summaryrefslogtreecommitdiffstats
path: root/fs/squashfs/squashfs.h
diff options
context:
space:
mode:
authorChristoph Hellwig <hch@lst.de>2016-10-20 06:53:50 +0200
committerDave Chinner <david@fromorbit.com>2016-10-20 06:53:50 +0200
commit3ba020befef030aaabbd5eb82a09f6ddf02a9542 (patch)
treeb9f3d3f21209f5a875b51e4427d9b46141c77d08 /fs/squashfs/squashfs.h
parentxfs: don't bother looking at the refcount tree for reads (diff)
downloadlinux-3ba020befef030aaabbd5eb82a09f6ddf02a9542.tar.xz
linux-3ba020befef030aaabbd5eb82a09f6ddf02a9542.zip
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/squashfs/squashfs.h')
0 files changed, 0 insertions, 0 deletions