xfs: factor out a xfs_growfs_rt_alloc_fake_mount helper

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Split the code to set up a fake mount point to calculate new RT
geometry out of xfs_growfs_rt_bmblock so that it can be reused.

Note that this changes the rmblocks calculation method to be based
on the passed in rblocks and extsize and not the explicitly passed
one, but both methods will always lead to the same result.  The new
version just does a little bit more math while being more general.

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

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Darrick J. Wong 2024-11-03 20:19:12 -08:00

parent cb9cd6e56e

commit 1029f08dc5

1 changed files with 35 additions and 15 deletions

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fs/xfs/xfs_rtalloc.c

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