Merge with /pub/scm/linux/kernel/git/torvalds/linux-2.6.git

[linux-2.6-omap-h63xx.git] / fs / nfs / file.c

diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index 57d3e77d97ee1eb2e9c291695078d8b06f902d24..7a79fbe9f5394c67dd53b01526d37e29fae0ce4e 100644 (file)
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -433,11 +433,7 @@ static int do_unlk(struct file *filp, int cmd, struct file_lock *fl)
         * Flush all pending writes before doing anything
         * with locks..
         */
-       filemap_fdatawrite(filp->f_mapping);
-       down(&inode->i_sem);
-       nfs_wb_all(inode);
-       up(&inode->i_sem);
-       filemap_fdatawait(filp->f_mapping);
+       nfs_sync_mapping(filp->f_mapping);
 
        /* NOTE: special case
         *      If we're signalled while cleaning up locks on process exit, we
@@ -465,15 +461,8 @@ static int do_setlk(struct file *filp, int cmd, struct file_lock *fl)
         * Flush all pending writes before doing anything
         * with locks..
         */
-       status = filemap_fdatawrite(filp->f_mapping);
-       if (status == 0) {
-               down(&inode->i_sem);
-               status = nfs_wb_all(inode);
-               up(&inode->i_sem);
-               if (status == 0)
-                       status = filemap_fdatawait(filp->f_mapping);
-       }
-       if (status < 0)
+       status = nfs_sync_mapping(filp->f_mapping);
+       if (status != 0)
                goto out;
 
        lock_kernel();
@@ -497,11 +486,7 @@ static int do_setlk(struct file *filp, int cmd, struct file_lock *fl)
         * Make sure we clear the cache whenever we try to get the lock.
         * This makes locking act as a cache coherency point.
         */
-       filemap_fdatawrite(filp->f_mapping);
-       down(&inode->i_sem);
-       nfs_wb_all(inode);      /* we may have slept */
-       up(&inode->i_sem);
-       filemap_fdatawait(filp->f_mapping);
+       nfs_sync_mapping(filp->f_mapping);
        nfs_zap_caches(inode);
 out:
        rpc_clnt_sigunmask(NFS_CLIENT(inode), &oldset);
@@ -524,7 +509,8 @@ static int nfs_lock(struct file *filp, int cmd, struct file_lock *fl)
                return -EINVAL;
 
        /* No mandatory locks over NFS */
-       if ((inode->i_mode & (S_ISGID | S_IXGRP)) == S_ISGID)
+       if ((inode->i_mode & (S_ISGID | S_IXGRP)) == S_ISGID &&
+           fl->fl_type != F_UNLCK)
                return -ENOLCK;
 
        if (IS_GETLK(cmd))