Changes since v1 [1]: 1/ move the del_gendisk() refactoring to its own patch (Dave) 2/ add unmap_dax_inodes to the xfs shutdown path (Dave) 3/ kill the unnecessary ->quiesce super operation and rename ->bdi_gone to ->force_failure. (Dave) 4/ rework tricky call to get_super() with a NULL bdev parameter. (Dave) [1]: https://lists.01.org/pipermail/linux-nvdimm/2016-January/003797.html --- As mentioned in [PATCH v2 2/4] "block: introduce del_gendisk_queue()" , historically we have waited for filesystem specific heuristics to attempt to guess when a block device is gone. Sometimes this works, but in other cases the system can hang waiting for the fs to trigger its shutdown protocol. Now with DAX we need new actions, like unmapping all inodes, to be taken upon a device loss event or fs corruption event. For now, the approach taken in the following patches only affects xfs and block drivers that are converted to use del_gendisk_queue(). We can add more filesystems and driver support over time. --- Dan Williams (4): block: prepare for del_gendisk_queue() block: introduce del_gendisk_queue() xfs: unmap dax at shutdown (force_failure) block, xfs: implement 'force_failure' notifications block/genhd.c | 87 +++++++++++++++++++++++++++++++++++------- drivers/block/brd.c | 9 +--- drivers/nvdimm/pmem.c | 3 - drivers/s390/block/dcssblk.c | 6 +-- fs/block_dev.c | 22 +++++++++++ fs/inode.c | 28 ++++++++++++++ fs/xfs/xfs_fsops.c | 9 ++++ fs/xfs/xfs_super.c | 8 ++++ include/linux/fs.h | 3 + include/linux/genhd.h | 1 10 files changed, 150 insertions(+), 26 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-block" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
