5 files changed, 33 insertions, 16 deletions
diff --git a/include/asm-generic/fcntl.h b/include/asm-generic/fcntl.h
index 495dc8af4044..681ddf3e844c 100644
--- a/include/asm-generic/fcntl.h
+++ b/include/asm-generic/fcntl.h
@@ -3,8 +3,6 @@
 
 #include <linux/types.h>
 
-/* open/fcntl - O_SYNC is only implemented on blocks devices and on files
-   located on an ext2 file system */
 #define O_ACCMODE	00000003
 #define O_RDONLY	00000000
 #define O_WRONLY	00000001
@@ -27,8 +25,8 @@
 #ifndef O_NONBLOCK
 #define O_NONBLOCK	00004000
 #endif
-#ifndef O_SYNC
-#define O_SYNC		00010000
+#ifndef O_DSYNC
+#define O_DSYNC		00010000	/* used to be O_SYNC, see below */
 #endif
 #ifndef FASYNC
 #define FASYNC		00020000	/* fcntl, for BSD compatibility */
@@ -51,6 +49,25 @@
 #ifndef O_CLOEXEC
 #define O_CLOEXEC	02000000	/* set close_on_exec */
 #endif
+
+/*
+ * Before Linux 2.6.32 only O_DSYNC semantics were implemented, but using
+ * the O_SYNC flag.  We continue to use the existing numerical value
+ * for O_DSYNC semantics now, but using the correct symbolic name for it.
+ * This new value is used to request true Posix O_SYNC semantics.  It is
+ * defined in this strange way to make sure applications compiled against
+ * new headers get at least O_DSYNC semantics on older kernels.
+ *
+ * This has the nice side-effect that we can simply test for O_DSYNC
+ * wherever we do not care if O_DSYNC or O_SYNC is used.
+ *
+ * Note: __O_SYNC must never be used directly.
+ */
+#ifndef O_SYNC
+#define __O_SYNC	04000000
+#define O_SYNC		(__O_SYNC|O_DSYNC)
+#endif
+
 #ifndef O_NDELAY
 #define O_NDELAY	O_NONBLOCK
 #endif
diff --git a/include/linux/ext2_fs.h b/include/linux/ext2_fs.h
index 121720d74e15..2dfa7076e8b6 100644
--- a/include/linux/ext2_fs.h
+++ b/include/linux/ext2_fs.h
@@ -565,14 +565,14 @@ struct ext2_dir_entry_2 {
  * other bits are reserved for now.
  */
 enum {
-	EXT2_FT_UNKNOWN,
-	EXT2_FT_REG_FILE,
-	EXT2_FT_DIR,
-	EXT2_FT_CHRDEV,
-	EXT2_FT_BLKDEV,
-	EXT2_FT_FIFO,
-	EXT2_FT_SOCK,
-	EXT2_FT_SYMLINK,
+	EXT2_FT_UNKNOWN		= 0,
+	EXT2_FT_REG_FILE	= 1,
+	EXT2_FT_DIR		= 2,
+	EXT2_FT_CHRDEV		= 3,
+	EXT2_FT_BLKDEV		= 4,
+	EXT2_FT_FIFO		= 5,
+	EXT2_FT_SOCK		= 6,
+	EXT2_FT_SYMLINK		= 7,
 	EXT2_FT_MAX
 };
 
diff --git a/include/linux/ext3_fs.h b/include/linux/ext3_fs.h
index 7499b3667798..6b049030fbe6 100644
--- a/include/linux/ext3_fs.h
+++ b/include/linux/ext3_fs.h
@@ -918,6 +918,8 @@ extern void ext3_abort (struct super_block *, const char *, const char *, ...)
 	__attribute__ ((format (printf, 3, 4)));
 extern void ext3_warning (struct super_block *, const char *, const char *, ...)
 	__attribute__ ((format (printf, 3, 4)));
+extern void ext3_msg(struct super_block *, const char *, const char *, ...)
+	__attribute__ ((format (printf, 3, 4)));
 extern void ext3_update_dynamic_rev (struct super_block *sb);
 
 #define ext3_std_error(sb, errno)				\
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 2620a8c63571..cbe468dcda97 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2090,8 +2090,6 @@ extern int filemap_fdatawait_range(struct address_space *, loff_t lstart,
 extern int filemap_write_and_wait(struct address_space *mapping);
 extern int filemap_write_and_wait_range(struct address_space *mapping,
 				        loff_t lstart, loff_t lend);
-extern int wait_on_page_writeback_range(struct address_space *mapping,
-				pgoff_t start, pgoff_t end);
 extern int __filemap_fdatawrite_range(struct address_space *mapping,
 				loff_t start, loff_t end, int sync_mode);
 extern int filemap_fdatawrite_range(struct address_space *mapping,
diff --git a/include/linux/quota.h b/include/linux/quota.h
index 78c48895b12a..c878aa8aa84a 100644
--- a/include/linux/quota.h
+++ b/include/linux/quota.h
@@ -334,7 +334,7 @@ struct quotactl_ops {
 
 struct quota_format_type {
 	int qf_fmt_id;	/* Quota format id */
-	struct quota_format_ops *qf_ops;	/* Operations of format */
+	const struct quota_format_ops *qf_ops;	/* Operations of format */
 	struct module *qf_owner;		/* Module implementing quota format */
 	struct quota_format_type *qf_next;
 };
@@ -383,7 +383,7 @@ struct quota_info {
 	struct rw_semaphore dqptr_sem;		/* serialize ops using quota_info struct, pointers from inode to dquots */
 	struct inode *files[MAXQUOTAS];		/* inodes of quotafiles */
 	struct mem_dqinfo info[MAXQUOTAS];	/* Information for each quota type */
-	struct quota_format_ops *ops[MAXQUOTAS];	/* Operations for each type */
+	const struct quota_format_ops *ops[MAXQUOTAS];	/* Operations for each type */
 };
 
 int register_quota_format(struct quota_format_type *fmt);