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>
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- fs/xfs/xfs_aops.c 58 additions, 434 deletionsfs/xfs/xfs_aops.c
- fs/xfs/xfs_buf.h 0 additions, 1 deletionfs/xfs/xfs_buf.h
- fs/xfs/xfs_iomap.c 0 additions, 3 deletionsfs/xfs/xfs_iomap.c
- fs/xfs/xfs_super.c 1 addition, 1 deletionfs/xfs/xfs_super.c
- fs/xfs/xfs_trace.h 2 additions, 16 deletionsfs/xfs/xfs_trace.h
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