Merge branch 'for-2.6.38' of git://linux-nfs.org/~bfields/linux

* 'for-2.6.38' of git://linux-nfs.org/~bfields/linux: (62 commits)
  nfsd4: fix callback restarting
  nfsd: break lease on unlink, link, and rename
  nfsd4: break lease on nfsd setattr
  nfsd: don't support msnfs export option
  nfsd4: initialize cb_per_client
  nfsd4: allow restarting callbacks
  nfsd4: simplify nfsd4_cb_prepare
  nfsd4: give out delegations more quickly in 4.1 case
  nfsd4: add helper function to run callbacks
  nfsd4: make sure sequence flags are set after destroy_session
  nfsd4: re-probe callback on connection loss
  nfsd4: set sequence flag when backchannel is down
  nfsd4: keep finer-grained callback status
  rpc: allow xprt_class->setup to return a preexisting xprt
  rpc: keep backchannel xprt as long as server connection
  rpc: move sk_bc_xprt to svc_xprt
  nfsd4: allow backchannel recovery
  nfsd4: support BIND_CONN_TO_SESSION
  nfsd4: modify session list under cl_lock
  Documentation: fl_mylease no longer exists
  ...

Fix up conflicts in fs/nfsd/vfs.c with the vfs-scale work.  The
vfs-scale work touched some msnfs cases, and this merge removes support
for that entirely, so the conflict was trivial to resolve.

1 files changed, 30 insertions, 55 deletions

diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 230b79fbf005..a3c7f701395a 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -1,4 +1,3 @@
-#define MSNFS   /* HACK HACK */
 /*
  * File operations used by nfsd. Some of these have been ripped from
  * other parts of the kernel because they weren't exported, others
@@ -35,8 +34,8 @@
 #endif /* CONFIG_NFSD_V3 */
 
 #ifdef CONFIG_NFSD_V4
-#include <linux/nfs4_acl.h>
-#include <linux/nfsd_idmap.h>
+#include "acl.h"
+#include "idmap.h"
 #endif /* CONFIG_NFSD_V4 */
 
 #include "nfsd.h"
@@ -273,6 +272,13 @@ out:
         return err;
 }
 
+static int nfsd_break_lease(struct inode *inode)
+{
+        if (!S_ISREG(inode->i_mode))
+                return 0;
+        return break_lease(inode, O_WRONLY | O_NONBLOCK);
+}
+
 /*
  * Commit metadata changes to stable storage.
  */
@@ -375,16 +381,6 @@ nfsd_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp, struct iattr *iap,
                                 goto out;
                 }
 
-                /*
-                 * If we are changing the size of the file, then
-                 * we need to break all leases.
-                 */
-                host_err = break_lease(inode, O_WRONLY | O_NONBLOCK);
-                if (host_err == -EWOULDBLOCK)
-                        host_err = -ETIMEDOUT;
-                if (host_err) /* ENOMEM or EWOULDBLOCK */
-                        goto out_nfserr;
-
                 host_err = get_write_access(inode);
                 if (host_err)
                         goto out_nfserr;
@@ -425,7 +421,11 @@ nfsd_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp, struct iattr *iap,
 
         err = nfserr_notsync;
         if (!check_guard || guardtime == inode->i_ctime.tv_sec) {
+                host_err = nfsd_break_lease(inode);
+                if (host_err)
+                        goto out_nfserr;
                 fh_lock(fhp);
+
                 host_err = notify_change(dentry, iap);
                 err = nfserrno(host_err);
                 fh_unlock(fhp);
@@ -752,8 +752,6 @@ nfsd_open(struct svc_rqst *rqstp, struct svc_fh *fhp, int type,
          */
         if (!(access & NFSD_MAY_NOT_BREAK_LEASE))
                 host_err = break_lease(inode, O_NONBLOCK | ((access & NFSD_MAY_WRITE) ? O_WRONLY : 0));
-        if (host_err == -EWOULDBLOCK)
-                host_err = -ETIMEDOUT;
         if (host_err) /* NOMEM or WOULDBLOCK */
                 goto out_nfserr;
 
@@ -874,15 +872,6 @@ static int nfsd_direct_splice_actor(struct pipe_inode_info *pipe,
         return __splice_from_pipe(pipe, sd, nfsd_splice_actor);
 }
 
-static inline int svc_msnfs(struct svc_fh *ffhp)
-{
-#ifdef MSNFS
-        return (ffhp->fh_export->ex_flags & NFSEXP_MSNFS);
-#else
-        return 0;
-#endif
-}
-
 static __be32
 nfsd_vfs_read(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
               loff_t offset, struct kvec *vec, int vlen, unsigned long *count)
@@ -895,9 +884,6 @@ nfsd_vfs_read(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
         err = nfserr_perm;
         inode = file->f_path.dentry->d_inode;
 
-        if (svc_msnfs(fhp) && !lock_may_read(inode, offset, *count))
-                goto out;
-
         if (file->f_op->splice_read && rqstp->rq_splice_ok) {
                 struct splice_desc sd = {
                         .len            = 0,
@@ -922,7 +908,6 @@ nfsd_vfs_read(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
                 fsnotify_access(file);
         } else 
                 err = nfserrno(host_err);
-out:
         return err;
 }
 
@@ -987,14 +972,6 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
         int                     stable = *stablep;
         int                     use_wgather;
 
-#ifdef MSNFS
-        err = nfserr_perm;
-
-        if ((fhp->fh_export->ex_flags & NFSEXP_MSNFS) &&
-                (!lock_may_write(file->f_path.dentry->d_inode, offset, *cnt)))
-                goto out;
-#endif
-
         dentry = file->f_path.dentry;
         inode = dentry->d_inode;
         exp   = fhp->fh_export;
@@ -1045,7 +1022,6 @@ out_nfserr:
                 err = 0;
         else
                 err = nfserrno(host_err);
-out:
         return err;
 }
 
@@ -1665,6 +1641,12 @@ nfsd_link(struct svc_rqst *rqstp, struct svc_fh *ffhp,
                 err = nfserrno(host_err);
                 goto out_dput;
         }
+        err = nfserr_noent;
+        if (!dold->d_inode)
+                goto out_drop_write;
+        host_err = nfsd_break_lease(dold->d_inode);
+        if (host_err)
+                goto out_drop_write;
         host_err = vfs_link(dold, dirp, dnew);
         if (!host_err) {
                 err = nfserrno(commit_metadata(ffhp));
@@ -1676,6 +1658,7 @@ nfsd_link(struct svc_rqst *rqstp, struct svc_fh *ffhp,
                 else
                         err = nfserrno(host_err);
         }
+out_drop_write:
         mnt_drop_write(tfhp->fh_export->ex_path.mnt);
 out_dput:
         dput(dnew);
@@ -1750,12 +1733,6 @@ nfsd_rename(struct svc_rqst *rqstp, struct svc_fh *ffhp, char *fname, int flen,
         if (ndentry == trap)
                 goto out_dput_new;
 
-        if (svc_msnfs(ffhp) &&
-                ((odentry->d_count > 1) || (ndentry->d_count > 1))) {
-                        host_err = -EPERM;
-                        goto out_dput_new;
-        }
-
         host_err = -EXDEV;
         if (ffhp->fh_export->ex_path.mnt != tfhp->fh_export->ex_path.mnt)
                 goto out_dput_new;
@@ -1763,15 +1740,17 @@ nfsd_rename(struct svc_rqst *rqstp, struct svc_fh *ffhp, char *fname, int flen,
         if (host_err)
                 goto out_dput_new;
 
+        host_err = nfsd_break_lease(odentry->d_inode);
+        if (host_err)
+                goto out_drop_write;
         host_err = vfs_rename(fdir, odentry, tdir, ndentry);
         if (!host_err) {
                 host_err = commit_metadata(tfhp);
                 if (!host_err)
                         host_err = commit_metadata(ffhp);
         }
-
+out_drop_write:
         mnt_drop_write(ffhp->fh_export->ex_path.mnt);
-
  out_dput_new:
         dput(ndentry);
  out_dput_old:
@@ -1834,18 +1813,14 @@ nfsd_unlink(struct svc_rqst *rqstp, struct svc_fh *fhp, int type,
         if (host_err)
                 goto out_nfserr;
 
-        if (type != S_IFDIR) { /* It's UNLINK */
-#ifdef MSNFS
-                if ((fhp->fh_export->ex_flags & NFSEXP_MSNFS) &&
-                        (rdentry->d_count > 1)) {
-                        host_err = -EPERM;
-                } else
-#endif
+        host_err = nfsd_break_lease(rdentry->d_inode);
+        if (host_err)
+                goto out_put;
+        if (type != S_IFDIR)
                 host_err = vfs_unlink(dirp, rdentry);
-        } else { /* It's RMDIR */
+        else
                 host_err = vfs_rmdir(dirp, rdentry);
-        }
-
+out_put:
         dput(rdentry);
 
         if (!host_err)