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| author | NeilBrown <neilb@suse.de> | 2011-04-18 10:25:42 +0200 |
|---|---|---|
| committer | NeilBrown <neilb@suse.de> | 2011-04-18 10:25:42 +0200 |
| commit | 97658cdd3af7d01461874c93b89afa4a2465e7c6 (patch) | |
| tree | d4e2f930850eb3981307a3eec8c86399dcebf68a /drivers/md/raid5.c | |
| parent | md - remove old plugging code. (diff) | |
| download | linux-97658cdd3af7d01461874c93b89afa4a2465e7c6.tar.xz linux-97658cdd3af7d01461874c93b89afa4a2465e7c6.zip | |
md: provide generic support for handling unplug callbacks.
When an md device adds a request to a queue, it can call
mddev_check_plugged.
If this succeeds then we know that the md thread will be woken up
shortly, and ->plug_cnt will be non-zero until then, so some
processing can be delayed.
If it fails, then no unplug callback is expected and the make_request
function needs to do whatever is required to make the request happen.
Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to '')
0 files changed, 0 insertions, 0 deletions