xfs: add support for sub-pagesize writeback without buffer_heads
authorChristoph Hellwig <hch@lst.de>
Thu, 12 Jul 2018 05:26:05 +0000 (22:26 -0700)
committerDarrick J. Wong <darrick.wong@oracle.com>
Thu, 12 Jul 2018 05:26:05 +0000 (22:26 -0700)
commit82cb14175e7ddb08721fb1d766195cd10dad791a
tree47c53d542f3e49189bad062f55bc38d6e35bf105
parent9dc55f1389f9569acf9659e58dd836a9c70df217
xfs: add support for sub-pagesize writeback without buffer_heads

Switch to using the iomap_page structure for checking sub-page uptodate
status and track sub-page I/O completion status, and remove large
quantities of boilerplate code working around buffer heads.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
fs/xfs/xfs_aops.c
fs/xfs/xfs_buf.h
fs/xfs/xfs_iomap.c
fs/xfs/xfs_super.c
fs/xfs/xfs_trace.h