Commit eace45a1 authored by Trond Myklebust's avatar Trond Myklebust
Browse files

NFS: Trace effects of readdirplus on the dcache 



Trace the effects of readdirplus on attribute and dentry revalidation.

Signed-off-by: default avatarTrond Myklebust <trond.myklebust@hammerspace.com>
parent 310e3187

fs/nfs/dir.c

+5 −0
Original line number Diff line number Diff line
@@ -754,8 +754,12 @@ void nfs_prime_dcache(struct dentry *parent, struct nfs_entry *entry, 
			status = nfs_refresh_inode(d_inode(dentry), entry->fattr);

			if (!status)

				nfs_setsecurity(d_inode(dentry), entry->fattr);

			trace_nfs_readdir_lookup_revalidate(d_inode(parent),

							    dentry, 0, status);

			goto out;

		} else {

			trace_nfs_readdir_lookup_revalidate_failed(

				d_inode(parent), dentry, 0);

			d_invalidate(dentry);

			dput(dentry);

			dentry = NULL;
@@ -777,6 +781,7 @@ void nfs_prime_dcache(struct dentry *parent, struct nfs_entry *entry, 
		dentry = alias;

	}

	nfs_set_verifier(dentry, dir_verifier);

	trace_nfs_readdir_lookup(d_inode(parent), dentry, 0);

out:

	dput(dentry);

}

fs/nfs/nfstrace.h

+3 −0
Original line number Diff line number Diff line
@@ -432,6 +432,9 @@ DEFINE_NFS_LOOKUP_EVENT(nfs_lookup_enter); 
DEFINE_NFS_LOOKUP_EVENT_DONE(nfs_lookup_exit);

DEFINE_NFS_LOOKUP_EVENT(nfs_lookup_revalidate_enter);

DEFINE_NFS_LOOKUP_EVENT_DONE(nfs_lookup_revalidate_exit);

DEFINE_NFS_LOOKUP_EVENT(nfs_readdir_lookup);

DEFINE_NFS_LOOKUP_EVENT(nfs_readdir_lookup_revalidate_failed);

DEFINE_NFS_LOOKUP_EVENT_DONE(nfs_readdir_lookup_revalidate);



TRACE_EVENT(nfs_atomic_open_enter,

		TP_PROTO(