From de0e8c20ba3a65b0f15040aabbefdc1999876e6b Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Mon, 23 Feb 2015 21:44:19 +1100 Subject: xfs: use i_mmaplock on read faults Take the i_mmaplock over read page faults. These come through the ->fault callout, so we need to wrap the generic implementation with the i_mmaplock. While there, add tracepoints for the read fault as it passes through XFS. This gives us a lock order of mmap_sem -> i_mmaplock -> page_lock -> i_lock. Signed-off-by: Dave Chinner Reviewed-by: Brian Foster Signed-off-by: Dave Chinner --- fs/xfs/xfs_trace.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'fs/xfs/xfs_trace.h') diff --git a/fs/xfs/xfs_trace.h b/fs/xfs/xfs_trace.h index 51372e34d988..c496153b976b 100644 --- a/fs/xfs/xfs_trace.h +++ b/fs/xfs/xfs_trace.h @@ -685,6 +685,8 @@ DEFINE_INODE_EVENT(xfs_inode_set_eofblocks_tag); DEFINE_INODE_EVENT(xfs_inode_clear_eofblocks_tag); DEFINE_INODE_EVENT(xfs_inode_free_eofblocks_invalid); +DEFINE_INODE_EVENT(xfs_filemap_fault); + DECLARE_EVENT_CLASS(xfs_iref_class, TP_PROTO(struct xfs_inode *ip, unsigned long caller_ip), TP_ARGS(ip, caller_ip), -- cgit v1.2.1