diff options
| author | Darrick J. Wong <darrick.wong@oracle.com> | 2019-04-25 18:26:22 -0700 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2019-04-26 12:28:55 -0700 |
| commit | 9fe82b8c422b5d9e9011bc08e27b9044936d945f (patch) | |
| tree | 6285e6e1577fa04969cbb6e1a5630c4c72266e34 /fs/xfs/xfs_super.c | |
| parent | f60be90fc9a969d8d38d761aef1c930407a6a921 (diff) | |
| download | linux-next-9fe82b8c422b5d9e9011bc08e27b9044936d945f.tar.gz | |
xfs: track delayed allocation reservations across the filesystem
Add a percpu counter to track the number of blocks directly reserved for
delayed allocations on the data device. This counter (in contrast to
i_delayed_blks) does not track allocated CoW staging extents or anything
going on with the realtime device. It will be used in the upcoming
summary counter scrub function to check the free block counts without
having to freeze the filesystem or walk all the inodes to find the
delayed allocations.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Diffstat (limited to 'fs/xfs/xfs_super.c')
| -rw-r--r-- | fs/xfs/xfs_super.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index df917f41ca46..3a870a194cd9 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -1538,8 +1538,14 @@ xfs_init_percpu_counters( if (error) goto free_ifree; + error = percpu_counter_init(&mp->m_delalloc_blks, 0, GFP_KERNEL); + if (error) + goto free_fdblocks; + return 0; +free_fdblocks: + percpu_counter_destroy(&mp->m_fdblocks); free_ifree: percpu_counter_destroy(&mp->m_ifree); free_icount: @@ -1563,6 +1569,9 @@ xfs_destroy_percpu_counters( percpu_counter_destroy(&mp->m_icount); percpu_counter_destroy(&mp->m_ifree); percpu_counter_destroy(&mp->m_fdblocks); + ASSERT(XFS_FORCED_SHUTDOWN(mp) || + percpu_counter_sum(&mp->m_delalloc_blks) == 0); + percpu_counter_destroy(&mp->m_delalloc_blks); } static struct xfs_mount * |