linux.git/fs/xfs/scrub/rtrmap.c, branch master

xfs: handle non-inode owners for rtrmap record checking

2026-07-14T09:01:47Z

LOLLM noticed that two helper functions in the rtrmapbt scrub code don't actually handle non-inode owners correctly -- CoW staging extents and rgsuperblock extents are not shareable, but they are mergeable. Fix these two helpers. Cc: stable@vger.kernel.org # v6.14 Fixes: 2d9a3e98053e8c ("xfs: allow overlapping rtrmapbt records for shared data extents") Signed-off-by: "Darrick J. Wong" Assisted-by: LOLLM # finding obvious bugs Reviewed-by: Christoph Hellwig Signed-off-by: Carlos Maiolino

xfs: use the rt version of the cow staging checker

2026-07-14T09:01:47Z

LOLLM also noticed that xchk_rtrmapbt_xref ought to be using the rtdev version of the "is this a cow extent?" helper function, not the datadev one. Cc: stable@vger.kernel.org # v6.14 Fixes: 91683bb3f264c0 ("xfs: cross-reference checks with the rt refcount btree") Signed-off-by: "Darrick J. Wong" Assisted-by: LOLLM # finding obvious bugs Reviewed-by: Christoph Hellwig Signed-off-by: Carlos Maiolino

xfs: add a xfs_rmap_inode_bmbt_owner

2026-06-09T07:14:41Z

Add a small wrapper for initializing the bmbt owner to i_ino. Signed-off-by: Christoph Hellwig Reviewed-by: Carlos Maiolino Reviewed-by: "Darrick J. Wong" Signed-off-by: Carlos Maiolino

xfs: directly include xfs_platform.h

2026-01-21T11:57:16Z

The xfs.h header conflicts with the public xfs.h in xfsprogs, leading to a spurious difference in all shared libxfs files that have to include libxfs_priv.h in userspace. Directly include xfs_platform.h so that we can add a header of the same name to xfsprogs and remove this major annoyance for the shared code. Signed-off-by: Christoph Hellwig Reviewed-by: Darrick J. Wong Signed-off-by: Carlos Maiolino

xfs: allow overlapping rtrmapbt records for shared data extents

2024-12-23T21:06:15Z

Allow overlapping realtime reverse mapping records if they both describe shared data extents and the fs supports reflink on the realtime volume. Signed-off-by: "Darrick J. Wong" Reviewed-by: Christoph Hellwig

xfs: cross-reference checks with the rt refcount btree

2024-12-23T21:06:14Z

Use the realtime refcount btree to implement cross-reference checks in other data structures. Signed-off-by: "Darrick J. Wong" Reviewed-by: Christoph Hellwig

xfs: online repair of the realtime rmap btree

2024-12-23T21:06:09Z

Repair the realtime rmap btree while mounted. Similar to the regular rmap btree repair code, we walk the data fork mappings of every realtime file in the filesystem to collect reverse-mapping records in an xfarray. Then we sort the xfarray, and use the btree bulk loader to create a new rtrmap btree ondisk. Finally, we swap the btree roots, and reap the old blocks in the usual way. Signed-off-by: "Darrick J. Wong" Reviewed-by: Christoph Hellwig

xfs: cross-reference the realtime rmapbt

2024-12-23T21:06:07Z

Teach the data fork and realtime bitmap scrubbers to cross-reference information with the realtime rmap btree. Signed-off-by: "Darrick J. Wong" Reviewed-by: Christoph Hellwig

xfs: cross-reference realtime bitmap to realtime rmapbt scrubber

2024-12-23T21:06:07Z

When we're checking the realtime rmap btree entries, cross-reference those entries with the realtime bitmap too. Signed-off-by: "Darrick J. Wong" Reviewed-by: Christoph Hellwig

xfs: scrub the realtime rmapbt

2024-12-23T21:06:07Z

Check the realtime reverse mapping btree against the rtbitmap, and modify the rtbitmap scrub to check against the rtrmapbt. Signed-off-by: "Darrick J. Wong" Reviewed-by: Christoph Hellwig