xfs: map an inode's offset to an exact physical block

Browse source

Teach the bmap routine to know how to map a range of file blocks to a
specific range of physical blocks, instead of simply allocating fresh
blocks.  This enables reflink to map a file to blocks that are already
in use.

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

...

This commit is contained in:

Darrick J. Wong 2016-10-03 09:11:27 -07:00

parent 77d61fe45e

commit f65306ea52

3 changed files with 131 additions and 1 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

68

fs/xfs/libxfs/xfs_bmap.c

View file

10

fs/xfs/libxfs/xfs_bmap.h

View file

54

fs/xfs/xfs_trace.h

View file