Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6:
  fs: take the ACL checks to common code
  bury posix_acl_..._masq() variants
  kill boilerplates around posix_acl_create_masq()
  generic_acl: no need to clone acl just to push it to set_cached_acl()
  kill boilerplate around posix_acl_chmod_masq()
  reiserfs: cache negative ACLs for v1 stat format
  xfs: cache negative ACLs if there is no attribute fork
  9p: do no return 0 from ->check_acl without actually checking
  vfs: move ACL cache lookup into generic code
  CIFS: Fix oops while mounting with prefixpath
  xfs: Fix wrong return value of xfs_file_aio_write
  fix devtmpfs race
  caam: don't pass bogus S_IFCHR to debugfs_create_...()
  get rid of create_proc_entry() abuses - proc_mkdir() is there for purpose
  asus-wmi: ->is_visible() can't return negative
  fix jffs2 ACLs on big-endian with 16bit mode_t
  9p: close ACL leaks
  ocfs2_init_acl(): fix a leak
  VFS : mount lock scalability for internal mounts

5 files changed, 33 insertions, 70 deletions

diff --git a/fs/xfs/linux-2.6/xfs_acl.c b/fs/xfs/linux-2.6/xfs_acl.c
index cac48fe22ad..44ce5165680 100644
--- a/fs/xfs/linux-2.6/xfs_acl.c
+++ b/fs/xfs/linux-2.6/xfs_acl.c
@@ -114,6 +114,8 @@ xfs_get_acl(struct inode *inode, int type)
 	if (acl != ACL_NOT_CACHED)
 		return acl;
 
+	trace_xfs_get_acl(ip);
+
 	switch (type) {
 	case ACL_TYPE_ACCESS:
 		ea_name = SGI_ACL_FILE;
@@ -218,40 +220,6 @@ xfs_set_acl(struct inode *inode, int type, struct posix_acl *acl)
 	return error;
 }
 
-int
-xfs_check_acl(struct inode *inode, int mask)
-{
-	struct xfs_inode *ip;
-	struct posix_acl *acl;
-	int error = -EAGAIN;
-
-	ip = XFS_I(inode);
-	trace_xfs_check_acl(ip);
-
-	/*
-	 * If there is no attribute fork no ACL exists on this inode and
-	 * we can skip the whole exercise.
-	 */
-	if (!XFS_IFORK_Q(ip))
-		return -EAGAIN;
-
-	if (mask & MAY_NOT_BLOCK) {
-		if (!negative_cached_acl(inode, ACL_TYPE_ACCESS))
-			return -ECHILD;
-		return -EAGAIN;
-	}
-
-	acl = xfs_get_acl(inode, ACL_TYPE_ACCESS);
-	if (IS_ERR(acl))
-		return PTR_ERR(acl);
-	if (acl) {
-		error = posix_acl_permission(inode, acl, mask);
-		posix_acl_release(acl);
-	}
-
-	return error;
-}
-
 static int
 xfs_set_mode(struct inode *inode, mode_t mode)
 {
@@ -297,29 +265,23 @@ posix_acl_default_exists(struct inode *inode)
  * No need for i_mutex because the inode is not yet exposed to the VFS.
  */
 int
-xfs_inherit_acl(struct inode *inode, struct posix_acl *default_acl)
+xfs_inherit_acl(struct inode *inode, struct posix_acl *acl)
 {
-	struct posix_acl *clone;
-	mode_t mode;
+	mode_t mode = inode->i_mode;
 	int error = 0, inherit = 0;
 
 	if (S_ISDIR(inode->i_mode)) {
-		error = xfs_set_acl(inode, ACL_TYPE_DEFAULT, default_acl);
+		error = xfs_set_acl(inode, ACL_TYPE_DEFAULT, acl);
 		if (error)
-			return error;
+			goto out;
 	}
 
-	clone = posix_acl_clone(default_acl, GFP_KERNEL);
-	if (!clone)
-		return -ENOMEM;
-
-	mode = inode->i_mode;
-	error = posix_acl_create_masq(clone, &mode);
+	error = posix_acl_create(&acl, GFP_KERNEL, &mode);
 	if (error < 0)
-		goto out_release_clone;
+		return error;
 
 	/*
-	 * If posix_acl_create_masq returns a positive value we need to
+	 * If posix_acl_create returns a positive value we need to
 	 * inherit a permission that can't be represented using the Unix
 	 * mode bits and we actually need to set an ACL.
 	 */
@@ -328,20 +290,20 @@ xfs_inherit_acl(struct inode *inode, struct posix_acl *default_acl)
 
 	error = xfs_set_mode(inode, mode);
 	if (error)
-		goto out_release_clone;
+		goto out;
 
 	if (inherit)
-		error = xfs_set_acl(inode, ACL_TYPE_ACCESS, clone);
+		error = xfs_set_acl(inode, ACL_TYPE_ACCESS, acl);
 
- out_release_clone:
-	posix_acl_release(clone);
+out:
+	posix_acl_release(acl);
 	return error;
 }
 
 int
 xfs_acl_chmod(struct inode *inode)
 {
-	struct posix_acl *acl, *clone;
+	struct posix_acl *acl;
 	int error;
 
 	if (S_ISLNK(inode->i_mode))
@@ -351,16 +313,12 @@ xfs_acl_chmod(struct inode *inode)
 	if (IS_ERR(acl) || !acl)
 		return PTR_ERR(acl);
 
-	clone = posix_acl_clone(acl, GFP_KERNEL);
-	posix_acl_release(acl);
-	if (!clone)
-		return -ENOMEM;
-
-	error = posix_acl_chmod_masq(clone, inode->i_mode);
-	if (!error)
-		error = xfs_set_acl(inode, ACL_TYPE_ACCESS, clone);
+	error = posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode);
+	if (error)
+		return error;
 
-	posix_acl_release(clone);
+	error = xfs_set_acl(inode, ACL_TYPE_ACCESS, acl);
+	posix_acl_release(acl);
 	return error;
 }
 
diff --git a/fs/xfs/linux-2.6/xfs_file.c b/fs/xfs/linux-2.6/xfs_file.c
index cca00f49e09..825390e1c13 100644
--- a/fs/xfs/linux-2.6/xfs_file.c
+++ b/fs/xfs/linux-2.6/xfs_file.c
@@ -881,11 +881,14 @@ xfs_file_aio_write(
 	/* Handle various SYNC-type writes */
 	if ((file->f_flags & O_DSYNC) || IS_SYNC(inode)) {
 		loff_t end = pos + ret - 1;
+		int error;
 
 		xfs_rw_iunlock(ip, iolock);
-		ret = -xfs_file_fsync(file, pos, end,
+		error = xfs_file_fsync(file, pos, end,
 				      (file->f_flags & __O_SYNC) ? 0 : 1);
 		xfs_rw_ilock(ip, iolock);
+		if (error)
+			ret = error;
 	}
 
 out_unlock:
diff --git a/fs/xfs/linux-2.6/xfs_iops.c b/fs/xfs/linux-2.6/xfs_iops.c
index 501e4f63054..6544c3236bc 100644
--- a/fs/xfs/linux-2.6/xfs_iops.c
+++ b/fs/xfs/linux-2.6/xfs_iops.c
@@ -202,9 +202,9 @@ xfs_vn_mknod(
 
 	if (default_acl) {
 		error = -xfs_inherit_acl(inode, default_acl);
+		default_acl = NULL;
 		if (unlikely(error))
 			goto out_cleanup_inode;
-		posix_acl_release(default_acl);
 	}
 
 
@@ -1022,7 +1022,7 @@ xfs_vn_fiemap(
 }
 
 static const struct inode_operations xfs_inode_operations = {
-	.check_acl		= xfs_check_acl,
+	.get_acl		= xfs_get_acl,
 	.getattr		= xfs_vn_getattr,
 	.setattr		= xfs_vn_setattr,
 	.setxattr		= generic_setxattr,
@@ -1048,7 +1048,7 @@ static const struct inode_operations xfs_dir_inode_operations = {
 	.rmdir			= xfs_vn_unlink,
 	.mknod			= xfs_vn_mknod,
 	.rename			= xfs_vn_rename,
-	.check_acl		= xfs_check_acl,
+	.get_acl		= xfs_get_acl,
 	.getattr		= xfs_vn_getattr,
 	.setattr		= xfs_vn_setattr,
 	.setxattr		= generic_setxattr,
@@ -1073,7 +1073,7 @@ static const struct inode_operations xfs_dir_ci_inode_operations = {
 	.rmdir			= xfs_vn_unlink,
 	.mknod			= xfs_vn_mknod,
 	.rename			= xfs_vn_rename,
-	.check_acl		= xfs_check_acl,
+	.get_acl		= xfs_get_acl,
 	.getattr		= xfs_vn_getattr,
 	.setattr		= xfs_vn_setattr,
 	.setxattr		= generic_setxattr,
@@ -1086,7 +1086,7 @@ static const struct inode_operations xfs_symlink_inode_operations = {
 	.readlink		= generic_readlink,
 	.follow_link		= xfs_vn_follow_link,
 	.put_link		= xfs_vn_put_link,
-	.check_acl		= xfs_check_acl,
+	.get_acl		= xfs_get_acl,
 	.getattr		= xfs_vn_getattr,
 	.setattr		= xfs_vn_setattr,
 	.setxattr		= generic_setxattr,
@@ -1194,6 +1194,10 @@ xfs_setup_inode(
 		break;
 	}
 
+	/* if there is no attribute fork no ACL can exist on this inode */
+	if (!XFS_IFORK_Q(ip))
+		cache_no_acl(inode);
+
 	xfs_iflags_clear(ip, XFS_INEW);
 	barrier();
 
diff --git a/fs/xfs/linux-2.6/xfs_trace.h b/fs/xfs/linux-2.6/xfs_trace.h
index fda0708ef2e..690fc7a7bd7 100644
--- a/fs/xfs/linux-2.6/xfs_trace.h
+++ b/fs/xfs/linux-2.6/xfs_trace.h
@@ -571,7 +571,7 @@ DEFINE_INODE_EVENT(xfs_alloc_file_space);
 DEFINE_INODE_EVENT(xfs_free_file_space);
 DEFINE_INODE_EVENT(xfs_readdir);
 #ifdef CONFIG_XFS_POSIX_ACL
-DEFINE_INODE_EVENT(xfs_check_acl);
+DEFINE_INODE_EVENT(xfs_get_acl);
 #endif
 DEFINE_INODE_EVENT(xfs_vm_bmap);
 DEFINE_INODE_EVENT(xfs_file_ioctl);
diff --git a/fs/xfs/xfs_acl.h b/fs/xfs/xfs_acl.h
index 0135e2a669d..2c656ef4947 100644
--- a/fs/xfs/xfs_acl.h
+++ b/fs/xfs/xfs_acl.h
@@ -42,7 +42,6 @@ struct xfs_acl {
 #define SGI_ACL_DEFAULT_SIZE	(sizeof(SGI_ACL_DEFAULT)-1)
 
 #ifdef CONFIG_XFS_POSIX_ACL
-extern int xfs_check_acl(struct inode *inode, int mask);
 extern struct posix_acl *xfs_get_acl(struct inode *inode, int type);
 extern int xfs_inherit_acl(struct inode *inode, struct posix_acl *default_acl);
 extern int xfs_acl_chmod(struct inode *inode);
@@ -52,7 +51,6 @@ extern int posix_acl_default_exists(struct inode *inode);
 extern const struct xattr_handler xfs_xattr_acl_access_handler;
 extern const struct xattr_handler xfs_xattr_acl_default_handler;
 #else
-# define xfs_check_acl					NULL
 # define xfs_get_acl(inode, type)			NULL
 # define xfs_inherit_acl(inode, default_acl)		0
 # define xfs_acl_chmod(inode)				0