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xfs: refactor xfs_rtsummary_blockcount

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Make xfs_rtsummary_blockcount take all the required information from
the mount structure and return the number of summary levels from it
as well.  This cleans up many of the callers and prepares for making the
rtsummary files per-rtgroup where they need to look at different value.

This means we recalculate some values in some callers, but as all these
calculations are outside the fast path and cheap, which seems like a
price worth paying.

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>
This commit is contained in:
Christoph Hellwig
2024-11-03 20:19:14 -08:00
committed by Darrick J. Wong
parent 5a7566c8d6
commit f8c5a8415f
5 changed files with 17 additions and 22 deletions
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13
fs/xfs/libxfs/xfs_rtbitmap.c
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@@ -20,6 +20,7 @@
#include "xfs_error.h"
#include "xfs_rtbitmap.h"
#include "xfs_health.h"
#include "xfs_sb.h"
/*
* Realtime allocator bitmap functions shared with userspace.
@@ -1166,16 +1167,20 @@ xfs_rtbitmap_blockcount(
return xfs_rtbitmap_blockcount_len(mp, mp->m_sb.sb_rextents);
}
/* Compute the number of rtsummary blocks needed to track the given rt space. */
/*
* Compute the geometry of the rtsummary file needed to track the given rt
* space.
*/
xfs_filblks_t
xfs_rtsummary_blockcount(
struct xfs_mount *mp,
unsigned int rsumlevels,
xfs_extlen_t rbmblocks)
unsigned int *rsumlevels)
{
unsigned long long rsumwords;
rsumwords = (unsigned long long)rsumlevels * rbmblocks;
*rsumlevels = xfs_compute_rextslog(mp->m_sb.sb_rextents) + 1;
rsumwords = xfs_rtbitmap_blockcount(mp) * (*rsumlevels);
return XFS_B_TO_FSB(mp, rsumwords << XFS_WORDLOG);
}