xfs: factor rmap btree size into the indlen calculations

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When we're estimating the amount of space it's going to take to satisfy
a delalloc reservation, we need to include the space that we might need
to grow the rmapbt.  This helps us to avoid running out of space later
when _iomap_write_allocate needs more space than we reserved.  Eryu Guan
observed this happening on generic/224 when sunit/swidth were set.

Reported-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>

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Darrick J. Wong 2016-11-28 14:57:42 +11:00 • committed by Dave Chinner

parent 1247ec4c5f

commit fd26a88093

1 changed files with 15 additions and 2 deletions

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fs/xfs/libxfs/xfs_bmap.c

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