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xfs: disable sb_frextents for zoned file systems 

Zoned file systems not only don't use the global frextents counter, but
for them the in-memory percpu counter also includes reservations taken
before even allocating delalloc extent records, so it will never match
the per-zone used information.  Disable all updates and verification of
the sb counter for zoned file systems as it isn't useful for them.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>
This commit is contained in:
Christoph Hellwig 2025-02-13 05:47:15 +01:00
parent 1fd8159e7c
commit 1d319ac6fe
5 changed files with 20 additions and 9 deletions
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2
fs/xfs/libxfs/xfs_sb.c
View File

@ -1333,7 +1333,7 @@ xfs_log_sb(
* we handle nearly-lockless reservations, so we must use the _positive
* variant here to avoid writing out nonsense frextents.
*/
if (xfs_has_rtgroups(mp)) {
if (xfs_has_rtgroups(mp) && !xfs_has_zoned(mp)) {
mp->m_sb.sb_frextents =
xfs_sum_freecounter(mp, XC_FREE_RTEXTENTS);
}

11
fs/xfs/scrub/fscounters.c
View File

@ -413,7 +413,13 @@ xchk_fscount_count_frextents(
fsc->frextents = 0;
fsc->frextents_delayed = 0;
if (!xfs_has_realtime(mp))
/*
* Don't bother verifying and repairing the fs counters for zoned file
* systems as they don't track an on-disk frextents count, and the
* in-memory percpu counter also includes reservations.
*/
if (!xfs_has_realtime(mp) || xfs_has_zoned(mp))
return 0;
while ((rtg = xfs_rtgroup_next(mp, rtg))) {
@ -597,7 +603,8 @@ xchk_fscounters(
try_again = true;
}
if (!xchk_fscount_within_range(sc, frextents,
if (!xfs_has_zoned(mp) &&
!xchk_fscount_within_range(sc, frextents,
&mp->m_free[XC_FREE_RTEXTENTS].count,
fsc->frextents - fsc->frextents_delayed)) {
if (fsc->frozen)

10
fs/xfs/scrub/fscounters_repair.c
View File

@ -74,10 +74,12 @@ xrep_fscounters(
* track of the delalloc reservations separately, as they are are
* subtracted from m_frextents, but not included in sb_frextents.
*/
xfs_set_freecounter(mp, XC_FREE_RTEXTENTS,
fsc->frextents - fsc->frextents_delayed);
if (!xfs_has_rtgroups(mp))
mp->m_sb.sb_frextents = fsc->frextents;
if (!xfs_has_zoned(mp)) {
xfs_set_freecounter(mp, XC_FREE_RTEXTENTS,
fsc->frextents - fsc->frextents_delayed);
if (!xfs_has_rtgroups(mp))
mp->m_sb.sb_frextents = fsc->frextents;
}
return 0;
}

2
fs/xfs/xfs_mount.c
View File

@ -553,7 +553,7 @@ xfs_check_summary_counts(
* If we're mounting the rt volume after recovering the log, recompute
* frextents from the rtbitmap file to fix the inconsistency.
*/
if (xfs_has_realtime(mp) && !xfs_is_clean(mp)) {
if (xfs_has_realtime(mp) && !xfs_has_zoned(mp) && !xfs_is_clean(mp)) {
error = xfs_rtalloc_reinit_frextents(mp);
if (error)
return error;

4
fs/xfs/xfs_super.c
View File

@ -1131,7 +1131,9 @@ xfs_reinit_percpu_counters(
percpu_counter_set(&mp->m_icount, mp->m_sb.sb_icount);
percpu_counter_set(&mp->m_ifree, mp->m_sb.sb_ifree);
xfs_set_freecounter(mp, XC_FREE_BLOCKS, mp->m_sb.sb_fdblocks);
xfs_set_freecounter(mp, XC_FREE_RTEXTENTS, mp->m_sb.sb_frextents);
if (!xfs_has_zoned(mp))
xfs_set_freecounter(mp, XC_FREE_RTEXTENTS,
mp->m_sb.sb_frextents);
}
static void