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authorLars Ellenberg <lars.ellenberg@linbit.com>2011-06-28 15:22:48 +0400
committerPhilipp Reisner <philipp.reisner@linbit.com>2011-06-30 11:23:46 +0400
commit86e1e98e5c6b4edab97e2b058466ef553cfd878e (patch)
treee8b26c03a90edaf5214a094d3dcb1b223041b862 /drivers/scsi/scsi_sysfs.c
parent15b493d11fcce3c5547e3d7fb6d90e11ffe12777 (diff)
downloadlinux-86e1e98e5c6b4edab97e2b058466ef553cfd878e.tar.xz
drbd: we should write meta data updates with FLUSH FUA
We used to write these with BIO_RW_BARRIER aka REQ_HARDBARRIER (unless disabled in the configuration). The correct semantic now would be to write with FLUSH/FUA. For example, with activity log transactions, FUA alone is not enough, we need the corresponding bitmap update (and all related application updates) on stable storage as well. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Diffstat (limited to 'drivers/scsi/scsi_sysfs.c')
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