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authorChristoph Hellwig <hch@lst.de>2016-06-21 09:53:44 +1000
committerDave Chinner <david@fromorbit.com>2016-06-21 09:53:44 +1000
commit68a9f5e7007c1afa2cf6830b690a90d0187c0684 (patch)
tree986de78ca7e20e49604faecccc95685ce52b4090 /fs/xfs/xfs_iops.c
parentf0c6bcba74ac51cb77aadb33ad35cb2dc1ad1506 (diff)
downloadlinux-68a9f5e7007c1afa2cf6830b690a90d0187c0684.tar.bz2
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_iops.c')
-rw-r--r--fs/xfs/xfs_iops.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c
index 1a5ca4b4a866..5d1fdae4e39b 100644
--- a/fs/xfs/xfs_iops.c
+++ b/fs/xfs/xfs_iops.c
@@ -38,6 +38,7 @@
#include "xfs_dir2.h"
#include "xfs_trans_space.h"
#include "xfs_pnfs.h"
+#include "xfs_iomap.h"
#include <linux/capability.h>
#include <linux/xattr.h>
@@ -822,8 +823,8 @@ xfs_setattr_size(
error = dax_truncate_page(inode, newsize,
xfs_get_blocks_direct);
} else {
- error = block_truncate_page(inode->i_mapping, newsize,
- xfs_get_blocks);
+ error = iomap_truncate_page(inode, newsize,
+ &did_zeroing, &xfs_iomap_ops);
}
}
@@ -838,8 +839,8 @@ xfs_setattr_size(
* problem. Note that this includes any block zeroing we did above;
* otherwise those blocks may not be zeroed after a crash.
*/
- if (newsize > ip->i_d.di_size &&
- (oldsize != ip->i_d.di_size || did_zeroing)) {
+ if (did_zeroing ||
+ (newsize > ip->i_d.di_size && oldsize != ip->i_d.di_size)) {
error = filemap_write_and_wait_range(VFS_I(ip)->i_mapping,
ip->i_d.di_size, newsize);
if (error)