Re: [dm-devel] [PATCH] dm: Make MIN_IOS, et al, tunable via sysctl.

2013-08-20 Thread Frank Mayhar
On Tue, 2013-08-20 at 17:47 -0400, Mikulas Patocka wrote: > > On Tue, 20 Aug 2013, Frank Mayhar wrote: > > > On Tue, 2013-08-20 at 17:22 -0400, Mikulas Patocka wrote: > > > On Fri, 16 Aug 2013, Frank Mayhar wrote: > > > > The device mapper and some of its modules allocate memory pools at > > > >

Re: [dm-devel] [PATCH] dm: Make MIN_IOS, et al, tunable via sysctl.

2013-08-20 Thread Mikulas Patocka
On Tue, 20 Aug 2013, Frank Mayhar wrote: > On Tue, 2013-08-20 at 17:22 -0400, Mikulas Patocka wrote: > > On Fri, 16 Aug 2013, Frank Mayhar wrote: > > > The device mapper and some of its modules allocate memory pools at > > > various points when setting up a device. In some cases, these pools ar

Re: [dm-devel] [PATCH] dm: Make MIN_IOS, et al, tunable via sysctl.

2013-08-20 Thread Frank Mayhar
On Tue, 2013-08-20 at 17:22 -0400, Mikulas Patocka wrote: > On Fri, 16 Aug 2013, Frank Mayhar wrote: > > The device mapper and some of its modules allocate memory pools at > > various points when setting up a device. In some cases, these pools are > > fairly large, for example the multipath module

Re: [dm-devel] [PATCH] dm: Make MIN_IOS, et al, tunable via sysctl.

2013-08-20 Thread Mikulas Patocka
On Fri, 16 Aug 2013, Frank Mayhar wrote: > The device mapper and some of its modules allocate memory pools at > various points when setting up a device. In some cases, these pools are > fairly large, for example the multipath module allocates a 256-entry > pool and the dm itself allocates three

Re: [dm-devel] [PATCH] dm: Make MIN_IOS, et al, tunable via sysctl.

2013-08-17 Thread Alasdair G Kergon
On Fri, Aug 16, 2013 at 03:55:21PM -0700, Frank Mayhar wrote: > This patch fixes that by changing the hardcoded MIN_IOS (and certain > other) #defines in dm-crypt, dm-io, dm-mpath, dm-snap and dm itself to > sysctl-modifiable values. This lets us change the size of these pools > on the fly, we can

Re: [PATCH] dm: Make MIN_IOS, et al, tunable via sysctl.

2013-08-16 Thread Frank Mayhar
Sorry for the repeats, mailer issues (was supposed to go to dm-devel). -- Frank Mayhar 310-460-4042 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html P

Re: [PATCH] dm: Make MIN_IOS, et al, tunable via sysctl.

2013-08-13 Thread Frank Mayhar
Ping? Has anyone glanced at this? On Fri, 2013-08-09 at 10:48 -0700, Frank Mayhar wrote: > The device mapper and some of its modules allocate memory pools at > various points when setting up a device. In some cases, these pools are > fairly large, for example the multipath module allocates a 256

[PATCH] dm: Make MIN_IOS, et al, tunable via sysctl.

2013-08-09 Thread Frank Mayhar
The device mapper and some of its modules allocate memory pools at various points when setting up a device. In some cases, these pools are fairly large, for example the multipath module allocates a 256-entry pool and the dm itself allocates three of that size. In a memory-constrained environment