Re: block: use kmalloc alignment for bio slab

2014-04-07 Thread Jens Axboe
On 04/07/2014 12:15 PM, Mike Snitzer wrote: On Wed, Apr 02 2014 at 2:04pm -0400, Mike Snitzer wrote: From: Mikulas Patocka Various subsystems can ask the bio subsystem to create a bio slab cache with some free space before the bio. This free space can be used for any purpose. Device mappe

Re: block: use kmalloc alignment for bio slab

2014-04-07 Thread Mike Snitzer
On Wed, Apr 02 2014 at 2:04pm -0400, Mike Snitzer wrote: > From: Mikulas Patocka > > Various subsystems can ask the bio subsystem to create a bio slab cache > with some free space before the bio. This free space can be used for any > purpose. Device mapper uses this per-bio-data feature to p