xfs: fix xfs_bunmapi to allow unmapping of partial rt extents

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When XFS_BMAPI_REMAP is passed to bunmapi, that means that we want to
remove part of a block mapping without touching the allocator.  For
realtime files with rtextsize > 1, that also means that we should skip
all the code that changes a partial remove request into an unwritten
extent conversion.  IOWs, bunmapi in this mode should handle removing
the mapping from the rt file and nothing else.

Note that XFS_BMAPI_REMAP callers are required to decrement the
reference count and/or free the space manually.

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

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Darrick J. Wong 2024-02-22 12:44:22 -08:00

parent c75f1a2c15

commit 2b6a5ec268

1 changed files with 2 additions and 2 deletions

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fs/xfs/libxfs/xfs_bmap.c

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