[PATCH] knfsd: nfsd: store export path in export
Store the export path in the svc_export structure instead of storing only the
dentry. This will prevent the need for additional d_path calls to provide
NFSv4 fs_locations support.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/fs/nfsd/export.c b/fs/nfsd/export.c
index 597b3cb..d3178de 100644
--- a/fs/nfsd/export.c
+++ b/fs/nfsd/export.c
@@ -325,6 +325,7 @@
dput(exp->ex_dentry);
mntput(exp->ex_mnt);
auth_domain_put(exp->ex_client);
+ kfree(exp->ex_path);
kfree(exp);
}
@@ -398,6 +399,7 @@
int an_int;
nd.dentry = NULL;
+ exp.ex_path = NULL;
if (mesg[mlen-1] != '\n')
return -EINVAL;
@@ -428,6 +430,10 @@
exp.ex_client = dom;
exp.ex_mnt = nd.mnt;
exp.ex_dentry = nd.dentry;
+ exp.ex_path = kstrdup(buf, GFP_KERNEL);
+ err = -ENOMEM;
+ if (!exp.ex_path)
+ goto out;
/* expiry */
err = -EINVAL;
@@ -473,6 +479,7 @@
else
exp_put(expp);
out:
+ kfree(exp.ex_path);
if (nd.dentry)
path_release(&nd);
out_no_path:
@@ -524,6 +531,7 @@
new->ex_client = item->ex_client;
new->ex_dentry = dget(item->ex_dentry);
new->ex_mnt = mntget(item->ex_mnt);
+ new->ex_path = NULL;
}
static void export_update(struct cache_head *cnew, struct cache_head *citem)
@@ -535,6 +543,8 @@
new->ex_anon_uid = item->ex_anon_uid;
new->ex_anon_gid = item->ex_anon_gid;
new->ex_fsid = item->ex_fsid;
+ new->ex_path = item->ex_path;
+ item->ex_path = NULL;
}
static struct cache_head *svc_export_alloc(void)