dm cache metadata: add "metadata2" feature

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If "metadata2" is provided as a table argument when creating/loading a
cache target a more compact metadata format, with separate dirty bits,
is used.  "metadata2" improves speed of shutting down a cache target.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>

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Joe Thornber 2016-09-22 06:15:21 -04:00 • committed by Mike Snitzer

parent ae4a46a1f6

commit 629d0a8a1a

4 changed files with 278 additions and 53 deletions

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4

Documentation/device-mapper/cache.txt

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278

drivers/md/dm-cache-metadata.c

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11

drivers/md/dm-cache-metadata.h

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38

drivers/md/dm-cache-target.c

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