libnvdimm: add dax_dev sync flag
This patch adds 'DAXDEV_SYNC' flag which is set for nd_region doing synchronous flush. This later is used to disable MAP_SYNC functionality for ext4 & xfs filesystem for devices don't support synchronous flush. Signed-off-by:Pankaj Gupta <pagupta@redhat.com> Signed-off-by:
Dan Williams <dan.j.williams@intel.com>
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- drivers/dax/bus.c 1 addition, 1 deletiondrivers/dax/bus.c
- drivers/dax/super.c 18 additions, 1 deletiondrivers/dax/super.c
- drivers/md/dm.c 2 additions, 1 deletiondrivers/md/dm.c
- drivers/nvdimm/pmem.c 4 additions, 1 deletiondrivers/nvdimm/pmem.c
- drivers/nvdimm/region_devs.c 7 additions, 0 deletionsdrivers/nvdimm/region_devs.c
- drivers/s390/block/dcssblk.c 1 addition, 1 deletiondrivers/s390/block/dcssblk.c
- include/linux/dax.h 22 additions, 2 deletionsinclude/linux/dax.h
- include/linux/libnvdimm.h 1 addition, 0 deletionsinclude/linux/libnvdimm.h
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