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authorShaohua Li <shli@fb.com>2017-02-13 16:21:49 -0800
committerShaohua Li <shli@fb.com>2017-02-13 19:24:16 -0800
commit26483819f89c5cf9d27620d70c95afeeeb9bece5 (patch)
treec6bc82084038c13c7c694062b4092a1eb8485abe /block
parente33fbb9cc73d6502e69eaf1c178e0c39059763ea (diff)
md: disable WRITE SAME if it fails in underlayer disks
This makes md do the same thing as dm for write same IO failure. Please see 7eee4ae(dm: disable WRITE SAME if it fails) for details why we need this. We did a little bit different than dm. Instead of disabling writesame in the first IO error, we disable it till next writesame IO coming after the first IO error. This way we don't need to clone a bio. Also reported here: https://bugzilla.kernel.org/show_bug.cgi?id=118581 Suggested-by: NeilBrown <neilb@suse.com> Acked-by: NeilBrown <neilb@suse.com> Signed-off-by: Shaohua Li <shli@fb.com>
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