[PATCHSET,v1.0,0/3] xfsprogs: enable FITRIM for the realtime section

Message

Darrick J. Wong Dec. 30, 2022, 10:17 p.m. UTC

Hi all,

One thing that's been missing for a long time is the ability to tell
underlying storage that it can unmap the unused space on the realtime
device.  This short series exposes this functionality through FITRIM.
Callers that want ranged FITRIM should be aware that the realtime space
exists in the offset range after the data device.  However, it is
anticipated that most callers pass in offset=0 len=-1ULL and will not
notice or care.

If you're going to start using this mess, you probably ought to just
pull from my git trees, which are linked below.

This is an extraordinary way to destroy everything.  Enjoy!
Comments and questions are, as always, welcome.

--D

kernel git tree:
https://git.kernel.org/cgit/linux/kernel/git/djwong/xfs-linux.git/log/?h=realtime-discard
---
 fs/xfs/xfs_discard.c |  167 +++++++++++++++++++++++++++++++++++++++++++-------
 fs/xfs/xfs_trace.h   |   20 ++++++
 2 files changed, 164 insertions(+), 23 deletions(-)