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xfs: active inodes stat is broken 

vn_active only ever gets decremented, so it has a very large
negative number.  Make it track the inode count we currently have
allocated properly so we can easily track the size of the inode
cache via tools like PCP.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Mark Tinguely <tinguely@sgi.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
This commit is contained in:
Dave Chinner 2014-12-04 09:42:40 +11:00 committed by Dave Chinner
parent 4db431f57b
commit cdc9cec7c0
2 changed files with 2 additions and 1 deletions
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2
fs/xfs/xfs_icache.c
View File

@ -65,6 +65,7 @@ xfs_inode_alloc(
return NULL;
}
XFS_STATS_INC(vn_active);
ASSERT(atomic_read(&ip->i_pincount) == 0);
ASSERT(!spin_is_locked(&ip->i_flags_lock));
ASSERT(!xfs_isiflocked(ip));
@ -130,6 +131,7 @@ xfs_inode_free(
/* asserts to verify all state is correct here */
ASSERT(atomic_read(&ip->i_pincount) == 0);
ASSERT(!xfs_isiflocked(ip));
XFS_STATS_DEC(vn_active);
call_rcu(&VFS_I(ip)->i_rcu, xfs_inode_free_callback);
}

1
fs/xfs/xfs_super.c
View File

@ -1008,7 +1008,6 @@ xfs_fs_evict_inode(
clear_inode(inode);
XFS_STATS_INC(vn_rele);
XFS_STATS_INC(vn_remove);
XFS_STATS_DEC(vn_active);
xfs_inactive(ip);
}