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md/raid5: avoid reading parity blocks for full-stripe write to degraded array
author
NeilBrown
<neilb@suse.de>
Fri, 8 May 2015 08:19:33 +0000
(18:19 +1000)
committer
NeilBrown
<neilb@suse.de>
Fri, 8 May 2015 08:47:17 +0000
(18:47 +1000)
When performing a reconstruct write, we need to read all blocks
that are not being over-written .. except the parity (P and Q) blocks.
The code currently reads these (as they are not being over-written!)
unnecessarily.
Signed-off-by: NeilBrown <neilb@suse.de>
Fixes:
ea664c8245f3
("md/raid5: need_this_block: tidy/fix last condition.")
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git.openpandora.org / pandora-kernel.git / commitdiff