md/raid1: fix data lost for writemostly rdev#241
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If writemostly is enabled, alloc_behind_master_bio() will allocate a new bio for rdev, with bi_opf set to 0. Later, raid1_write_request() will clone from this bio, hence bi_opf is still 0 for the cloned bio. Submit this cloned bio will end up to be read, causing write data lost. Fix this problem by inheriting bi_opf from original bio for behind_mast_bio. Fixes: e879a0d ("md/raid1,raid10: don't ignore IO flags") Reported-and-tested-by: Ian Dall <ian@beware.dropbear.id.au> Closes: https://bugzilla.kernel.org/show_bug.cgi?id=220507 Signed-off-by: Yu Kuai <yukuai3@huawei.com>
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Upstream branch: c17fb54 |
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At least one diff in series https://patchwork.kernel.org/project/linux-raid/list/?series=998210 irrelevant now. Closing PR. |
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Pull request for series with
subject: md/raid1: fix data lost for writemostly rdev
version: 1
url: https://patchwork.kernel.org/project/linux-raid/list/?series=998210