diff options
Diffstat (limited to 'fs/xfs/xfs_iget.c')
| -rw-r--r-- | fs/xfs/xfs_iget.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/fs/xfs/xfs_iget.c b/fs/xfs/xfs_iget.c index 0cdd26932d8..cdb1c2505fc 100644 --- a/fs/xfs/xfs_iget.c +++ b/fs/xfs/xfs_iget.c @@ -43,6 +43,17 @@ /* + * Define xfs inode iolock lockdep classes. We need to ensure that all active + * inodes are considered the same for lockdep purposes, including inodes that + * are recycled through the XFS_IRECLAIMABLE state. This is the the only way to + * guarantee the locks are considered the same when there are multiple lock + * initialisation siteѕ. Also, define a reclaimable inode class so it is + * obvious in lockdep reports which class the report is against. + */ +static struct lock_class_key xfs_iolock_active; +struct lock_class_key xfs_iolock_reclaimable; + +/* * Allocate and initialise an xfs_inode. */ STATIC struct xfs_inode * @@ -71,6 +82,8 @@ xfs_inode_alloc( ASSERT(completion_done(&ip->i_flush)); mrlock_init(&ip->i_iolock, MRLOCK_BARRIER, "xfsio", ip->i_ino); + lockdep_set_class_and_name(&ip->i_iolock.mr_lock, + &xfs_iolock_active, "xfs_iolock_active"); /* initialise the xfs inode */ ip->i_ino = ino; @@ -218,6 +231,12 @@ xfs_iget_cache_hit( ip->i_flags |= XFS_INEW; __xfs_inode_clear_reclaim_tag(mp, pag, ip); inode->i_state = I_NEW; + + ASSERT(!rwsem_is_locked(&ip->i_iolock.mr_lock)); + mrlock_init(&ip->i_iolock, MRLOCK_BARRIER, "xfsio", ip->i_ino); + lockdep_set_class_and_name(&ip->i_iolock.mr_lock, + &xfs_iolock_active, "xfs_iolock_active"); + spin_unlock(&ip->i_flags_lock); write_unlock(&pag->pag_ici_lock); } else { |