Greg Edwards d0e21e43cd block: bvec_nr_vecs() returns value for wrong slab
[ Upstream commit d6c02a9beb67f13d5f14f23e72fa9981e8b84477 ]

In commit ed996a52c868 ("block: simplify and cleanup bvec pool
handling"), the value of the slab index is incremented by one in
bvec_alloc() after the allocation is done to indicate an index value of
0 does not need to be later freed.

bvec_nr_vecs() was not updated accordingly, and thus returns the wrong
value.  Decrement idx before performing the lookup.

Fixes: ed996a52c868 ("block: simplify and cleanup bvec pool handling")
Signed-off-by: Greg Edwards <gedwards@ddn.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-15 09:46:51 +02:00
..
2018-07-27 12:51:00 -07:00
2018-05-29 08:59:21 -06:00
2018-06-17 05:37:55 +09:00
2018-09-09 10:32:29 +02:00
2018-05-31 10:50:54 -04:00
2018-06-15 18:10:01 -03:00