Song Liu 57a0f3a81e Revert "md: add md_submit_discard_bio() for submitting discard bio" ...

This reverts commit 2628089b74.

Matthew Ruffell reported data corruption in raid10 due to the changes
in discard handling [1]. Revert these changes before we find a proper fix.

[1] https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1907262/
Cc: Matthew Ruffell <matthew.ruffell@canonical.com>
Cc: Xiao Ni <xni@redhat.com>
Signed-off-by: Song Liu <songliubraving@fb.com>

2020-12-09 20:46:01 -08:00

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