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xfs: add a xfs_rtgroup_raw_size helper

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Add a helper to figure the on-disk size of a group, accounting for the
XFS_SB_FEAT_INCOMPAT_ZONE_GAPS feature if needed.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
This commit is contained in:
Christoph Hellwig 2026-01-14 07:53:25 +01:00 committed by Carlos Maiolino
parent 41263267ef
commit fc633b5c5b
1 changed files with 15 additions and 0 deletions
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15
fs/xfs/libxfs/xfs_rtgroup.h
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@ -371,4 +371,19 @@ xfs_rtgs_to_rfsbs(
return xfs_groups_to_rfsbs(mp, nr_groups, XG_TYPE_RTG);
}
/*
* Return the "raw" size of a group on the hardware device. This includes the
* daddr gaps present for XFS_SB_FEAT_INCOMPAT_ZONE_GAPS file systems.
*/
static inline xfs_rgblock_t
xfs_rtgroup_raw_size(
struct xfs_mount *mp)
{
struct xfs_groups *g = &mp->m_groups[XG_TYPE_RTG];
if (g->has_daddr_gaps)
return 1U << g->blklog;
return g->blocks;
}
#endif /* __LIBXFS_RTGROUP_H */