Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel…

…/git/tytso/ext4

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (48 commits)
  ext4: fix hot spins in mballoc after err_freebuddy and err_freemeta
  ext4: fix test ext_generic_write_end() copied return value
  ext3: fix test ext_generic_write_end() copied return value
  ext4: Move mballoc headers/structures to a seperate header file mballoc.h
  ext4: cleanup for compiling mballoc with verification and debugging #defines
  ext4: don't use ext4_error in ext4_check_descriptors
  ext4: mark inode dirty after initializing the extent tree
  ext4: update ctime and mtime for truncate with extents.
  ext4: Don't do GFP_NOFS allocations after taking ext4_lock_group
  ext4: move headers out of include/linux
  ext4: fix wrong gfp type under transaction
  ext4: Fix hang on umount with quotas when journal is aborted
  ext4: Fix update of mtime and ctime on rename
  jdb2: replace remaining __FUNCTION__ occurrences
  ext4: replace remaining __FUNCTION__ occurrences
  jbd2: only create debugfs and stats entries if init is successful
  jbd2: fix kernel-doc notation
  jbd2: replace potentially false assertion with if block
  jbd2: eliminate duplicated code in revocation table init/destroy functions
  jbd2: tidy up revoke cache initialisation and destruction
  ...

arch/arm/mm/mmu.c

@@ -35,6 +35,7 @@ extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
  * zero-initialized data and COW.
  */
 struct page *empty_zero_page;
+EXPORT_SYMBOL(empty_zero_page);
 
 /*
  * The pmd table for the upper-most set of pages.

arch/m68k/mm/init.c

@@ -69,6 +69,7 @@ void __init m68k_setup_node(int node)
  */
 
 void *empty_zero_page;
+EXPORT_SYMBOL(empty_zero_page);
 
 void show_mem(void)
 {

arch/sparc/kernel/sparc_ksyms.c

@@ -282,3 +282,5 @@ EXPORT_SYMBOL(do_BUG);
 
 /* Sun Power Management Idle Handler */
 EXPORT_SYMBOL(pm_idle);
+
+EXPORT_SYMBOL(empty_zero_page);

arch/sparc64/mm/init.c

@@ -160,6 +160,7 @@ extern unsigned int sparc_ramdisk_image;
 extern unsigned int sparc_ramdisk_size;
 
 struct page *mem_map_zero __read_mostly;
+EXPORT_SYMBOL(mem_map_zero);
 
 unsigned int sparc64_highest_unlocked_tlb_ent __read_mostly;
 

fs/ext3/inode.c

@@ -1261,10 +1261,11 @@ static int ext3_ordered_write_end(struct file *file,
 		new_i_size = pos + copied;
 		if (new_i_size > EXT3_I(inode)->i_disksize)
 			EXT3_I(inode)->i_disksize = new_i_size;
-		copied = ext3_generic_write_end(file, mapping, pos, len, copied,
+		ret2 = ext3_generic_write_end(file, mapping, pos, len, copied,
 							page, fsdata);
-		if (copied < 0)
-			ret = copied;
+		copied = ret2;
+		if (ret2 < 0)
+			ret = ret2;
 	}
 	ret2 = ext3_journal_stop(handle);
 	if (!ret)
@@ -1289,10 +1290,11 @@ static int ext3_writeback_write_end(struct file *file,
 	if (new_i_size > EXT3_I(inode)->i_disksize)
 		EXT3_I(inode)->i_disksize = new_i_size;
 
-	copied = ext3_generic_write_end(file, mapping, pos, len, copied,
+	ret2 = ext3_generic_write_end(file, mapping, pos, len, copied,
 							page, fsdata);
-	if (copied < 0)
-		ret = copied;
+	copied = ret2;
+	if (ret2 < 0)
+		ret = ret2;
 
 	ret2 = ext3_journal_stop(handle);
 	if (!ret)

fs/ext4/acl.c

@@ -9,8 +9,8 @@
 #include <linux/slab.h>
 #include <linux/capability.h>
 #include <linux/fs.h>
-#include <linux/ext4_jbd2.h>
-#include <linux/ext4_fs.h>
+#include "ext4_jbd2.h"
+#include "ext4.h"
 #include "xattr.h"
 #include "acl.h"
 
@@ -37,7 +37,7 @@ ext4_acl_from_disk(const void *value, size_t size)
 		return ERR_PTR(-EINVAL);
 	if (count == 0)
 		return NULL;
-	acl = posix_acl_alloc(count, GFP_KERNEL);
+	acl = posix_acl_alloc(count, GFP_NOFS);
 	if (!acl)
 		return ERR_PTR(-ENOMEM);
 	for (n=0; n < count; n++) {
@@ -91,7 +91,7 @@ ext4_acl_to_disk(const struct posix_acl *acl, size_t *size)
 
 	*size = ext4_acl_size(acl->a_count);
 	ext_acl = kmalloc(sizeof(ext4_acl_header) + acl->a_count *
-			sizeof(ext4_acl_entry), GFP_KERNEL);
+			sizeof(ext4_acl_entry), GFP_NOFS);
 	if (!ext_acl)
 		return ERR_PTR(-ENOMEM);
 	ext_acl->a_version = cpu_to_le32(EXT4_ACL_VERSION);
@@ -187,7 +187,7 @@ ext4_get_acl(struct inode *inode, int type)
 	}
 	retval = ext4_xattr_get(inode, name_index, "", NULL, 0);
 	if (retval > 0) {
-		value = kmalloc(retval, GFP_KERNEL);
+		value = kmalloc(retval, GFP_NOFS);
 		if (!value)
 			return ERR_PTR(-ENOMEM);
 		retval = ext4_xattr_get(inode, name_index, "", value, retval);
@@ -335,7 +335,7 @@ ext4_init_acl(handle_t *handle, struct inode *inode, struct inode *dir)
 			if (error)
 				goto cleanup;
 		}
-		clone = posix_acl_clone(acl, GFP_KERNEL);
+		clone = posix_acl_clone(acl, GFP_NOFS);
 		error = -ENOMEM;
 		if (!clone)
 			goto cleanup;

fs/ext4/balloc.c

@@ -15,12 +15,12 @@
 #include <linux/capability.h>
 #include <linux/fs.h>
 #include <linux/jbd2.h>
-#include <linux/ext4_fs.h>
-#include <linux/ext4_jbd2.h>
 #include <linux/quotaops.h>
 #include <linux/buffer_head.h>
-
+#include "ext4.h"
+#include "ext4_jbd2.h"
 #include "group.h"
+
 /*
  * balloc.c contains the blocks allocation and deallocation routines
  */
@@ -48,7 +48,6 @@ void ext4_get_group_no_and_offset(struct super_block *sb, ext4_fsblk_t blocknr,
 unsigned ext4_init_block_bitmap(struct super_block *sb, struct buffer_head *bh,
 		 ext4_group_t block_group, struct ext4_group_desc *gdp)
 {
-	unsigned long start;
 	int bit, bit_max;
 	unsigned free_blocks, group_blocks;
 	struct ext4_sb_info *sbi = EXT4_SB(sb);
@@ -59,7 +58,7 @@ unsigned ext4_init_block_bitmap(struct super_block *sb, struct buffer_head *bh,
 		/* If checksum is bad mark all blocks used to prevent allocation
 		 * essentially implementing a per-group read-only flag. */
 		if (!ext4_group_desc_csum_verify(sbi, block_group, gdp)) {
-			ext4_error(sb, __FUNCTION__,
+			ext4_error(sb, __func__,
 				  "Checksum bad for group %lu\n", block_group);
 			gdp->bg_free_blocks_count = 0;
 			gdp->bg_free_inodes_count = 0;
@@ -106,11 +105,12 @@ unsigned ext4_init_block_bitmap(struct super_block *sb, struct buffer_head *bh,
 	free_blocks = group_blocks - bit_max;
 
 	if (bh) {
+		ext4_fsblk_t start;
+
 		for (bit = 0; bit < bit_max; bit++)
 			ext4_set_bit(bit, bh->b_data);
 
-		start = block_group * EXT4_BLOCKS_PER_GROUP(sb) +
-			le32_to_cpu(sbi->s_es->s_first_data_block);
+		start = ext4_group_first_block_no(sb, block_group);
 
 		/* Set bits for block and inode bitmaps, and inode table */
 		ext4_set_bit(ext4_block_bitmap(sb, gdp) - start, bh->b_data);
@@ -235,7 +235,7 @@ static int ext4_valid_block_bitmap(struct super_block *sb,
 		return 1;
 
 err_out:
-	ext4_error(sb, __FUNCTION__,
+	ext4_error(sb, __func__,
 			"Invalid block bitmap - "
 			"block_group = %d, block = %llu",
 			block_group, bitmap_blk);
@@ -264,7 +264,7 @@ read_block_bitmap(struct super_block *sb, ext4_group_t block_group)
 	bitmap_blk = ext4_block_bitmap(sb, desc);
 	bh = sb_getblk(sb, bitmap_blk);
 	if (unlikely(!bh)) {
-		ext4_error(sb, __FUNCTION__,
+		ext4_error(sb, __func__,
 			    "Cannot read block bitmap - "
 			    "block_group = %d, block_bitmap = %llu",
 			    (int)block_group, (unsigned long long)bitmap_blk);
@@ -281,7 +281,7 @@ read_block_bitmap(struct super_block *sb, ext4_group_t block_group)
 	}
 	if (bh_submit_read(bh) < 0) {
 		put_bh(bh);
-		ext4_error(sb, __FUNCTION__,
+		ext4_error(sb, __func__,
 			    "Cannot read block bitmap - "
 			    "block_group = %d, block_bitmap = %llu",
 			    (int)block_group, (unsigned long long)bitmap_blk);
@@ -360,7 +360,7 @@ static void __rsv_window_dump(struct rb_root *root, int verbose,
 		BUG();
 }
 #define rsv_window_dump(root, verbose) \
-	__rsv_window_dump((root), (verbose), __FUNCTION__)
+	__rsv_window_dump((root), (verbose), __func__)
 #else
 #define rsv_window_dump(root, verbose) do {} while (0)
 #endif
@@ -740,7 +740,7 @@ void ext4_free_blocks_sb(handle_t *handle, struct super_block *sb,
 		if (!ext4_clear_bit_atomic(sb_bgl_lock(sbi, block_group),
 						bit + i, bitmap_bh->b_data)) {
 			jbd_unlock_bh_state(bitmap_bh);
-			ext4_error(sb, __FUNCTION__,
+			ext4_error(sb, __func__,
 				   "bit already cleared for block %llu",
 				   (ext4_fsblk_t)(block + i));
 			jbd_lock_bh_state(bitmap_bh);
@@ -752,9 +752,7 @@ void ext4_free_blocks_sb(handle_t *handle, struct super_block *sb,
 	jbd_unlock_bh_state(bitmap_bh);
 
 	spin_lock(sb_bgl_lock(sbi, block_group));
-	desc->bg_free_blocks_count =
-		cpu_to_le16(le16_to_cpu(desc->bg_free_blocks_count) +
-			group_freed);
+	le16_add_cpu(&desc->bg_free_blocks_count, group_freed);
 	desc->bg_checksum = ext4_group_desc_csum(sbi, block_group, desc);
 	spin_unlock(sb_bgl_lock(sbi, block_group));
 	percpu_counter_add(&sbi->s_freeblocks_counter, count);
@@ -1798,7 +1796,7 @@ ext4_fsblk_t ext4_new_blocks_old(handle_t *handle, struct inode *inode,
 			if (ext4_test_bit(grp_alloc_blk+i,
 					bh2jh(bitmap_bh)->b_committed_data)) {
 				printk("%s: block was unexpectedly set in "
-					"b_committed_data\n", __FUNCTION__);
+					"b_committed_data\n", __func__);
 			}
 		}
 	}
@@ -1823,8 +1821,7 @@ ext4_fsblk_t ext4_new_blocks_old(handle_t *handle, struct inode *inode,
 	spin_lock(sb_bgl_lock(sbi, group_no));
 	if (gdp->bg_flags & cpu_to_le16(EXT4_BG_BLOCK_UNINIT))
 		gdp->bg_flags &= cpu_to_le16(~EXT4_BG_BLOCK_UNINIT);
-	gdp->bg_free_blocks_count =
-			cpu_to_le16(le16_to_cpu(gdp->bg_free_blocks_count)-num);
+	le16_add_cpu(&gdp->bg_free_blocks_count, -num);
 	gdp->bg_checksum = ext4_group_desc_csum(sbi, group_no, gdp);
 	spin_unlock(sb_bgl_lock(sbi, group_no));
 	percpu_counter_sub(&sbi->s_freeblocks_counter, num);

fs/ext4/bitmap.c

@@ -9,7 +9,7 @@
 
 #include <linux/buffer_head.h>
 #include <linux/jbd2.h>
-#include <linux/ext4_fs.h>
+#include "ext4.h"
 
 #ifdef EXT4FS_DEBUG
 

fs/ext4/dir.c

@@ -23,10 +23,10 @@
 
 #include <linux/fs.h>
 #include <linux/jbd2.h>
-#include <linux/ext4_fs.h>
 #include <linux/buffer_head.h>
 #include <linux/slab.h>
 #include <linux/rbtree.h>
+#include "ext4.h"
 
 static unsigned char ext4_filetype_table[] = {
 	DT_UNKNOWN, DT_REG, DT_DIR, DT_CHR, DT_BLK, DT_FIFO, DT_SOCK, DT_LNK
@@ -42,7 +42,7 @@ const struct file_operations ext4_dir_operations = {
 	.llseek		= generic_file_llseek,
 	.read		= generic_read_dir,
 	.readdir	= ext4_readdir,		/* we take BKL. needed?*/
-	.ioctl		= ext4_ioctl,		/* BKL held */
+	.unlocked_ioctl = ext4_ioctl,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl	= ext4_compat_ioctl,
 #endif

include/linux/ext4_fs.h → fs/ext4/ext4.h

@@ -1,5 +1,5 @@
 /*
- *  linux/include/linux/ext4_fs.h
+ *  ext4.h
  *
  * Copyright (C) 1992, 1993, 1994, 1995
  * Remy Card (card@masi.ibp.fr)
@@ -13,14 +13,13 @@
  *  Copyright (C) 1991, 1992  Linus Torvalds
  */
 
-#ifndef _LINUX_EXT4_FS_H
-#define _LINUX_EXT4_FS_H
+#ifndef _EXT4_H
+#define _EXT4_H
 
 #include <linux/types.h>
 #include <linux/blkdev.h>
 #include <linux/magic.h>
-
-#include <linux/ext4_fs_i.h>
+#include "ext4_i.h"
 
 /*
  * The second extended filesystem constants/structures
@@ -176,8 +175,7 @@ struct ext4_group_desc
 #define EXT4_BG_INODE_ZEROED	0x0004 /* On-disk itable initialized to zero */
 
 #ifdef __KERNEL__
-#include <linux/ext4_fs_i.h>
-#include <linux/ext4_fs_sb.h>
+#include "ext4_sb.h"
 #endif
 /*
  * Macro-instructions used to manage group descriptors
@@ -231,6 +229,7 @@ struct ext4_group_desc
 #define EXT4_TOPDIR_FL			0x00020000 /* Top of directory hierarchies*/
 #define EXT4_HUGE_FILE_FL               0x00040000 /* Set to each huge file */
 #define EXT4_EXTENTS_FL			0x00080000 /* Inode uses extents */
+#define EXT4_EXT_MIGRATE		0x00100000 /* Inode is migrating */
 #define EXT4_RESERVED_FL		0x80000000 /* reserved for ext4 lib */
 
 #define EXT4_FL_USER_VISIBLE		0x000BDFFF /* User visible flags */
@@ -1049,8 +1048,7 @@ extern int ext4_block_truncate_page(handle_t *handle, struct page *page,
 		struct address_space *mapping, loff_t from);
 
 /* ioctl.c */
-extern int ext4_ioctl (struct inode *, struct file *, unsigned int,
-		       unsigned long);
+extern long ext4_ioctl(struct file *, unsigned int, unsigned long);
 extern long ext4_compat_ioctl (struct file *, unsigned int, unsigned long);
 
 /* migrate.c */
@@ -1204,4 +1202,4 @@ extern int ext4_get_blocks_wrap(handle_t *handle, struct inode *inode,
 			int extend_disksize);
 #endif	/* __KERNEL__ */
 
-#endif	/* _LINUX_EXT4_FS_H */
+#endif	/* _EXT4_H */

include/linux/ext4_fs_extents.h → fs/ext4/ext4_extents.h

@@ -16,10 +16,10 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-
  */
 
-#ifndef _LINUX_EXT4_EXTENTS
-#define _LINUX_EXT4_EXTENTS
+#ifndef _EXT4_EXTENTS
+#define _EXT4_EXTENTS
 
-#include <linux/ext4_fs.h>
+#include "ext4.h"
 
 /*
  * With AGGRESSIVE_TEST defined, the capacity of index/leaf blocks
@@ -228,5 +228,5 @@ extern int ext4_ext_search_left(struct inode *, struct ext4_ext_path *,
 extern int ext4_ext_search_right(struct inode *, struct ext4_ext_path *,
 						ext4_lblk_t *, ext4_fsblk_t *);
 extern void ext4_ext_drop_refs(struct ext4_ext_path *);
-#endif /* _LINUX_EXT4_EXTENTS */
+#endif /* _EXT4_EXTENTS */
 

include/linux/ext4_fs_i.h → fs/ext4/ext4_i.h

@@ -1,5 +1,5 @@
 /*
- *  linux/include/linux/ext4_fs_i.h
+ *  ext4_i.h
  *
  * Copyright (C) 1992, 1993, 1994, 1995
  * Remy Card (card@masi.ibp.fr)
@@ -13,8 +13,8 @@
  *  Copyright (C) 1991, 1992  Linus Torvalds
  */
 
-#ifndef _LINUX_EXT4_FS_I
-#define _LINUX_EXT4_FS_I
+#ifndef _EXT4_I
+#define _EXT4_I
 
 #include <linux/rwsem.h>
 #include <linux/rbtree.h>
@@ -164,4 +164,4 @@ struct ext4_inode_info {
 	spinlock_t i_prealloc_lock;
 };
 
-#endif	/* _LINUX_EXT4_FS_I */
+#endif	/* _EXT4_I */