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authorChristoph Hellwig <hch@lst.de>2016-06-21 02:53:44 +0300
committerDave Chinner <david@fromorbit.com>2016-06-21 02:53:44 +0300
commit68a9f5e7007c1afa2cf6830b690a90d0187c0684 (patch)
tree986de78ca7e20e49604faecccc95685ce52b4090 /fs/xfs/xfs_iomap.h
parentf0c6bcba74ac51cb77aadb33ad35cb2dc1ad1506 (diff)
downloadlinux-68a9f5e7007c1afa2cf6830b690a90d0187c0684.tar.xz
xfs: implement iomap based buffered write path
Convert XFS to use the new iomap based multipage write path. This involves implementing the ->iomap_begin and ->iomap_end methods, and switching the buffered file write, page_mkwrite and xfs_iozero paths to the new iomap helpers. With this change __xfs_get_blocks will never be used for buffered writes, and the code handling them can be removed. Based on earlier code from Dave Chinner. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs/xfs_iomap.h')
-rw-r--r--fs/xfs/xfs_iomap.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/fs/xfs/xfs_iomap.h b/fs/xfs/xfs_iomap.h
index 718f07c5c0d2..e066d045e2ff 100644
--- a/fs/xfs/xfs_iomap.h
+++ b/fs/xfs/xfs_iomap.h
@@ -18,7 +18,8 @@
#ifndef __XFS_IOMAP_H__
#define __XFS_IOMAP_H__
-struct iomap;
+#include <linux/iomap.h>
+
struct xfs_inode;
struct xfs_bmbt_irec;
@@ -33,4 +34,6 @@ int xfs_iomap_write_unwritten(struct xfs_inode *, xfs_off_t, xfs_off_t);
void xfs_bmbt_to_iomap(struct xfs_inode *, struct iomap *,
struct xfs_bmbt_irec *);
+extern struct iomap_ops xfs_iomap_ops;
+
#endif /* __XFS_IOMAP_H__*/