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Commit c84d500b authored by J. Bruce Fields's avatar J. Bruce Fields
Browse files

nfsd4: use a single struct file for delegations 



When we converted to sharing struct filess between nfs4 opens I went too
far and also used the same mechanism for delegations.  But keeping
a reference to the struct file ensures it will outlast the lease, and
allows us to remove the lease with the same file as we added it.

Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
parent e63eb937

fs/nfsd/nfs4state.c

+5 −5
Original line number Diff line number Diff line
@@ -230,7 +230,8 @@ alloc_init_deleg(struct nfs4_client *clp, struct nfs4_stateid *stp, struct svc_f 
	dp->dl_client = clp;

	get_nfs4_file(fp);

	dp->dl_file = fp;

	nfs4_file_get_access(fp, O_RDONLY);

	dp->dl_vfs_file = find_readable_file(fp);

	get_file(dp->dl_vfs_file);

	dp->dl_flock = NULL;

	dp->dl_type = type;

	dp->dl_stateid.si_boot = boot_time;
@@ -252,6 +253,7 @@ nfs4_put_delegation(struct nfs4_delegation *dp) 
	if (atomic_dec_and_test(&dp->dl_count)) {

		dprintk("NFSD: freeing dp %p\n",dp);

		put_nfs4_file(dp->dl_file);

		fput(dp->dl_vfs_file);

		kmem_cache_free(deleg_slab, dp);

		num_delegations--;

	}
@@ -265,12 +267,10 @@ nfs4_put_delegation(struct nfs4_delegation *dp) 
static void

nfs4_close_delegation(struct nfs4_delegation *dp)

{

	struct file *filp = find_readable_file(dp->dl_file);



	dprintk("NFSD: close_delegation dp %p\n",dp);

	/* XXX: do we even need this check?: */

	if (dp->dl_flock)

		vfs_setlease(filp, F_UNLCK, &dp->dl_flock);

	nfs4_file_put_access(dp->dl_file, O_RDONLY);

		vfs_setlease(dp->dl_vfs_file, F_UNLCK, &dp->dl_flock);

}



/* Called under the state lock. */

fs/nfsd/state.h

+1 −0
Original line number Diff line number Diff line
@@ -81,6 +81,7 @@ struct nfs4_delegation { 
	atomic_t		dl_count;       /* ref count */

	struct nfs4_client	*dl_client;

	struct nfs4_file	*dl_file;

	struct file		*dl_vfs_file;

	struct file_lock	*dl_flock;

	u32			dl_type;

	time_t			dl_time;