| commit | 7c13edc87510f665da3094174e1fd633e06649f4 | |
| author | NeilBrown <neilb@suse.de> | |
| Mon, 18 Apr 2011 08:25:43 +0000 (18 18:25 +1000) | ||
| committer | NeilBrown <neilb@suse.de> | |
| Mon, 18 Apr 2011 08:25:43 +0000 (18 18:25 +1000) | ||
| tree | c0c50ab6ac43e9c762199bfd94c787f43a8e0896 | treesnapshot (tar.gz zip) |
| parent | 97658cdd3af7d01461874c93b89afa4a2465e7c6 | commitdiff |
md: incorporate new plugging into raid5.
In raid5 plugging is used for 2 things:
1/ collecting writes that require a bitmap update
2/ collecting writes in the hope that we can create full
stripes - or at least more-full.
We now release these different sets of stripes when plug_cnt
is zero.
Also in make_request, we call mddev_check_plug to hopefully increase
plug_cnt, and wake up the thread at the end if plugging wasn't
achieved for some reason.
Signed-off-by: NeilBrown <neilb@suse.de>
In raid5 plugging is used for 2 things:
1/ collecting writes that require a bitmap update
2/ collecting writes in the hope that we can create full
stripes - or at least more-full.
We now release these different sets of stripes when plug_cnt
is zero.
Also in make_request, we call mddev_check_plug to hopefully increase
plug_cnt, and wake up the thread at the end if plugging wasn't
achieved for some reason.
Signed-off-by: NeilBrown <neilb@suse.de>
| drivers/md/raid5.c | diffblobblamehistory |