xfs: check that the rtrmapbt maxlevels doesn't increase when growing fs

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The size of filesystem transaction reservations depends on the maximum
height (maxlevels) of the realtime btrees.  Since we don't want a grow
operation to increase the reservation size enough that we'll fail the
minimum log size checks on the next mount, constrain growfs operations
if they would cause an increase in those maxlevels.

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

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This commit is contained in:

Darrick J. Wong 2024-11-20 16:20:32 -08:00

parent b3683c74bf

commit 59a57acbce

4 changed files with 60 additions and 7 deletions

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11

fs/xfs/xfs_fsops.c

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25

fs/xfs/xfs_rtalloc.c

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10

fs/xfs/xfs_rtalloc.h

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21

fs/xfs/xfs_trace.h

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