xfs: condense symbolic links after a mapping exchange operation

Browse source

The previous commit added a new file mapping exchange flag that enables
us to perform post-exchange processing on file2 once we're done
exchanging the extent mappings.  Now add this ability for symlinks.

This isn't used anywhere right now, but we need to have the basic ondisk
flags in place so that a future online symlink repair feature can
salvage the remote target in a temporary link and exchange the data fork
mappings when ready.  If one file is in extents format and the other is
inline, we will have to promote both to extents format to perform the
exchange.  After the exchange, we can try to condense the fixed symlink
down to inline format if possible.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>

...

This commit is contained in:

Darrick J. Wong 2024-04-15 14:54:21 -07:00

parent da165fbde2

commit 33a9be2b70

4 changed files with 103 additions and 45 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

49

fs/xfs/libxfs/xfs_exchmaps.c

View file

47

fs/xfs/libxfs/xfs_symlink_remote.c

View file

1

fs/xfs/libxfs/xfs_symlink_remote.h

View file

53

fs/xfs/xfs_symlink.c

View file