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authorJan Kara <jack@suse.cz>2017-05-02 14:14:13 +0300
committerJan Kara <jack@suse.cz>2017-05-24 14:35:20 +0300
commit0f0b9b63e14fc3f66e4d342df016c9b071c5abed (patch)
treefec48f48a56fbd973c9692164c0a7d29b24a21ef /fs/reiserfs
parentfde8e33d106846b081b0e6cd5e283af7146eb7e4 (diff)
downloadlinux-0f0b9b63e14fc3f66e4d342df016c9b071c5abed.tar.xz
gfs2: Make flush bios explicitely sync
Commit b685d3d65ac7 "block: treat REQ_FUA and REQ_PREFLUSH as synchronous" removed REQ_SYNC flag from WRITE_{FUA|PREFLUSH|...} definitions. generic_make_request_checks() however strips REQ_FUA and REQ_PREFLUSH flags from a bio when the storage doesn't report volatile write cache and thus write effectively becomes asynchronous which can lead to performance regressions Fix the problem by making sure all bios which are synchronous are properly marked with REQ_SYNC. Fixes: b685d3d65ac791406e0dfd8779cc9b3707fea5a3 CC: Steven Whitehouse <swhiteho@redhat.com> CC: cluster-devel@redhat.com CC: stable@vger.kernel.org Acked-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/reiserfs')
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