xfs: track the number of blocks in each buftarg

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Add a bt_nr_sectors to track the number of sector in each buftarg, and
replace the check that hard codes sb_dblock in xfs_buf_map_verify with
this new value so that it is correct for non-ddev buftargs.  The
RT buftarg only has a superblock in the first block, so it is unlikely
to trigger this, or are we likely to ever have enough blocks in the
in-memory buftargs, but we might as well get the check right.

Fixes: 10616b806d ("xfs: fix _xfs_buf_find oops on blocks beyond the filesystem end")
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Carlos Maiolino <cem@kernel.org>

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This commit is contained in:

Christoph Hellwig 2025-09-19 06:12:08 -07:00 • committed by Carlos Maiolino

parent 3c54e6027f

commit 42852fe57c

5 changed files with 52 additions and 34 deletions

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42

fs/xfs/xfs_buf.c

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4

fs/xfs/xfs_buf.h

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10

fs/xfs/xfs_buf_item_recover.c

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7

fs/xfs/xfs_super.c

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23

fs/xfs/xfs_trans.c

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