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| author | Mikulas Patocka <mpatocka@redhat.com> | 2015-02-13 16:27:08 +0300 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2015-02-16 19:11:15 +0300 |
| commit | 0f5d8e6ee758f7023e4353cca75d785b2d4f6abe (patch) | |
| tree | 836041a22c3b5f5eb6151f27b7b0dec1714ac5fd /include | |
| parent | dc2676210c425ee8e5cb1bec5bc84d004ddf4179 (diff) | |
| download | linux-0f5d8e6ee758f7023e4353cca75d785b2d4f6abe.tar.xz | |
dm crypt: add 'submit_from_crypt_cpus' option
Make it possible to disable offloading writes by setting the optional
'submit_from_crypt_cpus' table argument.
There are some situations where offloading write bios from the
encryption threads to a single thread degrades performance
significantly.
The default is to offload write bios to the same thread because it
benefits CFQ to have writes submitted using the same IO context.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions