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authorChristoph Hellwig <hch@lst.de>2016-10-20 15:53:50 +1100
committerDave Chinner <david@fromorbit.com>2016-10-20 15:53:50 +1100
commit3ba020befef030aaabbd5eb82a09f6ddf02a9542 (patch)
treeb9f3d3f21209f5a875b51e4427d9b46141c77d08 /fs/xfs/xfs_trace.h
parent5f9268ca53aca992106d74edde3e7cf6c1be60a0 (diff)
downloadlinux-3ba020befef030aaabbd5eb82a09f6ddf02a9542.tar.bz2
xfs: optimize writes to reflink files
Instead of reserving space as the first thing in write_begin move it past reading the extent in the data fork. That way we only have to read from the data fork once and can reuse that information for trimming the extent to the shared/unshared boundary. Additionally this allows to easily limit the actual write size to said boundary, and avoid a roundtrip on the ilock. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs/xfs_trace.h')
-rw-r--r--fs/xfs/xfs_trace.h3
1 files changed, 1 insertions, 2 deletions
diff --git a/fs/xfs/xfs_trace.h b/fs/xfs/xfs_trace.h
index ad188d3a83f3..72f9f6b7a76a 100644
--- a/fs/xfs/xfs_trace.h
+++ b/fs/xfs/xfs_trace.h
@@ -3346,7 +3346,7 @@ DEFINE_INODE_IREC_EVENT(xfs_reflink_cow_alloc);
DEFINE_INODE_IREC_EVENT(xfs_reflink_cow_found);
DEFINE_INODE_IREC_EVENT(xfs_reflink_cow_enospc);
-DEFINE_RW_EVENT(xfs_reflink_reserve_cow_range);
+DEFINE_RW_EVENT(xfs_reflink_reserve_cow);
DEFINE_RW_EVENT(xfs_reflink_allocate_cow_range);
DEFINE_INODE_IREC_EVENT(xfs_reflink_bounce_dio_write);
@@ -3358,7 +3358,6 @@ DEFINE_SIMPLE_IO_EVENT(xfs_reflink_end_cow);
DEFINE_INODE_IREC_EVENT(xfs_reflink_cow_remap);
DEFINE_INODE_IREC_EVENT(xfs_reflink_cow_remap_piece);
-DEFINE_INODE_ERROR_EVENT(xfs_reflink_reserve_cow_range_error);
DEFINE_INODE_ERROR_EVENT(xfs_reflink_allocate_cow_range_error);
DEFINE_INODE_ERROR_EVENT(xfs_reflink_cancel_cow_range_error);
DEFINE_INODE_ERROR_EVENT(xfs_reflink_end_cow_error);