X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=fs%2Flocks.c;h=44d9a6a7ec50caad376e36d721a3a42bc5028948;hb=ba911a4d16fb2dd562f5595731fc96bc8c4929d7;hp=d83fab1b77b56a4e065d6858440903ed6d70770e;hpb=d2532dd20a126020de407c1c2476a75b53fce7ac;p=linux-2.6-omap-h63xx.git

diff --git a/fs/locks.c b/fs/locks.c
index d83fab1b77b..44d9a6a7ec5 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -127,7 +127,6 @@
 #include <linux/rcupdate.h>
 #include <linux/pid_namespace.h>
 
-#include <asm/semaphore.h>
 #include <asm/uaccess.h>
 
 #define IS_POSIX(fl)	(fl->fl_flags & FL_POSIX)
@@ -225,7 +224,7 @@ static void locks_copy_private(struct file_lock *new, struct file_lock *fl)
 /*
  * Initialize a new lock from an existing file_lock structure.
  */
-static void __locks_copy_lock(struct file_lock *new, const struct file_lock *fl)
+void __locks_copy_lock(struct file_lock *new, const struct file_lock *fl)
 {
 	new->fl_owner = fl->fl_owner;
 	new->fl_pid = fl->fl_pid;
@@ -237,6 +236,7 @@ static void __locks_copy_lock(struct file_lock *new, const struct file_lock *fl)
 	new->fl_ops = NULL;
 	new->fl_lmops = NULL;
 }
+EXPORT_SYMBOL(__locks_copy_lock);
 
 void locks_copy_lock(struct file_lock *new, struct file_lock *fl)
 {
@@ -834,7 +834,7 @@ static int __posix_lock_file(struct inode *inode, struct file_lock *request, str
 			if (!posix_locks_conflict(request, fl))
 				continue;
 			if (conflock)
-				locks_copy_lock(conflock, fl);
+				__locks_copy_lock(conflock, fl);
 			error = -EAGAIN;
 			if (!(request->fl_flags & FL_SLEEP))
 				goto out;
@@ -1368,18 +1368,20 @@ int generic_setlease(struct file *filp, long arg, struct file_lock **flp)
 
 	lease = *flp;
 
-	error = -EAGAIN;
-	if ((arg == F_RDLCK) && (atomic_read(&inode->i_writecount) > 0))
-		goto out;
-	if ((arg == F_WRLCK)
-	    && ((atomic_read(&dentry->d_count) > 1)
-		|| (atomic_read(&inode->i_count) > 1)))
-		goto out;
+	if (arg != F_UNLCK) {
+		error = -ENOMEM;
+		new_fl = locks_alloc_lock();
+		if (new_fl == NULL)
+			goto out;
 
-	error = -ENOMEM;
-	new_fl = locks_alloc_lock();
-	if (new_fl == NULL)
-		goto out;
+		error = -EAGAIN;
+		if ((arg == F_RDLCK) && (atomic_read(&inode->i_writecount) > 0))
+			goto out;
+		if ((arg == F_WRLCK)
+		    && ((atomic_read(&dentry->d_count) > 1)
+			|| (atomic_read(&inode->i_count) > 1)))
+			goto out;
+	}
 
 	/*
 	 * At this point, we know that if there is an exclusive
@@ -1405,6 +1407,7 @@ int generic_setlease(struct file *filp, long arg, struct file_lock **flp)
 			rdlease_count++;
 	}
 
+	error = -EAGAIN;
 	if ((arg == F_RDLCK && (wrlease_count > 0)) ||
 	    (arg == F_WRLCK && ((rdlease_count + wrlease_count) > 0)))
 		goto out;
@@ -1491,8 +1494,7 @@ EXPORT_SYMBOL_GPL(vfs_setlease);
 int fcntl_setlease(unsigned int fd, struct file *filp, long arg)
 {
 	struct file_lock fl, *flp = &fl;
-	struct dentry *dentry = filp->f_path.dentry;
-	struct inode *inode = dentry->d_inode;
+	struct inode *inode = filp->f_path.dentry->d_inode;
 	int error;
 
 	locks_init_lock(&fl);
@@ -1801,17 +1803,21 @@ again:
 	if (error)
 		goto out;
 
-	for (;;) {
-		error = vfs_lock_file(filp, cmd, file_lock, NULL);
-		if (error != -EAGAIN || cmd == F_SETLK)
-			break;
-		error = wait_event_interruptible(file_lock->fl_wait,
-				!file_lock->fl_next);
-		if (!error)
-			continue;
+	if (filp->f_op && filp->f_op->lock != NULL)
+		error = filp->f_op->lock(filp, cmd, file_lock);
+	else {
+		for (;;) {
+			error = posix_lock_file(filp, file_lock, NULL);
+			if (error != -EAGAIN || cmd == F_SETLK)
+				break;
+			error = wait_event_interruptible(file_lock->fl_wait,
+					!file_lock->fl_next);
+			if (!error)
+				continue;
 
-		locks_delete_block(file_lock);
-		break;
+			locks_delete_block(file_lock);
+			break;
+		}
 	}
 
 	/*
@@ -1925,17 +1931,21 @@ again:
 	if (error)
 		goto out;
 
-	for (;;) {
-		error = vfs_lock_file(filp, cmd, file_lock, NULL);
-		if (error != -EAGAIN || cmd == F_SETLK64)
-			break;
-		error = wait_event_interruptible(file_lock->fl_wait,
-				!file_lock->fl_next);
-		if (!error)
-			continue;
+	if (filp->f_op && filp->f_op->lock != NULL)
+		error = filp->f_op->lock(filp, cmd, file_lock);
+	else {
+		for (;;) {
+			error = posix_lock_file(filp, file_lock, NULL);
+			if (error != -EAGAIN || cmd == F_SETLK64)
+				break;
+			error = wait_event_interruptible(file_lock->fl_wait,
+					!file_lock->fl_next);
+			if (!error)
+				continue;
 
-		locks_delete_block(file_lock);
-		break;
+			locks_delete_block(file_lock);
+			break;
+		}
 	}
 
 	/*