad;