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| author | Mikulas Patocka <mpatocka@redhat.com> | 2013-10-31 13:55:45 -0400 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2013-10-31 13:55:45 -0400 |
| commit | f36afb3957353d2529cb2b00f78fdccd14fc5e9c (patch) | |
| tree | 0c2e9f902291df81d42c15c6b5c237c810ff3a51 /drivers/md/dm-mpath.c | |
| parent | 61e6cfa80de5760bbe406f4e815b7739205754d2 (diff) | |
| download | kernel_replicant_linux-f36afb3957353d2529cb2b00f78fdccd14fc5e9c.tar.gz kernel_replicant_linux-f36afb3957353d2529cb2b00f78fdccd14fc5e9c.tar.bz2 kernel_replicant_linux-f36afb3957353d2529cb2b00f78fdccd14fc5e9c.zip | |
dm: allocate buffer for messages with small number of arguments using GFP_NOIO
dm-mpath and dm-thin must process messages even if some device is
suspended, so we allocate argv buffer with GFP_NOIO. These messages have
a small fixed number of arguments.
On the other hand, dm-switch needs to process bulk data using messages
so excessive use of GFP_NOIO could cause trouble.
The patch also lowers the default number of arguments from 64 to 8, so
that there is smaller load on GFP_NOIO allocations.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Acked-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md/dm-mpath.c')
0 files changed, 0 insertions, 0 deletions