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MD linear/0/1/10/5 TRIM support

From:  Shaohua Li <>
Subject:  [patch 0/7 v2] MD linear/0/1/10/5 TRIM support
Date:  Fri, 10 Aug 2012 10:51:13 +0800
Message-ID:  <>
Archive-link:  Article

This is the patchset to support MD discard, which I refresh against latest
kernel. It's pretty straightforward for raid linear/0/1/10. The raid456 discard
support is tricky, please see the log in the patches for details.

Previously when I posted the patches out, people complain SATA SSD discard
request merge error. Now a patch to disable discard request merge is in Jens's
tree. We don't have this issue any more.
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