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| author | Jens Axboe <jens.axboe@oracle.com> | 2007-04-02 10:06:42 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@nelson.home.kernel.dk> | 2007-04-30 09:08:17 +0200 |
| commit | 5972511b77809cb7c9ccdb79b825c54921c5c546 (patch) | |
| tree | 8dec5821badf9750be04f339f0f621fab2114c8a /drivers | |
| parent | b9099ff63c75216d6ca10bce5a1abcd9293c27e6 (diff) | |
| download | linux-3.10-5972511b77809cb7c9ccdb79b825c54921c5c546.tar.gz linux-3.10-5972511b77809cb7c9ccdb79b825c54921c5c546.tar.bz2 linux-3.10-5972511b77809cb7c9ccdb79b825c54921c5c546.zip | |
[BLOCK] Don't pin lots of memory in mempools
Currently we scale the mempool sizes depending on memory installed
in the machine, except for the bio pool itself which sits at a fixed
256 entry pre-allocation.
There's really no point in "optimizing" this OOM path, we just need
enough preallocated to make progress. A single unit is enough, lets
scale it down to 2 just to be on the safe side.
This patch saves ~150kb of pinned kernel memory on a 32-bit box.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/md/dm-crypt.c | 2 | ||||
| -rw-r--r-- | drivers/md/dm-io.c | 2 | ||||
| -rw-r--r-- | drivers/md/dm.c | 2 | ||||
| -rw-r--r-- | drivers/scsi/scsi_lib.c | 2 |
4 files changed, 4 insertions, 4 deletions
diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c index 4c2471ee054..d8121234c34 100644 --- a/drivers/md/dm-crypt.c +++ b/drivers/md/dm-crypt.c @@ -867,7 +867,7 @@ static int crypt_ctr(struct dm_target *ti, unsigned int argc, char **argv) goto bad4; } - cc->bs = bioset_create(MIN_IOS, MIN_IOS, 4); + cc->bs = bioset_create(MIN_IOS, MIN_IOS); if (!cc->bs) { ti->error = "Cannot allocate crypt bioset"; goto bad_bs; diff --git a/drivers/md/dm-io.c b/drivers/md/dm-io.c index 4eb73d39521..8bdc8a87b24 100644 --- a/drivers/md/dm-io.c +++ b/drivers/md/dm-io.c @@ -60,7 +60,7 @@ static int resize_pool(unsigned int new_ios) if (!_io_pool) return -ENOMEM; - _bios = bioset_create(16, 16, 4); + _bios = bioset_create(16, 16); if (!_bios) { mempool_destroy(_io_pool); _io_pool = NULL; diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 3668b170ea6..11a98df298e 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -1012,7 +1012,7 @@ static struct mapped_device *alloc_dev(int minor) if (!md->tio_pool) goto bad3; - md->bs = bioset_create(16, 16, 4); + md->bs = bioset_create(16, 16); if (!md->bs) goto bad_no_bioset; diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 9f7482d0b59..05d79af5ab9 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -31,7 +31,7 @@ #define SG_MEMPOOL_NR ARRAY_SIZE(scsi_sg_pools) -#define SG_MEMPOOL_SIZE 32 +#define SG_MEMPOOL_SIZE 2 struct scsi_host_sg_pool { size_t size; |