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| author | Mike Snitzer <snitzer@redhat.com> | 2013-09-13 02:06:12 +0400 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2013-09-23 18:42:24 +0400 |
| commit | e8603136cb04ec2d0c9b4b5be7a071fc003cb399 (patch) | |
| tree | e642b195034f281eeb76de62f5bcf3deb2985de1 /drivers/md/dm.h | |
| parent | f47908269fb53d522a956b78612a0037f5faf8e7 (diff) | |
| download | linux-e8603136cb04ec2d0c9b4b5be7a071fc003cb399.tar.xz | |
dm: add reserved_bio_based_ios module parameter
Allow user to change the number of IOs that are reserved by
bio-based DM's mempools by writing to this file:
/sys/module/dm_mod/parameters/reserved_bio_based_ios
The default value is RESERVED_BIO_BASED_IOS (16). The maximum allowed
value is RESERVED_MAX_IOS (1024).
Export dm_get_reserved_bio_based_ios() for use by DM targets and core
code. Switch to sizing dm-io's mempool and bioset using DM core's
configurable 'reserved_bio_based_ios'.
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Frank Mayhar <fmayhar@google.com>
Diffstat (limited to 'drivers/md/dm.h')
| -rw-r--r-- | drivers/md/dm.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/md/dm.h b/drivers/md/dm.h index 15396501e0b3..1d1ad7b7e527 100644 --- a/drivers/md/dm.h +++ b/drivers/md/dm.h @@ -184,6 +184,7 @@ void dm_free_md_mempools(struct dm_md_mempools *pools); /* * Helpers that are used by DM core */ +unsigned dm_get_reserved_bio_based_ios(void); unsigned dm_get_reserved_rq_based_ios(void); static inline bool dm_message_test_buffer_overflow(char *result, unsigned maxlen) |