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authorNeilBrown <neilb@suse.de>2015-05-08 11:19:33 +0300
committerNeilBrown <neilb@suse.de>2015-05-08 11:47:17 +0300
commit10d82c5f0d167ef75a2d8d7d4eed9ee43d3369c9 (patch)
tree0aa8aa74575cd2ff2028030fb830a8e73f5574c6 /tools/perf/scripts/python/call-graph-from-postgresql.py
parentb0c783b32318bef29d64086fa812e8c659cb5b37 (diff)
downloadlinux-10d82c5f0d167ef75a2d8d7d4eed9ee43d3369c9.tar.xz
md/raid5: avoid reading parity blocks for full-stripe write to degraded array
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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