Commit f6e70c59 authored by Jeff Layton's avatar Jeff Layton Committed by Anna Schumaker
Browse files

nfs: print fileid in lookup tracepoints 



With this we can see the dentry -> inode linkage that's being
revalidated. A fileid of 0 means "negative dentry".

Signed-off-by: default avatarJeff Layton <jlayton@kernel.org>
Reviewed-by: default avatarChuck Lever <chuck.lever@oracle.com>
Signed-off-by: default avatarAnna Schumaker <Anna.Schumaker@Netapp.com>
parent 310b1f89

fs/nfs/nfstrace.h

+10 −4
Original line number Diff line number Diff line
@@ -400,6 +400,7 @@ DECLARE_EVENT_CLASS(nfs_lookup_event, 
			__field(unsigned long, flags)

			__field(dev_t, dev)

			__field(u64, dir)

			__field(u64, fileid)

			__string(name, dentry->d_name.name)

		),
@@ -407,16 +408,18 @@ DECLARE_EVENT_CLASS(nfs_lookup_event, 
			__entry->dev = dir->i_sb->s_dev;

			__entry->dir = NFS_FILEID(dir);

			__entry->flags = flags;

			__entry->fileid = d_is_negative(dentry) ? 0 : NFS_FILEID(d_inode(dentry));

			__assign_str(name, dentry->d_name.name);

		),



		TP_printk(

			"flags=0x%lx (%s) name=%02x:%02x:%llu/%s",

			"flags=0x%lx (%s) name=%02x:%02x:%llu/%s fileid=%llu",

			__entry->flags,

			show_fs_lookup_flags(__entry->flags),

			MAJOR(__entry->dev), MINOR(__entry->dev),

			(unsigned long long)__entry->dir,

			__get_str(name)

			__get_str(name),

			__entry->fileid

		)

);
@@ -444,6 +447,7 @@ DECLARE_EVENT_CLASS(nfs_lookup_event_done, 
			__field(unsigned long, flags)

			__field(dev_t, dev)

			__field(u64, dir)

			__field(u64, fileid)

			__string(name, dentry->d_name.name)

		),
@@ -452,17 +456,19 @@ DECLARE_EVENT_CLASS(nfs_lookup_event_done, 
			__entry->dir = NFS_FILEID(dir);

			__entry->error = error < 0 ? -error : 0;

			__entry->flags = flags;

			__entry->fileid = d_is_negative(dentry) ? 0 : NFS_FILEID(d_inode(dentry));

			__assign_str(name, dentry->d_name.name);

		),



		TP_printk(

			"error=%ld (%s) flags=0x%lx (%s) name=%02x:%02x:%llu/%s",

			"error=%ld (%s) flags=0x%lx (%s) name=%02x:%02x:%llu/%s fileid=%llu",

			-__entry->error, show_nfs_status(__entry->error),

			__entry->flags,

			show_fs_lookup_flags(__entry->flags),

			MAJOR(__entry->dev), MINOR(__entry->dev),

			(unsigned long long)__entry->dir,

			__get_str(name)

			__get_str(name),

			__entry->fileid

		)

);