Revert "dm cache: do not wake_worker() in free_migration()"

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This reverts commit 386cb7cdee.

Taking the wake_worker() out of free_migration() will slow writeback
dramatically, and hence adaptability.

Say we have 10k blocks that need writing back, but are only able to
issue 5 concurrently due to the migration bandwidth: it's imperative
that we wake_worker() immediately after migration completion; waiting
for the next 1 second wake up (via do_waker) means it'll take a long
time to write that all back.

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

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Mike Snitzer 2015-07-29 14:11:28 -04:00

parent 6ed443c07f

commit 3508e6590d

1 changed files with 1 additions and 0 deletions

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drivers/md/dm-cache-target.c

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