From: Darrick J. Wong <djwong@xxxxxxxxxx>
Make the free rt extent count a part of the lazy sb counters when the
realtime groups feature is enabled. This is possible because the patch
to recompute frextents from the rtbitmap during log recovery predates
the code adding rtgroup support, hence we know that the value will
always be correct during runtime.
Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
---
include/xfs_mount.h | 1 +
libxfs/xfs_sb.c | 5 +++++
2 files changed, 6 insertions(+)
diff --git a/include/xfs_mount.h b/include/xfs_mount.h
index ec0956c539f..184e7a38fb3 100644
--- a/include/xfs_mount.h
+++ b/include/xfs_mount.h
@@ -39,6 +39,7 @@ typedef struct xfs_mount {
#define m_icount m_sb.sb_icount
#define m_ifree m_sb.sb_ifree
#define m_fdblocks m_sb.sb_fdblocks
+#define m_frextents m_sb.sb_frextents
spinlock_t m_sb_lock;
/*
diff --git a/libxfs/xfs_sb.c b/libxfs/xfs_sb.c
index 3bd56edab87..0ded5220161 100644
--- a/libxfs/xfs_sb.c
+++ b/libxfs/xfs_sb.c
@@ -1148,6 +1148,9 @@ xfs_log_sb(
* sb counters, despite having a percpu counter. It is always kept
* consistent with the ondisk rtbitmap by xfs_trans_apply_sb_deltas()
* and hence we don't need have to update it here.
+ *
+ * sb_frextents was added to the lazy sb counters when the rt groups
+ * feature was introduced.
*/
if (xfs_has_lazysbcount(mp)) {
mp->m_sb.sb_icount = percpu_counter_sum(&mp->m_icount);
@@ -1156,6 +1159,8 @@ xfs_log_sb(
mp->m_sb.sb_icount);
mp->m_sb.sb_fdblocks = percpu_counter_sum(&mp->m_fdblocks);
}
+ if (xfs_has_rtgroups(mp))
+ mp->m_sb.sb_frextents = percpu_counter_sum(&mp->m_frextents);
xfs_sb_to_disk(bp->b_addr, &mp->m_sb);
xfs_trans_buf_set_type(tp, bp, XFS_BLFT_SB_BUF);
