]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
dax: move writeback calls into the filesystems
authorRoss Zwisler <ross.zwisler@linux.intel.com>
Fri, 26 Feb 2016 23:19:55 +0000 (15:19 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Sat, 27 Feb 2016 18:28:52 +0000 (10:28 -0800)
commit7f6d5b529b7dfe2fca30cbf4bc81e16575090025
tree3dce0ed231dadcd470db83c1762a701004c1616b
parent20a90f58997245749c2bdfaea9e51f785ec90d0b
dax: move writeback calls into the filesystems

Previously calls to dax_writeback_mapping_range() for all DAX filesystems
(ext2, ext4 & xfs) were centralized in filemap_write_and_wait_range().

dax_writeback_mapping_range() needs a struct block_device, and it used
to get that from inode->i_sb->s_bdev.  This is correct for normal inodes
mounted on ext2, ext4 and XFS filesystems, but is incorrect for DAX raw
block devices and for XFS real-time files.

Instead, call dax_writeback_mapping_range() directly from the filesystem
->writepages function so that it can supply us with a valid block
device.  This also fixes DAX code to properly flush caches in response
to sync(2).

Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Cc: Al Viro <viro@ftp.linux.org.uk>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Jens Axboe <axboe@fb.com>
Cc: Matthew Wilcox <matthew.r.wilcox@intel.com>
Cc: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
fs/block_dev.c
fs/dax.c
fs/ext2/inode.c
fs/ext4/inode.c
fs/xfs/xfs_aops.c
include/linux/dax.h
mm/filemap.c