Merge tag 'xfs-merge-6.14' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux

Pull XFS updates from Carlos Maiolino:
"This is mostly focused on the implementation of reflink and
reverse-mapping sup

Merge tag 'xfs-merge-6.14' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux

Pull XFS updates from Carlos Maiolino:
"This is mostly focused on the implementation of reflink and
reverse-mapping support for XFS's real-time devices.

It also includes several bugfixes.

- Implement reflink support for the realtime device

- Implement reverse-mapping support for the realtime device

- Several bug fixes and cleanups"

* tag 'xfs-merge-6.14' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: (121 commits)
xfs: fix buffer lookup vs release race
xfs: check for dead buffers in xfs_buf_find_insert
xfs: add a b_iodone callback to struct xfs_buf
xfs: move b_li_list based retry handling to common code
xfs: simplify xfsaild_resubmit_item
xfs: always complete the buffer inline in xfs_buf_submit
xfs: remove the extra buffer reference in xfs_buf_submit
xfs: move invalidate_kernel_vmap_range to xfs_buf_ioend
xfs: simplify buffer I/O submission
xfs: move in-memory buftarg handling out of _xfs_buf_ioapply
xfs: move write verification out of _xfs_buf_ioapply
xfs: remove xfs_buf_delwri_submit_buffers
xfs: simplify xfs_buf_delwri_pushbuf
xfs: move xfs_buf_iowait out of (__)xfs_buf_submit
xfs: remove the incorrect comment about the b_pag field
xfs: remove the incorrect comment above xfs_buf_free_maps
xfs: fix a double completion for buffers on in-memory targets
xfs/libxfs: replace kmalloc() and memcpy() with kmemdup()
xfs: constify feature checks
xfs: refactor xfs_fs_statfs
...

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Merge tag 'realtime-rmap_2024-12-23' of https://git.kernel.org/pub/scm/linux/kernel/git/djwong/xfs-linux into for-next

xfs: realtime reverse-mapping support [v6.2 04/14]

This is the latest revision

Merge tag 'realtime-rmap_2024-12-23' of https://git.kernel.org/pub/scm/linux/kernel/git/djwong/xfs-linux into for-next

xfs: realtime reverse-mapping support [v6.2 04/14]

This is the latest revision of a patchset that adds to XFS kernel
support for reverse mapping for the realtime device. This time around
I've fixed some of the bitrot that I've noticed over the past few
months, and most notably have converted rtrmapbt to use the metadata
inode directory feature instead of burning more space in the superblock.

At the beginning of the set are patches to implement storing B+tree
leaves in an inode root, since the realtime rmapbt is rooted in an
inode, unlike the regular rmapbt which is rooted in an AG block.
Prior to this, the only btree that could be rooted in the inode fork
was the block mapping btree; if all the extent records fit in the
inode, format would be switched from 'btree' to 'extents'.

The next few patches enhance the reverse mapping routines to handle
the parts that are specific to rtgroups -- adding the new btree type,
adding a new log intent item type, and wiring up the metadata directory
tree entries.

Finally, implement GETFSMAP with the rtrmapbt and scrub functionality
for the rtrmapbt and rtbitmap and online fsck functionality.

This has been running on the djcloud for months with no problems. Enjoy!

Signed-off-by: "Darrick J. Wong" <djwong@kernel.org>

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xfs: create a shadow rmap btree during realtime rmap repair

Create an in-memory btree of rmap records instead of an array. This
enables us to do live record collection instead of freezing the fs.

xfs: create a shadow rmap btree during realtime rmap repair

Create an in-memory btree of rmap records instead of an array. This
enables us to do live record collection instead of freezing the fs.

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

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xfs: online repair of the realtime rmap btree

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 t

xfs: online repair of the realtime rmap btree

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" <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>

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xfs: create routine to allocate and initialize a realtime rmap btree inode

Create a library routine to allocate and initialize an empty realtime
rmapbt inode. We'll use this for mkfs and repair.

S

xfs: create routine to allocate and initialize a realtime rmap btree inode

Create a library routine to allocate and initialize an empty realtime
rmapbt inode. We'll use this for mkfs and repair.

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

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xfs: wire up a new metafile type for the realtime rmap

Plumb in the pieces we need to embed the root of the realtime rmap btree
in an inode's data fork, complete with new metafile type and on-disk
i

xfs: wire up a new metafile type for the realtime rmap

Plumb in the pieces we need to embed the root of the realtime rmap btree
in an inode's data fork, complete with new metafile type and on-disk
interpretation functions.

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

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xfs: add metadata reservations for realtime rmap btrees

Reserve some free blocks so that we will always have enough free blocks
in the data volume to handle expansion of the realtime rmap btree.

Si

xfs: add metadata reservations for realtime rmap btrees

Reserve some free blocks so that we will always have enough free blocks
in the data volume to handle expansion of the realtime rmap btree.

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

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xfs: introduce realtime rmap btree ondisk definitions

Add the ondisk structure definitions for realtime rmap btrees. The
realtime rmap btree will be rooted from a hidden inode so it needs to
have a

xfs: introduce realtime rmap btree ondisk definitions

Add the ondisk structure definitions for realtime rmap btrees. The
realtime rmap btree will be rooted from a hidden inode so it needs to
have a separate btree block magic and pointer format.

Next, add everything needed to read, write and manipulate rmap btree
blocks. This prepares the way for connecting the btree operations
implementation, though embedding the rtrmap btree root in the inode
comes later in the series.

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

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