block: rename CONFIG_LBD to CONFIG_LBDAF

Follow-up to "block: enable by default support for large devices
and files on 32-bit archs".

Rename CONFIG_LBD to CONFIG_LBDAF to:
- allow update of existing [def]configs for "default y" change
- reflect that it is used also for large files support nowadays

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

Documentation/SubmitChecklist

@@ -54,7 +54,7 @@ kernel patches.
     CONFIG_PREEMPT.
 
 14: If the patch affects IO/Disk, etc: has been tested with and without
-    CONFIG_LBD.
+    CONFIG_LBDAF.
 
 15: All codepaths have been exercised with all lockdep features enabled.
 

Documentation/ja_JP/SubmitChecklist

@@ -75,7 +75,7 @@ Linux カーネルパッチ投稿者向けチェックリスト
     ビルドした上、動作確認を行ってください。
 
 14: もしパッチがディスクのI/O性能などに影響を与えるようであれば、
-    'CONFIG_LBD'オプションを有効にした場合と無効にした場合の両方で
+    'CONFIG_LBDAF'オプションを有効にした場合と無効にした場合の両方で
     テストを実施してみてください。
 
 15: lockdepの機能を全て有効にした上で、全てのコードパスを評価してください。

block/Kconfig

@@ -23,8 +23,8 @@ menuconfig BLOCK
 
 if BLOCK
 
-config LBD
+config LBDAF
-	bool "Support for large block devices and files"
+	bool "Support for large (2TB+) block devices and files"
 	depends on !64BIT
 	default y
 	help

drivers/md/dm-exception-store.h

@@ -111,7 +111,7 @@ struct dm_exception_store {
 /*
  * Funtions to manipulate consecutive chunks
  */
-#  if defined(CONFIG_LBD) || (BITS_PER_LONG == 64)
+#  if defined(CONFIG_LBDAF) || (BITS_PER_LONG == 64)
 #    define DM_CHUNK_CONSECUTIVE_BITS 8
 #    define DM_CHUNK_NUMBER_BITS 56
 

fs/ext3/resize.c

@@ -990,7 +990,7 @@ int ext3_group_extend(struct super_block *sb, struct ext3_super_block *es,
 			sb->s_id, n_blocks_count);
 		if (sizeof(sector_t) < 8)
 			ext3_warning(sb, __func__,
-			"CONFIG_LBD not enabled\n");
+			"CONFIG_LBDAF not enabled\n");
 		return -EINVAL;
 	}
 

fs/ext3/super.c

@@ -1812,7 +1812,7 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent)
 		printk(KERN_ERR "EXT3-fs: filesystem on %s:"
 			" too large to mount safely\n", sb->s_id);
 		if (sizeof(sector_t) < 8)
-			printk(KERN_WARNING "EXT3-fs: CONFIG_LBD not "
+			printk(KERN_WARNING "EXT3-fs: CONFIG_LBDAF not "
 					"enabled\n");
 		goto failed_mount;
 	}

fs/ext4/resize.c

@@ -1002,7 +1002,7 @@ int ext4_group_extend(struct super_block *sb, struct ext4_super_block *es,
 			" too large to resize to %llu blocks safely\n",
 			sb->s_id, n_blocks_count);
 		if (sizeof(sector_t) < 8)
-			ext4_warning(sb, __func__, "CONFIG_LBD not enabled");
+			ext4_warning(sb, __func__, "CONFIG_LBDAF not enabled");
 		return -EINVAL;
 	}
 

fs/ext4/super.c

@@ -1957,7 +1957,7 @@ static loff_t ext4_max_size(int blkbits, int has_huge_files)
 	/* small i_blocks in vfs inode? */
 	if (!has_huge_files || sizeof(blkcnt_t) < sizeof(u64)) {
 		/*
-		 * CONFIG_LBD is not enabled implies the inode
+		 * CONFIG_LBDAF is not enabled implies the inode
 		 * i_block represent total blocks in 512 bytes
 		 * 32 == size of vfs inode i_blocks * 8
 		 */
@@ -2000,7 +2000,7 @@ static loff_t ext4_max_bitmap_size(int bits, int has_huge_files)
 
 	if (!has_huge_files || sizeof(blkcnt_t) < sizeof(u64)) {
 		/*
-		 * !has_huge_files or CONFIG_LBD not enabled implies that
+		 * !has_huge_files or CONFIG_LBDAF not enabled implies that
 		 * the inode i_block field represents total file blocks in
 		 * 2^32 512-byte sectors == size of vfs inode i_blocks * 8
 		 */
@@ -2436,13 +2436,13 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
 	if (has_huge_files) {
 		/*
 		 * Large file size enabled file system can only be
-		 * mount if kernel is build with CONFIG_LBD
+		 * mount if kernel is build with CONFIG_LBDAF
 		 */
 		if (sizeof(root->i_blocks) < sizeof(u64) &&
 				!(sb->s_flags & MS_RDONLY)) {
 			ext4_msg(sb, KERN_ERR, "Filesystem with huge "
 					"files cannot be mounted read-write "
-					"without CONFIG_LBD");
+					"without CONFIG_LBDAF");
 			goto failed_mount;
 		}
 	}
@@ -2566,7 +2566,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
 		ext4_msg(sb, KERN_ERR, "filesystem"
 			" too large to mount safely");
 		if (sizeof(sector_t) < 8)
-			ext4_msg(sb, KERN_WARNING, "CONFIG_LBD not enabled");
+			ext4_msg(sb, KERN_WARNING, "CONFIG_LBDAF not enabled");
 		goto failed_mount;
 	}
 

fs/gfs2/Kconfig

@@ -1,6 +1,6 @@
 config GFS2_FS
 	tristate "GFS2 file system support"
-	depends on EXPERIMENTAL && (64BIT || LBD)
+	depends on EXPERIMENTAL && (64BIT || LBDAF)
 	select DLM if GFS2_FS_LOCKING_DLM
 	select CONFIGFS_FS if GFS2_FS_LOCKING_DLM
 	select SYSFS if GFS2_FS_LOCKING_DLM

fs/ocfs2/super.c

@@ -552,7 +552,7 @@ static unsigned long long ocfs2_max_file_offset(unsigned int bbits,
 	 */
 
 #if BITS_PER_LONG == 32
-# if defined(CONFIG_LBD)
+# if defined(CONFIG_LBDAF)
 	BUILD_BUG_ON(sizeof(sector_t) != 8);
 	/*
 	 * We might be limited by page cache size.

fs/xfs/linux-2.6/xfs_linux.h

@@ -24,7 +24,7 @@
  * XFS_BIG_BLKNOS needs block layer disk addresses to be 64 bits.
  * XFS_BIG_INUMS requires XFS_BIG_BLKNOS to be set.
  */
-#if defined(CONFIG_LBD) || (BITS_PER_LONG == 64)
+#if defined(CONFIG_LBDAF) || (BITS_PER_LONG == 64)
 # define XFS_BIG_BLKNOS	1
 # define XFS_BIG_INUMS	1
 #else

fs/xfs/linux-2.6/xfs_super.c

@@ -616,7 +616,7 @@ xfs_max_file_offset(
 	 */
 
 #if BITS_PER_LONG == 32
-# if defined(CONFIG_LBD)
+# if defined(CONFIG_LBDAF)
 	ASSERT(sizeof(sector_t) == 8);
 	pagefactor = PAGE_CACHE_SIZE;
 	bitshift = BITS_PER_LONG;

include/linux/kernel.h

@@ -58,7 +58,7 @@ extern const char linux_proc_banner[];
 #define _RET_IP_		(unsigned long)__builtin_return_address(0)
 #define _THIS_IP_  ({ __label__ __here; __here: (unsigned long)&&__here; })
 
-#ifdef CONFIG_LBD
+#ifdef CONFIG_LBDAF
 # include <asm/div64.h>
 # define sector_div(a, b) do_div(a, b)
 #else

include/linux/types.h

@@ -131,7 +131,7 @@ typedef		__s64		int64_t;
  *
  * blkcnt_t is the type of the inode's block count.
  */
-#ifdef CONFIG_LBD
+#ifdef CONFIG_LBDAF
 typedef u64 sector_t;
 typedef u64 blkcnt_t;
 #else