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xfs: split xfs_trim_rtdev_extents

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Split xfs_trim_rtdev_extents into two parts to prepare for reusing the
main validation also for RT group aware file systems.

Use the fully features xfs_daddr_to_rtb helper to convert from a daddr
to a xfs_rtblock_t to prepare for segmented addressing in RT groups.

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 20:19:09 -08:00 committed by Darrick J. Wong
parent d6d5c90ada
commit c8edf1cbef
1 changed files with 32 additions and 25 deletions
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57
fs/xfs/xfs_discard.c
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@ -21,6 +21,7 @@
#include "xfs_ag.h"
#include "xfs_health.h"
#include "xfs_rtbitmap.h"
#include "xfs_rtgroup.h"
/*
* Notes on an efficient, low latency fstrim algorithm
@ -548,44 +549,23 @@ xfs_trim_gather_rtextent(
}
static int
xfs_trim_rtdev_extents(
xfs_trim_rtextents(
struct xfs_mount *mp,
xfs_daddr_t start,
xfs_daddr_t end,
xfs_rtxnum_t low,
xfs_rtxnum_t high,
xfs_daddr_t minlen)
{
struct xfs_trim_rtdev tr = {
.minlen_fsb = XFS_BB_TO_FSB(mp, minlen),
.extent_list = LIST_HEAD_INIT(tr.extent_list),
};
xfs_rtxnum_t low, high;
struct xfs_trans *tp;
xfs_daddr_t rtdev_daddr;
int error;
INIT_LIST_HEAD(&tr.extent_list);
/* Shift the start and end downwards to match the rt device. */
rtdev_daddr = XFS_FSB_TO_BB(mp, mp->m_sb.sb_dblocks);
if (start > rtdev_daddr)
start -= rtdev_daddr;
else
start = 0;
if (end <= rtdev_daddr)
return 0;
end -= rtdev_daddr;
error = xfs_trans_alloc_empty(mp, &tp);
if (error)
return error;
end = min_t(xfs_daddr_t, end,
XFS_FSB_TO_BB(mp, mp->m_sb.sb_rblocks) - 1);
/* Convert the rt blocks to rt extents */
low = xfs_rtb_to_rtxup(mp, XFS_BB_TO_FSB(mp, start));
high = xfs_rtb_to_rtx(mp, XFS_BB_TO_FSBT(mp, end));
/*
* Walk the free ranges between low and high. The query_range function
* trims the extents returned.
@ -620,6 +600,33 @@ xfs_trim_rtdev_extents(
xfs_trans_cancel(tp);
return error;
}
static int
xfs_trim_rtdev_extents(
struct xfs_mount *mp,
xfs_daddr_t start,
xfs_daddr_t end,
xfs_daddr_t minlen)
{
xfs_rtblock_t start_rtbno, end_rtbno;
xfs_rtxnum_t start_rtx, end_rtx;
/* Shift the start and end downwards to match the rt device. */
start_rtbno = xfs_daddr_to_rtb(mp, start);
if (start_rtbno > mp->m_sb.sb_dblocks)
start_rtbno -= mp->m_sb.sb_dblocks;
else
start_rtbno = 0;
start_rtx = xfs_rtb_to_rtx(mp, start_rtbno);
end_rtbno = xfs_daddr_to_rtb(mp, end);
if (end_rtbno <= mp->m_sb.sb_dblocks)
return 0;
end_rtbno -= mp->m_sb.sb_dblocks;
end_rtx = xfs_rtb_to_rtx(mp, end_rtbno + mp->m_sb.sb_rextsize - 1);
return xfs_trim_rtextents(mp, start_rtx, end_rtx, minlen);
}
#else
# define xfs_trim_rtdev_extents(...) (-EOPNOTSUPP)
#endif /* CONFIG_XFS_RT */