From: Marc Eshel <eshel@xxxxxxxxxxxxxxx> - unquoted
Convert NFSv4 to the new lock interface. We don't define any callback for now,
so we're not taking advantage of the asynchronous feature--that's less critical
for the multi-threaded nfsd then it is for the single-threaded lockd. But this
does allow a cluster filesystems to export cluster-coherent locking to NFS.
Note that it's cluster filesystems that are the issue--of the filesystems that
define lock methods (nfs, cifs, etc.), most are not exportable by nfsd.
Signed-off-by: J. Bruce Fields <bfields@xxxxxxxxxxxxxx>
---
fs/nfsd/nfs4state.c | 23 ++++++++++++++++-------
1 files changed, 16 insertions(+), 7 deletions(-)
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 9de89df..5d5a454 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -50,6 +50,7 @@
#include <linux/nfsd/xdr4.h>
#include <linux/namei.h>
#include <linux/mutex.h>
+#include <linux/lockd/bind.h>
#define NFSDDBG_FACILITY NFSDDBG_PROC
@@ -2772,7 +2773,7 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
* locks_copy_lock: */
conflock.fl_ops = NULL;
conflock.fl_lmops = NULL;
- err = posix_lock_file_conf(filp, &file_lock, &conflock);
+ err = vfs_lock_file_conf(filp, &file_lock, &conflock);
switch (-err) {
case 0: /* success! */
update_stateid(&lock_stp->st_stateid);
@@ -2789,7 +2790,7 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
status = nfserr_deadlock;
break;
default:
- dprintk("NFSD: nfsd4_lock: posix_lock_file_conf() failed! status %d\n",err);
+ dprintk("NFSD: nfsd4_lock: vfs_lock_file_conf() failed! status %d\n",err);
status = nfserr_resource;
break;
}
@@ -2815,6 +2816,7 @@ nfsd4_lockt(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
struct file file;
struct file_lock file_lock;
struct file_lock conflock;
+ int error;
__be32 status;
if (nfs4_in_grace())
@@ -2870,16 +2872,23 @@ nfsd4_lockt(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
nfs4_transform_lock_offset(&file_lock);
- /* posix_test_lock uses the struct file _only_ to resolve the inode.
+ /* vfs_test_lock uses the struct file _only_ to resolve the inode.
* since LOCKT doesn't require an OPEN, and therefore a struct
- * file may not exist, pass posix_test_lock a struct file with
+ * file may not exist, pass vfs_test_lock a struct file with
* only the dentry:inode set.
*/
memset(&file, 0, sizeof (struct file));
file.f_path.dentry = cstate->current_fh.fh_dentry;
status = nfs_ok;
- if (posix_test_lock(&file, &file_lock, &conflock)) {
+ conflock.fl_ops = NULL;
+ conflock.fl_lmops = NULL;
+ error = vfs_test_lock(&file, &file_lock, &conflock);
+ if (error) {
+ status = nfserrno(error);
+ goto out;
+ }
+ if (conflock.fl_type != F_UNLCK) {
status = nfserr_denied;
nfs4_set_lock_denied(&conflock, &lockt->lt_denied);
}
@@ -2934,9 +2943,9 @@ nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
/*
* Try to unlock the file in the VFS.
*/
- err = posix_lock_file(filp, &file_lock);
+ err = vfs_lock_file(filp, F_SETLK, &file_lock);
if (err) {
- dprintk("NFSD: nfs4_locku: posix_lock_file failed!\n");
+ dprintk("NFSD: nfs4_locku: vfs_lock_file failed!\n");
goto out_nfserr;
}
/*
--
1.5.0.rc1.g72fe
-
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