xfs: avoid shared rmap operations for attr fork extents

Browse source

During code review, I noticed that the rmap code uses the (slower)
shared mappings rmap functions for any extent of a reflinked file, even
if those extents are for the attr fork, which doesn't support sharing.
We can speed up rmap a tiny bit by optimizing out this case.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>

...

This commit is contained in:

Darrick J. Wong 2020-09-24 09:42:55 -07:00

parent b38e07401e

commit d7884e6e90

1 changed files with 18 additions and 9 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

27

fs/xfs/libxfs/xfs_rmap.c

View file