Ext4 patches planned for submission upstream

index a003d50..a263d82 100644
@@ -375,7 +375,7 @@ void journal_commit_transaction(journal_t *journal)
 			struct buffer_head *bh = jh2bh(jh);
 
 			jbd_lock_bh_state(bh);
-			jbd_slab_free(jh->b_committed_data, bh->b_size);
+			jbd_free(jh->b_committed_data, bh->b_size);
 			jh->b_committed_data = NULL;
 			jbd_unlock_bh_state(bh);
 		}

@@ -792,14 +792,14 @@ restart_loop:
 		 * Otherwise, we can just throw away the frozen data now.
 		 */
 		if (jh->b_committed_data) {
-			jbd_slab_free(jh->b_committed_data, bh->b_size);
+			jbd_free(jh->b_committed_data, bh->b_size);
 			jh->b_committed_data = NULL;
 			if (jh->b_frozen_data) {
 				jh->b_committed_data = jh->b_frozen_data;
 				jh->b_frozen_data = NULL;
 			}
 		} else if (jh->b_frozen_data) {
-			jbd_slab_free(jh->b_frozen_data, bh->b_size);
+			jbd_free(jh->b_frozen_data, bh->b_size);
 			jh->b_frozen_data = NULL;
 		}
 

148 lines not on this page · raw message

index 772b653..11d846c 100644
@@ -96,8 +96,8 @@ static int start_this_handle(journal_t *journal, handle_t *handle)
 
 alloc_transaction:
 	if (!journal->j_running_transaction) {
-		new_transaction = jbd_kmalloc(sizeof(*new_transaction),
-						GFP_NOFS);
+		new_transaction = kmalloc(sizeof(*new_transaction),
+						GFP_NOFS|__GFP_NOFAIL);
 		if (!new_transaction) {
 			ret = -ENOMEM;
 			goto out;

@@ -668,7 +668,7 @@ repeat:
 				JBUFFER_TRACE(jh, "allocate memory for buffer");
 				jbd_unlock_bh_state(bh);
 				frozen_buffer =
-					jbd_slab_alloc(jh2bh(jh)->b_size,
+					jbd_alloc(jh2bh(jh)->b_size,
 							 GFP_NOFS);
 				if (!frozen_buffer) {
 					printk(KERN_EMERG

@@ -728,7 +728,7 @@ done:
 
 out:
 	if (unlikely(frozen_buffer))	/* It's usually NULL */
-		jbd_slab_free(frozen_buffer, bh->b_size);
+		jbd_free(frozen_buffer, bh->b_size);
 
 	JBUFFER_TRACE(jh, "exit");
 	return error;

@@ -881,7 +881,7 @@ int journal_get_undo_access(handle_t *handle, struct buffer_head *bh)
 
 repeat:
 	if (!jh->b_committed_data) {
-		committed_data = jbd_slab_alloc(jh2bh(jh)->b_size, GFP_NOFS);
+		committed_data = jbd_alloc(jh2bh(jh)->b_size, GFP_NOFS);
 		if (!committed_data) {
 			printk(KERN_EMERG "%s: No memory for committed data\n",
 				__FUNCTION__);

@@ -908,7 +908,7 @@ repeat:
 out:
 	journal_put_journal_head(jh);
 	if (unlikely(committed_data))
-		jbd_slab_free(committed_data, bh->b_size);
+		jbd_free(committed_data, bh->b_size);
 	return err;
 }
 

index c0f59d1..2cac34a 100644
@@ -384,7 +384,7 @@ void jbd2_journal_commit_transaction(journal_t *journal)
 			struct buffer_head *bh = jh2bh(jh);
 
 			jbd_lock_bh_state(bh);
-			jbd2_slab_free(jh->b_committed_data, bh->b_size);
+			jbd2_free(jh->b_committed_data, bh->b_size);
 			jh->b_committed_data = NULL;
 			jbd_unlock_bh_state(bh);
 		}

@@ -801,14 +801,14 @@ restart_loop:
 		 * Otherwise, we can just throw away the frozen data now.
 		 */
 		if (jh->b_committed_data) {
-			jbd2_slab_free(jh->b_committed_data, bh->b_size);
+			jbd2_free(jh->b_committed_data, bh->b_size);
 			jh->b_committed_data = NULL;
 			if (jh->b_frozen_data) {
 				jh->b_committed_data = jh->b_frozen_data;
 				jh->b_frozen_data = NULL;
 			}
 		} else if (jh->b_frozen_data) {
-			jbd2_slab_free(jh->b_frozen_data, bh->b_size);
+			jbd2_free(jh->b_frozen_data, bh->b_size);
 			jh->b_frozen_data = NULL;
 		}
 

148 lines not on this page · raw message

index 7946ff4..a5fb70f 100644
@@ -96,8 +96,8 @@ static int start_this_handle(journal_t *journal, handle_t *handle)
 
 alloc_transaction:
 	if (!journal->j_running_transaction) {
-		new_transaction = jbd_kmalloc(sizeof(*new_transaction),
-						GFP_NOFS);
+		new_transaction = kmalloc(sizeof(*new_transaction),
+						GFP_NOFS|__GFP_NOFAIL);
 		if (!new_transaction) {
 			ret = -ENOMEM;
 			goto out;

@@ -236,7 +236,7 @@ out:
 /* Allocate a new handle.  This should probably be in a slab... */
 static handle_t *new_handle(int nblocks)
 {
-	handle_t *handle = jbd_alloc_handle(GFP_NOFS);
+	handle_t *handle = jbd2_alloc_handle(GFP_NOFS);
 	if (!handle)
 		return NULL;
 	memset(handle, 0, sizeof(*handle));

@@ -282,7 +282,7 @@ handle_t *jbd2_journal_start(journal_t *journal, int nblocks)
 
 	err = start_this_handle(journal, handle);
 	if (err < 0) {
-		jbd_free_handle(handle);
+		jbd2_free_handle(handle);
 		current->journal_info = NULL;
 		handle = ERR_PTR(err);
 	}

@@ -668,7 +668,7 @@ repeat:
 				JBUFFER_TRACE(jh, "allocate memory for buffer");
 				jbd_unlock_bh_state(bh);
 				frozen_buffer =
-					jbd2_slab_alloc(jh2bh(jh)->b_size,
+					jbd2_alloc(jh2bh(jh)->b_size,
 							 GFP_NOFS);
 				if (!frozen_buffer) {
 					printk(KERN_EMERG

@@ -728,7 +728,7 @@ done:
 
 out:
 	if (unlikely(frozen_buffer))	/* It's usually NULL */
-		jbd2_slab_free(frozen_buffer, bh->b_size);
+		jbd2_free(frozen_buffer, bh->b_size);
 
 	JBUFFER_TRACE(jh, "exit");
 	return error;

@@ -881,7 +881,7 @@ int jbd2_journal_get_undo_access(handle_t *handle, struct buffer_head *bh)
 
 repeat:
 	if (!jh->b_committed_data) {
-		committed_data = jbd2_slab_alloc(jh2bh(jh)->b_size, GFP_NOFS);
+		committed_data = jbd2_alloc(jh2bh(jh)->b_size, GFP_NOFS);
 		if (!committed_data) {
 			printk(KERN_EMERG "%s: No memory for committed data\n",
 				__FUNCTION__);

@@ -908,7 +908,7 @@ repeat:
 out:
 	jbd2_journal_put_journal_head(jh);
 	if (unlikely(committed_data))
-		jbd2_slab_free(committed_data, bh->b_size);
+		jbd2_free(committed_data, bh->b_size);
 	return err;
 }
 

@@ -1411,7 +1411,7 @@ int jbd2_journal_stop(handle_t *handle)
 		spin_unlock(&journal->j_state_lock);
 	}
 
-	jbd_free_handle(handle);
+	jbd2_free_handle(handle);
 	return err;
 }
 

index 4527375..26216c1 100644
@@ -71,14 +71,16 @@ extern int journal_enable_debug;
 #define jbd_debug(f, a...)	/**/
 #endif
 
-extern void * __jbd_kmalloc (const char *where, size_t size, gfp_t flags, int retry);
-extern void * jbd_slab_alloc(size_t size, gfp_t flags);
-extern void jbd_slab_free(void *ptr, size_t size);
-
-#define jbd_kmalloc(size, flags) \
-	__jbd_kmalloc(__FUNCTION__, (size), (flags), journal_oom_retry)
-#define jbd_rep_kmalloc(size, flags) \
-	__jbd_kmalloc(__FUNCTION__, (size), (flags), 1)
+
+static inline void *jbd_alloc(size_t size, gfp_t flags)
+{
+	return (void *)__get_free_pages(flags, get_order(size));
+}
+
+static inline void jbd_free(void *ptr, size_t size)
+{
+	free_pages((unsigned long)ptr, get_order(size));
+};
 
 #define JFS_MIN_JOURNAL_BLOCKS 1024
 

index 260d6d7..5f8b876 100644
@@ -71,14 +71,15 @@ extern u8 jbd2_journal_enable_debug;
 #define jbd_debug(f, a...)	/**/
 #endif
 
-extern void * __jbd2_kmalloc (const char *where, size_t size, gfp_t flags, int retry);
-extern void * jbd2_slab_alloc(size_t size, gfp_t flags);
-extern void jbd2_slab_free(void *ptr, size_t size);
+static inline void *jbd2_alloc(size_t size, gfp_t flags)
+{
+	return (void *)__get_free_pages(flags, get_order(size));
+}
 
-#define jbd_kmalloc(size, flags) \
-	__jbd2_kmalloc(__FUNCTION__, (size), (flags), journal_oom_retry)
-#define jbd_rep_kmalloc(size, flags) \
-	__jbd2_kmalloc(__FUNCTION__, (size), (flags), 1)
+static inline void jbd2_free(void *ptr, size_t size)
+{
+	free_pages((unsigned long)ptr, get_order(size));
+};
 
 #define JBD2_MIN_JOURNAL_BLOCKS 1024
 

@@ -959,12 +960,12 @@ void jbd2_journal_put_journal_head(struct journal_head *jh);
  */
 extern struct kmem_cache *jbd2_handle_cache;
 
-static inline handle_t *jbd_alloc_handle(gfp_t gfp_flags)
+static inline handle_t *jbd2_alloc_handle(gfp_t gfp_flags)
 {
 	return kmem_cache_alloc(jbd2_handle_cache, gfp_flags);
 }
 
-static inline void jbd_free_handle(handle_t *handle)
+static inline void jbd2_free_handle(handle_t *handle)
 {
 	kmem_cache_free(jbd2_handle_cache, handle);
 }

index ae2c25d..8d6d475 100644
@@ -653,7 +653,7 @@ static journal_t * journal_init_common (void)
 	journal_t *journal;
 	int err;
 
-	journal = kmalloc(sizeof(*journal), GFP_KERNEL|__GFP_NOFAIL);
+	journal = kmalloc(sizeof(*journal), GFP_KERNEL);
 	if (!journal)
 		goto fail;
 	memset(journal, 0, sizeof(*journal));

index 4281244..0e329a3 100644
@@ -654,7 +654,7 @@ static journal_t * journal_init_common (void)
 	journal_t *journal;
 	int err;
 
-	journal = kmalloc(sizeof(*journal), GFP_KERNEL|__GFP_NOFAIL);
+	journal = kmalloc(sizeof(*journal), GFP_KERNEL);
 	if (!journal)
 		goto fail;
 	memset(journal, 0, sizeof(*journal));

index b10d68f..12c7d65 100644
@@ -750,12 +750,11 @@ ext4_xattr_block_set(handle_t *handle, struct inode *inode,
 		}
 	} else {
 		/* Allocate a buffer where we construct the new block. */
-		s->base = kmalloc(sb->s_blocksize, GFP_KERNEL);
+		s->base = kzalloc(sb->s_blocksize, GFP_KERNEL);
 		/* assert(header == s->base) */
 		error = -ENOMEM;
 		if (s->base == NULL)
 			goto cleanup;
-		memset(s->base, 0, sb->s_blocksize);
 		header(s->base)->h_magic = cpu_to_le32(EXT4_XATTR_MAGIC);
 		header(s->base)->h_blocks = cpu_to_le32(1);
 		header(s->base)->h_refcount = cpu_to_le32(1);

index 0e329a3..f12c65b 100644
@@ -654,10 +654,9 @@ static journal_t * journal_init_common (void)
 	journal_t *journal;
 	int err;
 
-	journal = kmalloc(sizeof(*journal), GFP_KERNEL);
+	journal = kzalloc(sizeof(*journal), GFP_KERNEL|__GFP_NOFAIL);
 	if (!journal)
 		goto fail;
-	memset(journal, 0, sizeof(*journal));
 
 	init_waitqueue_head(&journal->j_wait_transaction_locked);
 	init_waitqueue_head(&journal->j_wait_logspace);

index a5fb70f..b1fcf2b 100644
@@ -96,13 +96,12 @@ static int start_this_handle(journal_t *journal, handle_t *handle)
 
 alloc_transaction:
 	if (!journal->j_running_transaction) {
-		new_transaction = kmalloc(sizeof(*new_transaction),
+		new_transaction = kzalloc(sizeof(*new_transaction),
 						GFP_NOFS|__GFP_NOFAIL);
 		if (!new_transaction) {
 			ret = -ENOMEM;
 			goto out;
 		}
-		memset(new_transaction, 0, sizeof(*new_transaction));
 	}
 
 	jbd_debug(3, "New handle %p going live.\n", handle);

index b898ee4..6986f33 100644
@@ -475,7 +475,7 @@ void jbd2_journal_commit_transaction(journal_t *journal)
 	spin_unlock(&journal->j_list_lock);
 
 	if (err)
-		__jbd2_journal_abort_hard(journal);
+		jbd2_journal_abort(journal, err);
 
 	jbd2_journal_write_revoke_records(journal, commit_transaction);
 

@@ -533,7 +533,7 @@ void jbd2_journal_commit_transaction(journal_t *journal)
 
 			descriptor = jbd2_journal_get_descriptor_buffer(journal);
 			if (!descriptor) {
-				__jbd2_journal_abort_hard(journal);
+				jbd2_journal_abort(journal, -EIO);
 				continue;
 			}
 

@@ -566,7 +566,7 @@ void jbd2_journal_commit_transaction(journal_t *journal)
 		   and repeat this loop: we'll fall into the
 		   refile-on-abort condition above. */
 		if (err) {
-			__jbd2_journal_abort_hard(journal);
+			jbd2_journal_abort(journal, err);
 			continue;
 		}
 

@@ -757,7 +757,7 @@ wait_for_iobuf:
 		err = -EIO;
 
 	if (err)
-		__jbd2_journal_abort_hard(journal);
+		jbd2_journal_abort(journal, err);
 
 	/* End of a transaction!  Finally, we can do checkpoint
            processing: any buffers committed as a result of this

index ff07bff..6ddc553 100644
@@ -1864,16 +1864,14 @@ void jbd2_journal_put_journal_head(struct journal_head *jh)
 /*
  * debugfs tunables
  */
-#if defined(CONFIG_JBD2_DEBUG)
-u8 jbd2_journal_enable_debug;
+#ifdef CONFIG_JBD2_DEBUG
+u8 jbd2_journal_enable_debug __read_mostly;
 EXPORT_SYMBOL(jbd2_journal_enable_debug);
-#endif
-
-#if defined(CONFIG_JBD2_DEBUG) && defined(CONFIG_DEBUG_FS)
 
 #define JBD2_DEBUG_NAME "jbd2-debug"
 
-struct dentry *jbd2_debugfs_dir, *jbd2_debug;
+static struct dentry *jbd2_debugfs_dir;
+static struct dentry *jbd2_debug;
 
 static void __init jbd2_create_debugfs_entry(void)
 {

@@ -1886,24 +1884,18 @@ static void __init jbd2_create_debugfs_entry(void)
 
 static void __exit jbd2_remove_debugfs_entry(void)
 {
-	if (jbd2_debug)
-		debugfs_remove(jbd2_debug);
-	if (jbd2_debugfs_dir)
-		debugfs_remove(jbd2_debugfs_dir);
+	debugfs_remove(jbd2_debug);
+	debugfs_remove(jbd2_debugfs_dir);
 }
 
 #else
 
 static void __init jbd2_create_debugfs_entry(void)
 {
-	do {
-	} while (0);
 }
 
 static void __exit jbd2_remove_debugfs_entry(void)
 {
-	do {
-	} while (0);
 }
 
 #endif

index 427f830..b8b538d 100644
@@ -576,11 +576,6 @@ got:
 	/* dirsync only applies to directories */
 	if (!S_ISDIR(mode))
 		ei->i_flags &= ~EXT4_DIRSYNC_FL;
-#ifdef EXT4_FRAGMENTS
-	ei->i_faddr = 0;
-	ei->i_frag_no = 0;
-	ei->i_frag_size = 0;
-#endif
 	ei->i_file_acl = 0;
 	ei->i_dir_acl = 0;
 	ei->i_dtime = 0;

index a4848e0..f283522 100644
@@ -2645,11 +2645,6 @@ void ext4_read_inode(struct inode * inode)
 	}
 	inode->i_blocks = le32_to_cpu(raw_inode->i_blocks);
 	ei->i_flags = le32_to_cpu(raw_inode->i_flags);
-#ifdef EXT4_FRAGMENTS
-	ei->i_faddr = le32_to_cpu(raw_inode->i_faddr);
-	ei->i_frag_no = raw_inode->i_frag;
-	ei->i_frag_size = raw_inode->i_fsize;
-#endif
 	ei->i_file_acl = le32_to_cpu(raw_inode->i_file_acl);
 	if (EXT4_SB(inode->i_sb)->s_es->s_creator_os !=
 	    cpu_to_le32(EXT4_OS_HURD))

@@ -2794,11 +2789,6 @@ static int ext4_do_update_inode(handle_t *handle,
 	raw_inode->i_blocks = cpu_to_le32(inode->i_blocks);
 	raw_inode->i_dtime = cpu_to_le32(ei->i_dtime);
 	raw_inode->i_flags = cpu_to_le32(ei->i_flags);
-#ifdef EXT4_FRAGMENTS
-	raw_inode->i_faddr = cpu_to_le32(ei->i_faddr);
-	raw_inode->i_frag = ei->i_frag_no;
-	raw_inode->i_fsize = ei->i_frag_size;
-#endif
 	if (EXT4_SB(inode->i_sb)->s_es->s_creator_os !=
 	    cpu_to_le32(EXT4_OS_HURD))
 		raw_inode->i_file_acl_high =

index 42cbdb5..420d39d 100644
@@ -1655,14 +1655,6 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent)
 		if (sbi->s_inode_size > EXT4_GOOD_OLD_INODE_SIZE)
 			sb->s_time_gran = 1 << (EXT4_EPOCH_BITS - 2);
 	}
-	sbi->s_frag_size = EXT4_MIN_FRAG_SIZE <<
-				   le32_to_cpu(es->s_log_frag_size);
-	if (blocksize != sbi->s_frag_size) {
-		printk(KERN_ERR
-		       "EXT4-fs: fragsize %lu != blocksize %u (unsupported)\n",
-		       sbi->s_frag_size, blocksize);
-		goto failed_mount;
-	}
 	sbi->s_desc_size = le16_to_cpu(es->s_desc_size);
 	if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_64BIT)) {
 		if (sbi->s_desc_size < EXT4_MIN_DESC_SIZE_64BIT ||

@@ -1676,7 +1668,6 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent)
 	} else
 		sbi->s_desc_size = EXT4_MIN_DESC_SIZE;
 	sbi->s_blocks_per_group = le32_to_cpu(es->s_blocks_per_group);
-	sbi->s_frags_per_group = le32_to_cpu(es->s_frags_per_group);
 	sbi->s_inodes_per_group = le32_to_cpu(es->s_inodes_per_group);
 	if (EXT4_INODE_SIZE(sb) == 0)
 		goto cantfind_ext4;

@@ -1700,12 +1691,6 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent)
 			sbi->s_blocks_per_group);
 		goto failed_mount;
 	}
-	if (sbi->s_frags_per_group > blocksize * 8) {
-		printk (KERN_ERR
-			"EXT4-fs: #fragments per group too big: %lu\n",
-			sbi->s_frags_per_group);
-		goto failed_mount;
-	}
 	if (sbi->s_inodes_per_group > blocksize * 8) {
 		printk (KERN_ERR
 			"EXT4-fs: #inodes per group too big: %lu\n",

index cdee7aa..3baeb99 100644
@@ -105,20 +105,6 @@
 #define EXT4_BLOCK_ALIGN(size, blkbits)		ALIGN((size), (1 << (blkbits)))
 
 /*
- * Macro-instructions used to manage fragments
- */
-#define EXT4_MIN_FRAG_SIZE		1024
-#define	EXT4_MAX_FRAG_SIZE		4096
-#define EXT4_MIN_FRAG_LOG_SIZE		  10
-#ifdef __KERNEL__
-# define EXT4_FRAG_SIZE(s)		(EXT4_SB(s)->s_frag_size)
-# define EXT4_FRAGS_PER_BLOCK(s)	(EXT4_SB(s)->s_frags_per_block)
-#else
-# define EXT4_FRAG_SIZE(s)		(EXT4_MIN_FRAG_SIZE << (s)->s_log_frag_size)
-# define EXT4_FRAGS_PER_BLOCK(s)	(EXT4_BLOCK_SIZE(s) / EXT4_FRAG_SIZE(s))
-#endif
-
-/*
  * Structure of a blocks group descriptor
  */
 struct ext4_group_desc

@@ -311,27 +297,24 @@ struct ext4_inode {
 	__le32	i_generation;	/* File version (for NFS) */
 	__le32	i_file_acl;	/* File ACL */
 	__le32	i_dir_acl;	/* Directory ACL */
-	__le32	i_faddr;	/* Fragment address */
+	__le32	i_obso_faddr;	/* Obsoleted fragment address */
 	union {
 		struct {
-			__u8	l_i_frag;	/* Fragment number */
-			__u8	l_i_fsize;	/* Fragment size */
+			__le16	l_i_reserved1;	/* Obsoleted fragment number/size which are removed in ext4 */
 			__le16	l_i_file_acl_high;
 			__le16	l_i_uid_high;	/* these 2 fields */
 			__le16	l_i_gid_high;	/* were reserved2[0] */
 			__u32	l_i_reserved2;
 		} linux2;
 		struct {
-			__u8	h_i_frag;	/* Fragment number */
-			__u8	h_i_fsize;	/* Fragment size */
+			__le16	h_i_reserved1;	/* Obsoleted fragment number/size which are removed in ext4 */
 			__u16	h_i_mode_high;
 			__u16	h_i_uid_high;
 			__u16	h_i_gid_high;
 			__u32	h_i_author;
 		} hurd2;
 		struct {
-			__u8	m_i_frag;	/* Fragment number */
-			__u8	m_i_fsize;	/* Fragment size */
+			__le16	h_i_reserved1;	/* Obsoleted fragment number/size which are removed in ext4 */
 			__le16	m_i_file_acl_high;
 			__u32	m_i_reserved2[2];
 		} masix2;

@@ -419,8 +402,6 @@ do {									       \
 
 #if defined(__KERNEL__) || defined(__linux__)
 #define i_reserved1	osd1.linux1.l_i_reserved1
-#define i_frag		osd2.linux2.l_i_frag
-#define i_fsize		osd2.linux2.l_i_fsize
 #define i_file_acl_high	osd2.linux2.l_i_file_acl_high
 #define i_uid_low	i_uid
 #define i_gid_low	i_gid

@@ -431,8 +412,6 @@ do {									       \
 #elif defined(__GNU__)
 
 #define i_translator	osd1.hurd1.h_i_translator
-#define i_frag		osd2.hurd2.h_i_frag;
-#define i_fsize		osd2.hurd2.h_i_fsize;
 #define i_uid_high	osd2.hurd2.h_i_uid_high
 #define i_gid_high	osd2.hurd2.h_i_gid_high
 #define i_author	osd2.hurd2.h_i_author

@@ -440,8 +419,6 @@ do {									       \
 #elif defined(__masix__)
 
 #define i_reserved1	osd1.masix1.m_i_reserved1
-#define i_frag		osd2.masix2.m_i_frag
-#define i_fsize		osd2.masix2.m_i_fsize
 #define i_file_acl_high	osd2.masix2.m_i_file_acl_high
 #define i_reserved2	osd2.masix2.m_i_reserved2
 

@@ -528,9 +505,9 @@ struct ext4_super_block {
 /*10*/	__le32	s_free_inodes_count;	/* Free inodes count */
 	__le32	s_first_data_block;	/* First Data Block */
 	__le32	s_log_block_size;	/* Block size */
-	__le32	s_log_frag_size;	/* Fragment size */
+	__le32	s_obso_log_frag_size;	/* Obsoleted fragment size */
 /*20*/	__le32	s_blocks_per_group;	/* # Blocks per group */
-	__le32	s_frags_per_group;	/* # Fragments per group */
+	__le32	s_obso_frags_per_group;	/* Obsoleted fragments per group */
 	__le32	s_inodes_per_group;	/* # Inodes per group */
 	__le32	s_mtime;		/* Mount time */
 /*30*/	__le32	s_wtime;		/* Write time */

index 1a511e9..86ddfe2 100644
@@ -78,11 +78,6 @@ struct ext4_ext_cache {
 struct ext4_inode_info {
 	__le32	i_data[15];	/* unconverted */
 	__u32	i_flags;
-#ifdef EXT4_FRAGMENTS
-	__u32	i_faddr;
-	__u8	i_frag_no;
-	__u8	i_frag_size;
-#endif
 	ext4_fsblk_t	i_file_acl;
 	__u32	i_dir_acl;
 	__u32	i_dtime;

index 1b2ffee..a978fba 100644
@@ -28,11 +28,8 @@
  * third extended-fs super-block data in memory
  */
 struct ext4_sb_info {
-	unsigned long s_frag_size;	/* Size of a fragment in bytes */
 	unsigned long s_desc_size;	/* Size of a group descriptor in bytes */
-	unsigned long s_frags_per_block;/* Number of fragments per block */
 	unsigned long s_inodes_per_block;/* Number of inodes per block */
-	unsigned long s_frags_per_group;/* Number of fragments in a group */
 	unsigned long s_blocks_per_group;/* Number of blocks in a group */
 	unsigned long s_inodes_per_group;/* Number of inodes in a group */
 	unsigned long s_itb_per_group;	/* Number of inode table blocks per group */

index 3ab01c0..2ba49ff 100644
@@ -47,9 +47,7 @@ const struct file_operations ext4_dir_operations = {
 	.compat_ioctl	= ext4_compat_ioctl,
 #endif
 	.fsync		= ext4_sync_file,	/* BKL held */
-#ifdef CONFIG_EXT4_INDEX
 	.release	= ext4_release_dir,
-#endif
 };
 
 

@@ -107,7 +105,6 @@ static int ext4_readdir(struct file * filp,
 
 	sb = inode->i_sb;
 
-#ifdef CONFIG_EXT4_INDEX
 	if (EXT4_HAS_COMPAT_FEATURE(inode->i_sb,
 				    EXT4_FEATURE_COMPAT_DIR_INDEX) &&
 	    ((EXT4_I(inode)->i_flags & EXT4_INDEX_FL) ||

@@ -123,7 +120,6 @@ static int ext4_readdir(struct file * filp,
 		 */
 		EXT4_I(filp->f_path.dentry->d_inode)->i_flags &= ~EXT4_INDEX_FL;
 	}
-#endif
 	stored = 0;
 	offset = filp->f_pos & (sb->s_blocksize - 1);
 

@@ -232,7 +228,6 @@ out:
 	return ret;
 }
 
-#ifdef CONFIG_EXT4_INDEX
 /*
  * These functions convert from the major/minor hash to an f_pos
  * value.

@@ -518,5 +513,3 @@ static int ext4_release_dir (struct inode * inode, struct file * filp)
 
 	return 0;
 }
-
-#endif

index 5fdb862..94ee6f3 100644
@@ -144,7 +144,6 @@ struct dx_map_entry
 	u16 size;
 };
 
-#ifdef CONFIG_EXT4_INDEX
 static inline unsigned dx_get_block (struct dx_entry *entry);
 static void dx_set_block (struct dx_entry *entry, unsigned value);
 static inline unsigned dx_get_hash (struct dx_entry *entry);

@@ -766,8 +765,6 @@ static void dx_insert_block(struct dx_frame *frame, u32 hash, u32 block)
 	dx_set_block(new, block);
 	dx_set_count(entries, count + 1);
 }
-#endif
-
 
 static void ext4_update_dx_flag(struct inode *inode)
 {

@@ -869,7 +866,6 @@ static struct buffer_head * ext4_find_entry (struct dentry *dentry,
 	name = dentry->d_name.name;
 	if (namelen > EXT4_NAME_LEN)
 		return NULL;
-#ifdef CONFIG_EXT4_INDEX
 	if (is_dx(dir)) {
 		bh = ext4_dx_find_entry(dentry, res_dir, &err);
 		/*

@@ -881,7 +877,6 @@ static struct buffer_head * ext4_find_entry (struct dentry *dentry,
 			return bh;
 		dxtrace(printk("ext4_find_entry: dx failed, falling back\n"));
 	}
-#endif
 	nblocks = dir->i_size >> EXT4_BLOCK_SIZE_BITS(sb);
 	start = EXT4_I(dir)->i_dir_start_lookup;
 	if (start >= nblocks)

@@ -957,7 +952,6 @@ cleanup_and_exit:
 	return ret;
 }
 
-#ifdef CONFIG_EXT4_INDEX
 static struct buffer_head * ext4_dx_find_entry(struct dentry *dentry,
 		       struct ext4_dir_entry_2 **res_dir, int *err)
 {

@@ -1025,7 +1019,6 @@ errout:
 	dx_release (frames);
 	return NULL;
 }
-#endif
 
 static struct dentry *ext4_lookup(struct inode * dir, struct dentry *dentry, struct nameidata *nd)
 {

@@ -1121,7 +1114,6 @@ static inline void ext4_set_de_type(struct super_block *sb,
 		de->file_type = ext4_type_by_mode[(mode & S_IFMT)>>S_SHIFT];
 }
 
-#ifdef CONFIG_EXT4_INDEX
 /*
  * Move count entries from end of map between two memory locations.
  * Returns pointer to last entry moved.

@@ -1266,8 +1258,6 @@ errout:
 	*error = err;
 	return NULL;
 }
-#endif
-
 
 /*
  * Add a new entry into a directory (leaf) block.  If de is non-NULL,

@@ -1364,7 +1354,6 @@ static int add_dirent_to_buf(handle_t *handle, struct dentry *dentry,
 	return 0;
 }
 
-#ifdef CONFIG_EXT4_INDEX
 /*
  * This converts a one block unindexed directory to a 3 block indexed
  * directory, and adds the dentry to the indexed directory.

@@ -1443,7 +1432,6 @@ static int make_indexed_dir(handle_t *handle, struct dentry *dentry,
 
 	return add_dirent_to_buf(handle, dentry, inode, de, bh);
 }
-#endif
 
 /*
  *	ext4_add_entry()

@@ -1464,9 +1452,7 @@ static int ext4_add_entry (handle_t *handle, struct dentry *dentry,
 	struct ext4_dir_entry_2 *de;
 	struct super_block * sb;
 	int	retval;
-#ifdef CONFIG_EXT4_INDEX
 	int	dx_fallback=0;
-#endif
 	unsigned blocksize;
 	u32 block, blocks;
 

@@ -1474,7 +1460,6 @@ static int ext4_add_entry (handle_t *handle, struct dentry *dentry,
 	blocksize = sb->s_blocksize;
 	if (!dentry->d_name.len)
 		return -EINVAL;
-#ifdef CONFIG_EXT4_INDEX
 	if (is_dx(dir)) {
 		retval = ext4_dx_add_entry(handle, dentry, inode);
 		if (!retval || (retval != ERR_BAD_DX_DIR))

@@ -1483,7 +1468,6 @@ static int ext4_add_entry (handle_t *handle, struct dentry *dentry,
 		dx_fallback++;
 		ext4_mark_inode_dirty(handle, dir);
 	}
-#endif
 	blocks = dir->i_size >> sb->s_blocksize_bits;
 	for (block = 0, offset = 0; block < blocks; block++) {
 		bh = ext4_bread(handle, dir, block, 0, &retval);

@@ -1493,11 +1477,9 @@ static int ext4_add_entry (handle_t *handle, struct dentry *dentry,
 		if (retval != -ENOSPC)
 			return retval;
 
-#ifdef CONFIG_EXT4_INDEX
 		if (blocks == 1 && !dx_fallback &&
 		    EXT4_HAS_COMPAT_FEATURE(sb, EXT4_FEATURE_COMPAT_DIR_INDEX))
 			return make_indexed_dir(handle, dentry, inode, bh);
-#endif
 		brelse(bh);
 	}
 	bh = ext4_append(handle, dir, &block, &retval);

@@ -1509,7 +1491,6 @@ static int ext4_add_entry (handle_t *handle, struct dentry *dentry,
 	return add_dirent_to_buf(handle, dentry, inode, de, bh);
 }
 
-#ifdef CONFIG_EXT4_INDEX
 /*
  * Returns 0 for success, or a negative error value
  */

@@ -1644,7 +1625,6 @@ cleanup:
 	dx_release(frames);
 	return err;
 }
-#endif
 
 /*
  * ext4_delete_entry deletes a directory entry by merging it with the

index 3baeb99..151738a 100644
@@ -36,10 +36,6 @@
 /*max window size: 1024(direct blocks) + 3([t,d]indirect blocks) */
 #define EXT4_MAX_RESERVE_BLOCKS		1027
 #define EXT4_RESERVE_WINDOW_NOT_ALLOCATED 0
-/*
- * Always enable hashed directories
- */
-#define CONFIG_EXT4_INDEX
 
 /*
  * Debug code

@@ -766,17 +762,11 @@ struct ext4_dir_entry_2 {
  * (c) Daniel Phillips, 2001
  */
 
-#ifdef CONFIG_EXT4_INDEX
-  #define is_dx(dir) (EXT4_HAS_COMPAT_FEATURE(dir->i_sb, \
-					      EXT4_FEATURE_COMPAT_DIR_INDEX) && \
+#define is_dx(dir) (EXT4_HAS_COMPAT_FEATURE(dir->i_sb, \
+				      EXT4_FEATURE_COMPAT_DIR_INDEX) && \
 		      (EXT4_I(dir)->i_flags & EXT4_INDEX_FL))
 #define EXT4_DIR_LINK_MAX(dir) (!is_dx(dir) && (dir)->i_nlink >= EXT4_LINK_MAX)
 #define EXT4_DIR_LINK_EMPTY(dir) ((dir)->i_nlink == 2 || (dir)->i_nlink == 1)
-#else
-  #define is_dx(dir) 0
-#define EXT4_DIR_LINK_MAX(dir) ((dir)->i_nlink >= EXT4_LINK_MAX)
-#define EXT4_DIR_LINK_EMPTY(dir) ((dir)->i_nlink == 2)
-#endif
 
 /* Legal values for the dx_root hash_version field: */
 

131 lines not on this page · raw message

new file mode 100644
index 0000000..9310979
@@ -0,0 +1,29 @@
+/*
+ *  linux/fs/ext4/group.h
+ *
+ * Copyright (C) 2007 Cluster File Systems, Inc
+ *
+ * Author: Andreas Dilger <[email protected]>
+ */
+
+#ifndef _LINUX_EXT4_GROUP_H
+#define _LINUX_EXT4_GROUP_H
+#if defined(CONFIG_CRC16)
+#include <linux/crc16.h>
+#endif
+
+extern __le16 ext4_group_desc_csum(struct ext4_sb_info *sbi, __u32 group,
+				   struct ext4_group_desc *gdp);
+extern int ext4_group_desc_csum_verify(struct ext4_sb_info *sbi, __u32 group,
+				       struct ext4_group_desc *gdp);
+struct buffer_head *read_block_bitmap(struct super_block *sb,
+				      unsigned int block_group);
+extern unsigned ext4_init_block_bitmap(struct super_block *sb,
+				       struct buffer_head *bh, int group,
+				       struct ext4_group_desc *desc);
+#define ext4_free_blocks_after_init(sb, group, desc)			\
+		ext4_init_block_bitmap(sb, NULL, group, desc)
+extern unsigned ext4_init_inode_bitmap(struct super_block *sb,
+				       struct buffer_head *bh, int group,
+				       struct ext4_group_desc *desc);
+#endif /* _LINUX_EXT4_GROUP_H */

201 lines not on this page · raw message

index aa11d7d..3359450 100644
@@ -16,6 +16,7 @@
 #include <linux/errno.h>
 #include <linux/slab.h>
 
+#include "group.h"
 
 #define outside(b, first, last)	((b) < (first) || (b) >= (last))
 #define inside(b, first, last)	((b) >= (first) && (b) < (last))

@@ -842,6 +843,7 @@ int ext4_group_add(struct super_block *sb, struct ext4_new_group_data *input)
 	ext4_inode_table_set(sb, gdp, input->inode_table); /* LV FIXME */
 	gdp->bg_free_blocks_count = cpu_to_le16(input->free_blocks_count);
 	gdp->bg_free_inodes_count = cpu_to_le16(EXT4_INODES_PER_GROUP(sb));
+	gdp->bg_checksum = ext4_group_desc_csum(sbi, input->group, gdp);
 
 	/*
 	 * Make the new blocks and inodes valid next.  We do this before

71 lines not on this page · raw message

index 151738a..b77b59f 100644
@@ -105,19 +105,25 @@
  */
 struct ext4_group_desc
 {
-	__le32	bg_block_bitmap;		/* Blocks bitmap block */
-	__le32	bg_inode_bitmap;		/* Inodes bitmap block */
+	__le32	bg_block_bitmap;	/* Blocks bitmap block */
+	__le32	bg_inode_bitmap;	/* Inodes bitmap block */
 	__le32	bg_inode_table;		/* Inodes table block */
 	__le16	bg_free_blocks_count;	/* Free blocks count */
 	__le16	bg_free_inodes_count;	/* Free inodes count */
 	__le16	bg_used_dirs_count;	/* Directories count */
-	__u16	bg_flags;
-	__u32	bg_reserved[3];
+	__le16	bg_flags;		/* EXT4_BG_flags (INODE_UNINIT, etc) */
+	__u32	bg_reserved[2];		/* Likely block/inode bitmap checksum */
+	__le16  bg_itable_unused;	/* Unused inodes count */
+	__le16  bg_checksum;		/* crc16(sb_uuid+group+desc) */
 	__le32	bg_block_bitmap_hi;	/* Blocks bitmap block MSB */
 	__le32	bg_inode_bitmap_hi;	/* Inodes bitmap block MSB */
 	__le32	bg_inode_table_hi;	/* Inodes table block MSB */
 };
 
+#define EXT4_BG_INODE_UNINIT	0x0001 /* Inode table/bitmap not in use */
+#define EXT4_BG_BLOCK_UNINIT	0x0002 /* Block bitmap not in use */
+#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>

@@ -665,6 +671,7 @@ static inline int ext4_valid_inum(struct super_block *sb, unsigned long ino)
 #define EXT4_FEATURE_RO_COMPAT_SPARSE_SUPER	0x0001
 #define EXT4_FEATURE_RO_COMPAT_LARGE_FILE	0x0002
 #define EXT4_FEATURE_RO_COMPAT_BTREE_DIR	0x0004
+#define EXT4_FEATURE_RO_COMPAT_GDT_CSUM		0x0010
 #define EXT4_FEATURE_RO_COMPAT_DIR_NLINK	0x0020
 #define EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE	0x0040
 

@@ -684,6 +691,7 @@ static inline int ext4_valid_inum(struct super_block *sb, unsigned long ino)
 					 EXT4_FEATURE_INCOMPAT_64BIT)
 #define EXT4_FEATURE_RO_COMPAT_SUPP	(EXT4_FEATURE_RO_COMPAT_SPARSE_SUPER| \
 					 EXT4_FEATURE_RO_COMPAT_LARGE_FILE| \
+					 EXT4_FEATURE_RO_COMPAT_GDT_CSUM| \
 					 EXT4_FEATURE_RO_COMPAT_DIR_NLINK | \
 					 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE | \
 					 EXT4_FEATURE_RO_COMPAT_BTREE_DIR)

index f283522..a2e1ea4 100644
@@ -3167,12 +3167,14 @@ int ext4_mark_inode_dirty(handle_t *handle, struct inode *inode)
 						      iloc, handle);
 			if (ret) {
 				EXT4_I(inode)->i_state |= EXT4_STATE_NO_EXPAND;
-				if (mnt_count != sbi->s_es->s_mnt_count) {
+				if (mnt_count !=
+					le16_to_cpu(sbi->s_es->s_mnt_count)) {
 					ext4_warning(inode->i_sb, __FUNCTION__,
 					"Unable to expand inode %lu. Delete"
 					" some EAs or run e2fsck.",
 					inode->i_ino);
-					mnt_count = sbi->s_es->s_mnt_count;
+					mnt_count =
+					  le16_to_cpu(sbi->s_es->s_mnt_count);
 				}
 			}
 		}

index b77b59f..722d4ef 100644
@@ -574,13 +574,13 @@ struct ext4_super_block {
 /*150*/	__le32	s_blocks_count_hi;	/* Blocks count */
 	__le32	s_r_blocks_count_hi;	/* Reserved blocks count */
 	__le32	s_free_blocks_count_hi;	/* Free blocks count */
-	__u16	s_min_extra_isize;	/* All inodes have at least # bytes */
-	__u16	s_want_extra_isize; 	/* New inodes should reserve # bytes */
-	__u32	s_flags;		/* Miscellaneous flags */
-	__u16   s_raid_stride;		/* RAID stride */
-	__u16   s_mmp_interval;         /* # seconds to wait in MMP checking */
-	__u64   s_mmp_block;            /* Block for multi-mount protection */
-	__u32   s_raid_stripe_width;    /* blocks on all data disks (N*stride)*/
+	__le16	s_min_extra_isize;	/* All inodes have at least # bytes */
+	__le16	s_want_extra_isize; 	/* New inodes should reserve # bytes */
+	__le32	s_flags;		/* Miscellaneous flags */
+	__le16  s_raid_stride;		/* RAID stride */
+	__le16  s_mmp_interval;         /* # seconds to wait in MMP checking */
+	__le64  s_mmp_block;            /* Block for multi-mount protection */
+	__le32  s_raid_stripe_width;    /* blocks on all data disks (N*stride)*/
 	__u32   s_reserved[163];        /* Padding to the end of the block */
 };
 

index b59610d..619db84 100644
@@ -1287,13 +1287,17 @@ static int ext4_check_descriptors (struct super_block * sb)
 	ext4_fsblk_t inode_table;
 	struct ext4_group_desc * gdp = NULL;
 	int desc_block = 0;
+	int flexbg_flag = 0;
 	int i;
 
+	if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_FLEX_BG))
+		flexbg_flag = 1;
+
 	ext4_debug ("Checking group descriptors");
 
 	for (i = 0; i < sbi->s_groups_count; i++)
 	{
-		if (i == sbi->s_groups_count - 1)
+		if (i == sbi->s_groups_count - 1 || flexbg_flag)
 			last_block = ext4_blocks_count(sbi->s_es) - 1;
 		else
 			last_block = first_block +

@@ -1338,7 +1342,8 @@ static int ext4_check_descriptors (struct super_block * sb)
 				   le16_to_cpu(gdp->bg_checksum));
 			return 0;
 		}
-		first_block += EXT4_BLOCKS_PER_GROUP(sb);
+		if (!flexbg_flag)
+			first_block += EXT4_BLOCKS_PER_GROUP(sb);
 		gdp = (struct ext4_group_desc *)
 			((__u8 *)gdp + EXT4_DESC_SIZE(sb));
 	}

index 722d4ef..46b304d 100644
@@ -682,13 +682,15 @@ static inline int ext4_valid_inum(struct super_block *sb, unsigned long ino)
 #define EXT4_FEATURE_INCOMPAT_META_BG		0x0010
 #define EXT4_FEATURE_INCOMPAT_EXTENTS		0x0040 /* extents support */
 #define EXT4_FEATURE_INCOMPAT_64BIT		0x0080
+#define EXT4_FEATURE_INCOMPAT_FLEX_BG		0x0200
 
 #define EXT4_FEATURE_COMPAT_SUPP	EXT2_FEATURE_COMPAT_EXT_ATTR
 #define EXT4_FEATURE_INCOMPAT_SUPP	(EXT4_FEATURE_INCOMPAT_FILETYPE| \
 					 EXT4_FEATURE_INCOMPAT_RECOVER| \
 					 EXT4_FEATURE_INCOMPAT_META_BG| \
 					 EXT4_FEATURE_INCOMPAT_EXTENTS| \
-					 EXT4_FEATURE_INCOMPAT_64BIT)
+					 EXT4_FEATURE_INCOMPAT_64BIT| \
+					 EXT4_FEATURE_INCOMPAT_FLEX_BG)
 #define EXT4_FEATURE_RO_COMPAT_SUPP	(EXT4_FEATURE_RO_COMPAT_SPARSE_SUPER| \
 					 EXT4_FEATURE_RO_COMPAT_LARGE_FILE| \
 					 EXT4_FEATURE_RO_COMPAT_GDT_CSUM| \

index 619db84..d8bb279 100644
@@ -1548,6 +1548,11 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent)
 		goto out_fail;
 	}
 
+	if (!sb_set_blocksize(sb, blocksize)) {
+		printk(KERN_ERR "EXT4-fs: bad blocksize %d.\n", blocksize);
+		goto out_fail;
+	}
+
 	/*
 	 * The ext4 superblock will not be buffer aligned for other than 1kB
 	 * block sizes.  We need to calculate the offset from buffer start.

index 46b304d..5d90616 100644
@@ -73,8 +73,8 @@
  * Macro-instructions used to manage several block sizes
  */
 #define EXT4_MIN_BLOCK_SIZE		1024
-#define	EXT4_MAX_BLOCK_SIZE		4096
-#define EXT4_MIN_BLOCK_LOG_SIZE		  10
+#define	EXT4_MAX_BLOCK_SIZE		65536
+#define EXT4_MIN_BLOCK_LOG_SIZE		10
 #ifdef __KERNEL__
 # define EXT4_BLOCK_SIZE(s)		((s)->s_blocksize)
 #else

index 2ba49ff..8236352 100644
@@ -67,7 +67,7 @@ int ext4_check_dir_entry (const char * function, struct inode * dir,
 			  unsigned long offset)
 {
 	const char * error_msg = NULL;
-	const int rlen = le16_to_cpu(de->rec_len);
+	const int rlen = ext4_rec_len_from_disk(de->rec_len);
 
 	if (rlen < EXT4_DIR_REC_LEN(1))
 		error_msg = "rec_len is smaller than minimal";

@@ -172,10 +172,10 @@ revalidate:
 				 * least that it is non-zero.  A
 				 * failure will be detected in the
 				 * dirent test below. */
-				if (le16_to_cpu(de->rec_len) <
-						EXT4_DIR_REC_LEN(1))
+				if (ext4_rec_len_from_disk(de->rec_len)
+						< EXT4_DIR_REC_LEN(1))
 					break;
-				i += le16_to_cpu(de->rec_len);
+				i += ext4_rec_len_from_disk(de->rec_len);
 			}
 			offset = i;
 			filp->f_pos = (filp->f_pos & ~(sb->s_blocksize - 1))

@@ -197,7 +197,7 @@ revalidate:
 				ret = stored;
 				goto out;
 			}
-			offset += le16_to_cpu(de->rec_len);
+			offset += ext4_rec_len_from_disk(de->rec_len);
 			if (le32_to_cpu(de->inode)) {
 				/* We might block in the next section
 				 * if the data destination is

@@ -219,7 +219,7 @@ revalidate:
 					goto revalidate;
 				stored ++;
 			}
-			filp->f_pos += le16_to_cpu(de->rec_len);
+			filp->f_pos += ext4_rec_len_from_disk(de->rec_len);
 		}
 		offset = 0;
 		brelse (bh);

207 lines not on this page · raw message

index 5d90616..ab608e8 100644
@@ -767,6 +767,26 @@ struct ext4_dir_entry_2 {
 #define EXT4_DIR_ROUND			(EXT4_DIR_PAD - 1)
 #define EXT4_DIR_REC_LEN(name_len)	(((name_len) + 8 + EXT4_DIR_ROUND) & \
 					 ~EXT4_DIR_ROUND)
+#define EXT4_MAX_REC_LEN		((1<<16)-1)
+
+static inline unsigned ext4_rec_len_from_disk(__le16 dlen)
+{
+	unsigned len = le16_to_cpu(dlen);
+
+	if (len == EXT4_MAX_REC_LEN)
+		return 1 << 16;
+	return len;
+}
+
+static inline __le16 ext4_rec_len_to_disk(unsigned len)
+{
+	if (len == (1 << 16))
+		return cpu_to_le16(EXT4_MAX_REC_LEN);
+	else if (len > (1 << 16))
+		BUG();
+	return cpu_to_le16(len);
+}
+
 /*
  * Hash Tree Directory indexing
  * (c) Daniel Phillips, 2001

index 639a32c..765c805 100644
@@ -775,7 +775,8 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
 		brelse(bh);
 
 		if (!sb_set_blocksize(sb, blocksize)) {
-			printk(KERN_ERR "EXT2-fs: blocksize too small for device.\n");
+			printk(KERN_ERR "EXT2-fs: bad blocksize %d.\n",
+				blocksize);
 			goto failed_sbi;
 		}
 

index 153d755..910a705 100644
@@ -86,8 +86,8 @@ static inline struct ext2_sb_info *EXT2_SB(struct super_block *sb)
  * Macro-instructions used to manage several block sizes
  */
 #define EXT2_MIN_BLOCK_SIZE		1024
-#define	EXT2_MAX_BLOCK_SIZE		4096
-#define EXT2_MIN_BLOCK_LOG_SIZE		  10
+#define EXT2_MAX_BLOCK_SIZE		65536
+#define EXT2_MIN_BLOCK_LOG_SIZE		10
 #ifdef __KERNEL__
 # define EXT2_BLOCK_SIZE(s)		((s)->s_blocksize)
 #else

index 9537316..b4bfd36 100644
@@ -1549,7 +1549,11 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent)
 		}
 
 		brelse (bh);
-		sb_set_blocksize(sb, blocksize);
+		if (!sb_set_blocksize(sb, blocksize)) {
+			printk(KERN_ERR "EXT3-fs: bad blocksize %d.\n",
+				blocksize);
+			goto out_fail;
+		}
 		logic_sb_block = (sb_block * EXT3_MIN_BLOCK_SIZE) / blocksize;
 		offset = (sb_block * EXT3_MIN_BLOCK_SIZE) % blocksize;
 		bh = sb_bread(sb, logic_sb_block);

index ece49a8..7aa5556 100644
@@ -76,8 +76,8 @@
  * Macro-instructions used to manage several block sizes
  */
 #define EXT3_MIN_BLOCK_SIZE		1024
-#define	EXT3_MAX_BLOCK_SIZE		4096
-#define EXT3_MIN_BLOCK_LOG_SIZE		  10
+#define	EXT3_MAX_BLOCK_SIZE		65536
+#define EXT3_MIN_BLOCK_LOG_SIZE		10
 #ifdef __KERNEL__
 # define EXT3_BLOCK_SIZE(s)		((s)->s_blocksize)
 #else

index 2bf49d7..1329bdb 100644
@@ -26,6 +26,24 @@
 
 typedef struct ext2_dir_entry_2 ext2_dirent;
 
+static inline unsigned ext2_rec_len_from_disk(__le16 dlen)
+{
+	unsigned len = le16_to_cpu(dlen);
+
+	if (len == EXT2_MAX_REC_LEN)
+		return 1 << 16;
+	return len;
+}
+
+static inline __le16 ext2_rec_len_to_disk(unsigned len)
+{
+	if (len == (1 << 16))
+		return cpu_to_le16(EXT2_MAX_REC_LEN);
+	else if (len > (1 << 16))
+		BUG();
+	return cpu_to_le16(len);
+}
+
 /*
  * ext2 uses block-sized chunks. Arguably, sector-sized ones would be
  * more robust, but we have what we have

@@ -95,7 +113,7 @@ static void ext2_check_page(struct page *page)
 	}
 	for (offs = 0; offs <= limit - EXT2_DIR_REC_LEN(1); offs += rec_len) {
 		p = (ext2_dirent *)(kaddr + offs);
-		rec_len = le16_to_cpu(p->rec_len);
+		rec_len = ext2_rec_len_from_disk(p->rec_len);
 
 		if (rec_len < EXT2_DIR_REC_LEN(1))
 			goto Eshort;

@@ -193,7 +211,8 @@ static inline int ext2_match (int len, const char * const name,
  */
 static inline ext2_dirent *ext2_next_entry(ext2_dirent *p)
 {
-	return (ext2_dirent *)((char*)p + le16_to_cpu(p->rec_len));
+	return (ext2_dirent *)((char*)p +
+			ext2_rec_len_from_disk(p->rec_len));
 }
 
 static inline unsigned 

@@ -305,7 +324,7 @@ ext2_readdir (struct file * filp, void * dirent, filldir_t filldir)
 					return 0;
 				}
 			}
-			filp->f_pos += le16_to_cpu(de->rec_len);
+			filp->f_pos += ext2_rec_len_from_disk(de->rec_len);
 		}
 		ext2_put_page(page);
 	}

@@ -413,7 +432,7 @@ void ext2_set_link(struct inode *dir, struct ext2_dir_entry_2 *de,
 			struct page *page, struct inode *inode)
 {
 	unsigned from = (char *) de - (char *) page_address(page);
-	unsigned to = from + le16_to_cpu(de->rec_len);
+	unsigned to = from + ext2_rec_len_from_disk(de->rec_len);
 	int err;
 
 	lock_page(page);

@@ -469,7 +488,7 @@ int ext2_add_link (struct dentry *dentry, struct inode *inode)
 				/* We hit i_size */
 				name_len = 0;
 				rec_len = chunk_size;
-				de->rec_len = cpu_to_le16(chunk_size);
+				de->rec_len = ext2_rec_len_to_disk(chunk_size);
 				de->inode = 0;
 				goto got_it;
 			}

@@ -483,7 +502,7 @@ int ext2_add_link (struct dentry *dentry, struct inode *inode)
 			if (ext2_match (namelen, name, de))
 				goto out_unlock;
 			name_len = EXT2_DIR_REC_LEN(de->name_len);
-			rec_len = le16_to_cpu(de->rec_len);
+			rec_len = ext2_rec_len_from_disk(de->rec_len);
 			if (!de->inode && rec_len >= reclen)
 				goto got_it;
 			if (rec_len >= name_len + reclen)

@@ -504,8 +523,8 @@ got_it:
 		goto out_unlock;
 	if (de->inode) {
 		ext2_dirent *de1 = (ext2_dirent *) ((char *) de + name_len);
-		de1->rec_len = cpu_to_le16(rec_len - name_len);
-		de->rec_len = cpu_to_le16(name_len);
+		de1->rec_len = ext2_rec_len_to_disk(rec_len - name_len);
+		de->rec_len = ext2_rec_len_to_disk(name_len);
 		de = de1;
 	}
 	de->name_len = namelen;

@@ -536,7 +555,7 @@ int ext2_delete_entry (struct ext2_dir_entry_2 * dir, struct page * page )
 	struct inode *inode = mapping->host;
 	char *kaddr = page_address(page);
 	unsigned from = ((char*)dir - kaddr) & ~(ext2_chunk_size(inode)-1);
-	unsigned to = ((char*)dir - kaddr) + le16_to_cpu(dir->rec_len);
+	unsigned to = ((char*)dir - kaddr) + ext2_rec_len_from_disk(dir->rec_len);
 	ext2_dirent * pde = NULL;
 	ext2_dirent * de = (ext2_dirent *) (kaddr + from);
 	int err;

@@ -557,7 +576,7 @@ int ext2_delete_entry (struct ext2_dir_entry_2 * dir, struct page * page )
 	err = mapping->a_ops->prepare_write(NULL, page, from, to);
 	BUG_ON(err);
 	if (pde)
-		pde->rec_len = cpu_to_le16(to-from);
+		pde->rec_len = ext2_rec_len_to_disk(to-from);
 	dir->inode = 0;
 	err = ext2_commit_chunk(page, from, to);
 	inode->i_ctime = inode->i_mtime = CURRENT_TIME_SEC;

@@ -591,14 +610,14 @@ int ext2_make_empty(struct inode *inode, struct inode *parent)
 	memset(kaddr, 0, chunk_size);
 	de = (struct ext2_dir_entry_2 *)kaddr;
 	de->name_len = 1;
-	de->rec_len = cpu_to_le16(EXT2_DIR_REC_LEN(1));
+	de->rec_len = ext2_rec_len_to_disk(EXT2_DIR_REC_LEN(1));
 	memcpy (de->name, ".\0\0", 4);
 	de->inode = cpu_to_le32(inode->i_ino);
 	ext2_set_de_type (de, inode);
 
 	de = (struct ext2_dir_entry_2 *)(kaddr + EXT2_DIR_REC_LEN(1));
 	de->name_len = 2;
-	de->rec_len = cpu_to_le16(chunk_size - EXT2_DIR_REC_LEN(1));
+	de->rec_len = ext2_rec_len_to_disk(chunk_size - EXT2_DIR_REC_LEN(1));
 	de->inode = cpu_to_le32(parent->i_ino);
 	memcpy (de->name, "..\0", 4);
 	ext2_set_de_type (de, inode);

index 910a705..41063d5 100644
@@ -557,5 +557,6 @@ enum {
 #define EXT2_DIR_ROUND 			(EXT2_DIR_PAD - 1)
 #define EXT2_DIR_REC_LEN(name_len)	(((name_len) + 8 + EXT2_DIR_ROUND) & \
 					 ~EXT2_DIR_ROUND)
+#define EXT2_MAX_REC_LEN		((1<<16)-1)
 
 #endif	/* _LINUX_EXT2_FS_H */

index c00723a..3c4c43a 100644
@@ -69,7 +69,7 @@ int ext3_check_dir_entry (const char * function, struct inode * dir,
 			  unsigned long offset)
 {
 	const char * error_msg = NULL;
-	const int rlen = le16_to_cpu(de->rec_len);
+	const int rlen = ext3_rec_len_from_disk(de->rec_len);
 
 	if (rlen < EXT3_DIR_REC_LEN(1))
 		error_msg = "rec_len is smaller than minimal";

@@ -177,10 +177,10 @@ revalidate:
 				 * least that it is non-zero.  A
 				 * failure will be detected in the
 				 * dirent test below. */
-				if (le16_to_cpu(de->rec_len) <
+				if (ext3_rec_len_from_disk(de->rec_len) <
 						EXT3_DIR_REC_LEN(1))
 					break;
-				i += le16_to_cpu(de->rec_len);
+				i += ext3_rec_len_from_disk(de->rec_len);
 			}
 			offset = i;
 			filp->f_pos = (filp->f_pos & ~(sb->s_blocksize - 1))

@@ -201,7 +201,7 @@ revalidate:
 				ret = stored;
 				goto out;
 			}
-			offset += le16_to_cpu(de->rec_len);
+			offset += ext3_rec_len_from_disk(de->rec_len);
 			if (le32_to_cpu(de->inode)) {
 				/* We might block in the next section
 				 * if the data destination is

@@ -223,7 +223,7 @@ revalidate:
 					goto revalidate;
 				stored ++;
 			}
-			filp->f_pos += le16_to_cpu(de->rec_len);
+			filp->f_pos += ext3_rec_len_from_disk(de->rec_len);
 		}
 		offset = 0;
 		brelse (bh);

227 lines not on this page · raw message

index 7aa5556..d9e378d 100644
@@ -660,6 +660,26 @@ struct ext3_dir_entry_2 {
 #define EXT3_DIR_ROUND			(EXT3_DIR_PAD - 1)
 #define EXT3_DIR_REC_LEN(name_len)	(((name_len) + 8 + EXT3_DIR_ROUND) & \
 					 ~EXT3_DIR_ROUND)
+#define EXT3_MAX_REC_LEN		((1<<16)-1)
+
+static inline unsigned ext3_rec_len_from_disk(__le16 dlen)
+{
+	unsigned len = le16_to_cpu(dlen);
+
+	if (len == EXT3_MAX_REC_LEN)
+		return 1 << 16;
+	return len;
+}
+
+static inline __le16 ext3_rec_len_to_disk(unsigned len)
+{
+	if (len == (1 << 16))
+		return cpu_to_le16(EXT3_MAX_REC_LEN);
+	else if (len > (1 << 16))
+		BUG();
+	return cpu_to_le16(len);
+}
+
 /*
  * Hash Tree Directory indexing
  * (c) Daniel Phillips, 2001

index d8bb279..02a2418 100644
@@ -70,9 +70,9 @@ static void ext4_write_super_lockfs(struct super_block *sb);
 ext4_fsblk_t ext4_block_bitmap(struct super_block *sb,
 			       struct ext4_group_desc *bg)
 {
-	return le32_to_cpu(bg->bg_block_bitmap) |
+	return le32_to_cpu(bg->bg_block_bitmap_lo) |
 		(EXT4_DESC_SIZE(sb) >= EXT4_MIN_DESC_SIZE_64BIT ?
-		 (ext4_fsblk_t)le32_to_cpu(bg->bg_block_bitmap_hi) << 32 : 0);
+		(ext4_fsblk_t)le32_to_cpu(bg->bg_block_bitmap_hi) << 32 : 0);
 }
 
 ext4_fsblk_t ext4_inode_bitmap(struct super_block *sb,

@@ -94,7 +94,7 @@ ext4_fsblk_t ext4_inode_table(struct super_block *sb,
 void ext4_block_bitmap_set(struct super_block *sb,
 			   struct ext4_group_desc *bg, ext4_fsblk_t blk)
 {
-	bg->bg_block_bitmap = cpu_to_le32((u32)blk);
+	bg->bg_block_bitmap_lo = cpu_to_le32((u32)blk);
 	if (EXT4_DESC_SIZE(sb) >= EXT4_MIN_DESC_SIZE_64BIT)
 		bg->bg_block_bitmap_hi = cpu_to_le32(blk >> 32);
 }

index ab608e8..c26e30e 100644
@@ -105,7 +105,7 @@
  */
 struct ext4_group_desc
 {
-	__le32	bg_block_bitmap;	/* Blocks bitmap block */
+	__le32	bg_block_bitmap_lo;	/* Blocks bitmap block */
 	__le32	bg_inode_bitmap;	/* Inodes bitmap block */
 	__le32	bg_inode_table;		/* Inodes table block */
 	__le16	bg_free_blocks_count;	/* Free blocks count */

index d1a8882..7a24b3f 100644
@@ -103,7 +103,7 @@ unsigned ext4_init_block_bitmap(struct super_block *sb, struct buffer_head *bh,
 		/* Set bits for block and inode bitmaps, and inode table */
 		ext4_set_bit(ext4_block_bitmap(sb, gdp) - start, bh->b_data);
 		ext4_set_bit(ext4_inode_bitmap(sb, gdp) - start, bh->b_data);
-		for (bit = le32_to_cpu(gdp->bg_inode_table) - start,
+		for (bit = (ext4_inode_table(sb, gdp) - start),
 		     bit_max = bit + sbi->s_itb_per_group; bit < bit_max; bit++)
 			ext4_set_bit(bit, bh->b_data);
 	}

index 02a2418..7548408 100644
@@ -78,17 +78,17 @@ ext4_fsblk_t ext4_block_bitmap(struct super_block *sb,
 ext4_fsblk_t ext4_inode_bitmap(struct super_block *sb,
 			       struct ext4_group_desc *bg)
 {
-	return le32_to_cpu(bg->bg_inode_bitmap) |
+	return le32_to_cpu(bg->bg_inode_bitmap_lo) |
 		(EXT4_DESC_SIZE(sb) >= EXT4_MIN_DESC_SIZE_64BIT ?
-		 (ext4_fsblk_t)le32_to_cpu(bg->bg_inode_bitmap_hi) << 32 : 0);
+		(ext4_fsblk_t)le32_to_cpu(bg->bg_inode_bitmap_hi) << 32 : 0);
 }
 
 ext4_fsblk_t ext4_inode_table(struct super_block *sb,
 			      struct ext4_group_desc *bg)
 {
-	return le32_to_cpu(bg->bg_inode_table) |
+	return le32_to_cpu(bg->bg_inode_table_lo) |
 		(EXT4_DESC_SIZE(sb) >= EXT4_MIN_DESC_SIZE_64BIT ?
-		 (ext4_fsblk_t)le32_to_cpu(bg->bg_inode_table_hi) << 32 : 0);
+		(ext4_fsblk_t)le32_to_cpu(bg->bg_inode_table_hi) << 32 : 0);
 }
 
 void ext4_block_bitmap_set(struct super_block *sb,

@@ -102,7 +102,7 @@ void ext4_block_bitmap_set(struct super_block *sb,
 void ext4_inode_bitmap_set(struct super_block *sb,
 			   struct ext4_group_desc *bg, ext4_fsblk_t blk)
 {
-	bg->bg_inode_bitmap  = cpu_to_le32((u32)blk);
+	bg->bg_inode_bitmap_lo  = cpu_to_le32((u32)blk);
 	if (EXT4_DESC_SIZE(sb) >= EXT4_MIN_DESC_SIZE_64BIT)
 		bg->bg_inode_bitmap_hi = cpu_to_le32(blk >> 32);
 }

@@ -110,7 +110,7 @@ void ext4_inode_bitmap_set(struct super_block *sb,
 void ext4_inode_table_set(struct super_block *sb,
 			  struct ext4_group_desc *bg, ext4_fsblk_t blk)
 {
-	bg->bg_inode_table = cpu_to_le32((u32)blk);
+	bg->bg_inode_table_lo = cpu_to_le32((u32)blk);
 	if (EXT4_DESC_SIZE(sb) >= EXT4_MIN_DESC_SIZE_64BIT)
 		bg->bg_inode_table_hi = cpu_to_le32(blk >> 32);
 }

index c26e30e..5eb4953 100644
@@ -106,8 +106,8 @@
 struct ext4_group_desc
 {
 	__le32	bg_block_bitmap_lo;	/* Blocks bitmap block */
-	__le32	bg_inode_bitmap;	/* Inodes bitmap block */
-	__le32	bg_inode_table;		/* Inodes table block */
+	__le32	bg_inode_bitmap_lo;	/* Inodes bitmap block */
+	__le32	bg_inode_table_lo;	/* Inodes table block */
 	__le16	bg_free_blocks_count;	/* Free blocks count */
 	__le16	bg_free_inodes_count;	/* Free inodes count */
 	__le16	bg_used_dirs_count;	/* Directories count */

index 7548408..dc7fe4c 100644
@@ -2593,7 +2593,7 @@ static int ext4_statfs (struct dentry * dentry, struct kstatfs * buf)
 
 	if (test_opt(sb, MINIX_DF)) {
 		sbi->s_overhead_last = 0;
-	} else if (sbi->s_blocks_last != le32_to_cpu(es->s_blocks_count)) {
+	} else if (sbi->s_blocks_last != ext4_blocks_count(es)) {
 		unsigned long ngroups = sbi->s_groups_count, i;
 		ext4_fsblk_t overhead = 0;
 		smp_rmb();

@@ -2628,7 +2628,7 @@ static int ext4_statfs (struct dentry * dentry, struct kstatfs * buf)
 		overhead += ngroups * (2 + sbi->s_itb_per_group);
 		sbi->s_overhead_last = overhead;
 		smp_wmb();
-		sbi->s_blocks_last = le32_to_cpu(es->s_blocks_count);
+		sbi->s_blocks_last = ext4_blocks_count(es);
 	}
 
 	buf->f_type = EXT4_SUPER_MAGIC;

index 5eb4953..339412d 100644
@@ -501,7 +501,7 @@ do {									       \
  */
 struct ext4_super_block {
 /*00*/	__le32	s_inodes_count;		/* Inodes count */
-	__le32	s_blocks_count;		/* Blocks count */
+	__le32	s_blocks_count_lo;	/* Blocks count */
 	__le32	s_r_blocks_count;	/* Reserved blocks count */
 	__le32	s_free_blocks_count;	/* Free blocks count */
 /*10*/	__le32	s_free_inodes_count;	/* Free inodes count */

@@ -1001,7 +1001,7 @@ extern void ext4_inode_table_set(struct super_block *sb,
 static inline ext4_fsblk_t ext4_blocks_count(struct ext4_super_block *es)
 {
 	return ((ext4_fsblk_t)le32_to_cpu(es->s_blocks_count_hi) << 32) |
-		le32_to_cpu(es->s_blocks_count);
+		le32_to_cpu(es->s_blocks_count_lo);
 }
 
 static inline ext4_fsblk_t ext4_r_blocks_count(struct ext4_super_block *es)

@@ -1019,7 +1019,7 @@ static inline ext4_fsblk_t ext4_free_blocks_count(struct ext4_super_block *es)
 static inline void ext4_blocks_count_set(struct ext4_super_block *es,
 					 ext4_fsblk_t blk)
 {
-	es->s_blocks_count = cpu_to_le32((u32)blk);
+	es->s_blocks_count_lo = cpu_to_le32((u32)blk);
 	es->s_blocks_count_hi = cpu_to_le32(blk >> 32);
 }
 

index dc7fe4c..dbd114c 100644
@@ -2635,7 +2635,7 @@ static int ext4_statfs (struct dentry * dentry, struct kstatfs * buf)
 	buf->f_bsize = sb->s_blocksize;
 	buf->f_blocks = ext4_blocks_count(es) - sbi->s_overhead_last;
 	buf->f_bfree = percpu_counter_sum(&sbi->s_freeblocks_counter);
-	es->s_free_blocks_count = cpu_to_le32(buf->f_bfree);
+	ext4_free_blocks_count_set(es, buf->f_bfree);
 	buf->f_bavail = buf->f_bfree - ext4_r_blocks_count(es);
 	if (buf->f_bfree < ext4_r_blocks_count(es))
 		buf->f_bavail = 0;

index 339412d..fb31c1a 100644
@@ -502,8 +502,8 @@ do {									       \
 struct ext4_super_block {
 /*00*/	__le32	s_inodes_count;		/* Inodes count */
 	__le32	s_blocks_count_lo;	/* Blocks count */
-	__le32	s_r_blocks_count;	/* Reserved blocks count */
-	__le32	s_free_blocks_count;	/* Free blocks count */
+	__le32	s_r_blocks_count_lo;	/* Reserved blocks count */
+	__le32	s_free_blocks_count_lo;	/* Free blocks count */
 /*10*/	__le32	s_free_inodes_count;	/* Free inodes count */
 	__le32	s_first_data_block;	/* First Data Block */
 	__le32	s_log_block_size;	/* Block size */

@@ -1007,13 +1007,13 @@ static inline ext4_fsblk_t ext4_blocks_count(struct ext4_super_block *es)
 static inline ext4_fsblk_t ext4_r_blocks_count(struct ext4_super_block *es)
 {
 	return ((ext4_fsblk_t)le32_to_cpu(es->s_r_blocks_count_hi) << 32) |
-		le32_to_cpu(es->s_r_blocks_count);
+		le32_to_cpu(es->s_r_blocks_count_lo);
 }
 
 static inline ext4_fsblk_t ext4_free_blocks_count(struct ext4_super_block *es)
 {
 	return ((ext4_fsblk_t)le32_to_cpu(es->s_free_blocks_count_hi) << 32) |
-		le32_to_cpu(es->s_free_blocks_count);
+		le32_to_cpu(es->s_free_blocks_count_lo);
 }
 
 static inline void ext4_blocks_count_set(struct ext4_super_block *es,

@@ -1026,14 +1026,14 @@ static inline void ext4_blocks_count_set(struct ext4_super_block *es,
 static inline void ext4_free_blocks_count_set(struct ext4_super_block *es,
 					      ext4_fsblk_t blk)
 {
-	es->s_free_blocks_count = cpu_to_le32((u32)blk);
+	es->s_free_blocks_count_lo = cpu_to_le32((u32)blk);
 	es->s_free_blocks_count_hi = cpu_to_le32(blk >> 32);
 }
 
 static inline void ext4_r_blocks_count_set(struct ext4_super_block *es,
 					   ext4_fsblk_t blk)
 {
-	es->s_r_blocks_count = cpu_to_le32((u32)blk);
+	es->s_r_blocks_count_lo = cpu_to_le32((u32)blk);
 	es->s_r_blocks_count_hi = cpu_to_le32(blk >> 32);
 }
 

index 2be404f..c03056a 100644
@@ -52,7 +52,7 @@ static ext4_fsblk_t ext_pblock(struct ext4_extent *ex)
 {
 	ext4_fsblk_t block;
 
-	block = le32_to_cpu(ex->ee_start);
+	block = le32_to_cpu(ex->ee_start_lo);
 	block |= ((ext4_fsblk_t) le16_to_cpu(ex->ee_start_hi) << 31) << 1;
 	return block;
 }

@@ -77,7 +77,7 @@ static ext4_fsblk_t idx_pblock(struct ext4_extent_idx *ix)
  */
 static void ext4_ext_store_pblock(struct ext4_extent *ex, ext4_fsblk_t pb)
 {
-	ex->ee_start = cpu_to_le32((unsigned long) (pb & 0xffffffff));
+	ex->ee_start_lo = cpu_to_le32((unsigned long) (pb & 0xffffffff));
 	ex->ee_start_hi = cpu_to_le16((unsigned long) ((pb >> 31) >> 1) & 0xffff);
 }
 

@@ -1409,8 +1409,7 @@ has_space:
 	eh->eh_entries = cpu_to_le16(le16_to_cpu(eh->eh_entries)+1);
 	nearex = path[depth].p_ext;
 	nearex->ee_block = newext->ee_block;
-	nearex->ee_start = newext->ee_start;
-	nearex->ee_start_hi = newext->ee_start_hi;
+	ext4_ext_store_pblock(nearex, ext_pblock(newext));
 	nearex->ee_len = newext->ee_len;
 
 merge:

@@ -2177,7 +2176,6 @@ int ext4_ext_convert_to_initialized(handle_t *handle, struct inode *inode,
 	}
 	/* ex2: iblock to iblock + maxblocks-1 : initialised */
 	ex2->ee_block = cpu_to_le32(iblock);
-	ex2->ee_start = cpu_to_le32(newblock);
 	ext4_ext_store_pblock(ex2, newblock);
 	ex2->ee_len = cpu_to_le16(allocated);
 	if (ex2 != ex)

index 81406f3..cb2dfbb 100644
@@ -74,7 +74,7 @@ struct ext4_extent {
 	__le32	ee_block;	/* first logical block extent covers */
 	__le16	ee_len;		/* number of blocks covered by extent */
 	__le16	ee_start_hi;	/* high 16 bits of physical block */
-	__le32	ee_start;	/* low 32 bits of physical block */
+	__le32	ee_start_lo;	/* low 32 bits of physical block */
 };
 
 /*

index c03056a..8528774 100644
@@ -65,7 +65,7 @@ static ext4_fsblk_t idx_pblock(struct ext4_extent_idx *ix)
 {
 	ext4_fsblk_t block;
 
-	block = le32_to_cpu(ix->ei_leaf);
+	block = le32_to_cpu(ix->ei_leaf_lo);
 	block |= ((ext4_fsblk_t) le16_to_cpu(ix->ei_leaf_hi) << 31) << 1;
 	return block;
 }

@@ -88,7 +88,7 @@ static void ext4_ext_store_pblock(struct ext4_extent *ex, ext4_fsblk_t pb)
  */
 static void ext4_idx_store_pblock(struct ext4_extent_idx *ix, ext4_fsblk_t pb)
 {
-	ix->ei_leaf = cpu_to_le32((unsigned long) (pb & 0xffffffff));
+	ix->ei_leaf_lo = cpu_to_le32((unsigned long) (pb & 0xffffffff));
 	ix->ei_leaf_hi = cpu_to_le16((unsigned long) ((pb >> 31) >> 1) & 0xffff);
 }
 

index cb2dfbb..d2045a2 100644
@@ -83,7 +83,7 @@ struct ext4_extent {
  */
 struct ext4_extent_idx {
 	__le32	ei_block;	/* index covers logical blocks from 'block' */
-	__le32	ei_leaf;	/* pointer to the physical block of the next *
+	__le32	ei_leaf_lo;	/* pointer to the physical block of the next *
 				 * level. leaf or next index could be there */
 	__le16	ei_leaf_hi;	/* high 16 bits of physical block */
 	__u16	ei_unused;

index 2a167d7..8d50879 100644
@@ -47,7 +47,7 @@ int ext4_sync_file(struct file * file, struct dentry *dentry, int datasync)
 	struct inode *inode = dentry->d_inode;
 	int ret = 0;
 
-	J_ASSERT(ext4_journal_current_handle() == 0);
+	J_ASSERT(ext4_journal_current_handle() == NULL);
 
 	/*
 	 * data=writeback:

index a2e1ea4..07afd4a 100644
@@ -1027,7 +1027,7 @@ struct buffer_head *ext4_getblk(handle_t *handle, struct inode *inode,
 		}
 		if (buffer_new(&dummy)) {
 			J_ASSERT(create != 0);
-			J_ASSERT(handle != 0);
+			J_ASSERT(handle != NULL);
 
 			/*
 			 * Now that we do not always journal data, we should

index 12c7d65..8638730 100644
@@ -1120,7 +1120,7 @@ int ext4_expand_extra_isize_ea(struct inode *inode, int new_extra_isize,
 	int total_ino, total_blk;
 	void *base, *start, *end;
 	int extra_isize = 0, error = 0, tried_min_extra_isize = 0;
-	int s_min_extra_isize = EXT4_SB(inode->i_sb)->s_es->s_min_extra_isize;
+	int s_min_extra_isize = le16_to_cpu(EXT4_SB(inode->i_sb)->s_es->s_min_extra_isize);
 
 	down_write(&EXT4_I(inode)->xattr_sem);
 retry:

@@ -1292,7 +1292,7 @@ retry:
 
 		i.name = b_entry_name;
 		i.value = buffer;
-		i.value_len = cpu_to_le32(size);
+		i.value_len = size;
 		error = ext4_xattr_block_find(inode, &i, bs);
 		if (error)
 			goto cleanup;

Index: linux-2.6.23-rc9/fs/jbd/commit.c
===================================================================
@@ -375,7 +375,7 @@ void journal_commit_transaction(journal_
 			struct buffer_head *bh = jh2bh(jh);
 
 			jbd_lock_bh_state(bh);
-			jbd_slab_free(jh->b_committed_data, bh->b_size);
+			jbd_free(jh->b_committed_data, bh->b_size);
 			jh->b_committed_data = NULL;
 			jbd_unlock_bh_state(bh);
 		}

@@ -792,14 +792,14 @@ restart_loop:
 		 * Otherwise, we can just throw away the frozen data now.
 		 */
 		if (jh->b_committed_data) {
-			jbd_slab_free(jh->b_committed_data, bh->b_size);
+			jbd_free(jh->b_committed_data, bh->b_size);
 			jh->b_committed_data = NULL;
 			if (jh->b_frozen_data) {
 				jh->b_committed_data = jh->b_frozen_data;
 				jh->b_frozen_data = NULL;
 			}
 		} else if (jh->b_frozen_data) {
-			jbd_slab_free(jh->b_frozen_data, bh->b_size);
+			jbd_free(jh->b_frozen_data, bh->b_size);
 			jh->b_frozen_data = NULL;
 		}
 

131 lines not on this page · raw message

Index: linux-2.6.23-rc9/fs/jbd/transaction.c
===================================================================
@@ -668,7 +668,7 @@ repeat:
 				JBUFFER_TRACE(jh, "allocate memory for buffer");
 				jbd_unlock_bh_state(bh);
 				frozen_buffer =
-					jbd_slab_alloc(jh2bh(jh)->b_size,
+					jbd_alloc(jh2bh(jh)->b_size,
 							 GFP_NOFS);
 				if (!frozen_buffer) {
 					printk(KERN_EMERG

@@ -728,7 +728,7 @@ done:
 
 out:
 	if (unlikely(frozen_buffer))	/* It's usually NULL */
-		jbd_slab_free(frozen_buffer, bh->b_size);
+		jbd_free(frozen_buffer, bh->b_size);
 
 	JBUFFER_TRACE(jh, "exit");
 	return error;

@@ -881,7 +881,7 @@ int journal_get_undo_access(handle_t *ha
 
 repeat:
 	if (!jh->b_committed_data) {
-		committed_data = jbd_slab_alloc(jh2bh(jh)->b_size, GFP_NOFS);
+		committed_data = jbd_alloc(jh2bh(jh)->b_size, GFP_NOFS);
 		if (!committed_data) {
 			printk(KERN_EMERG "%s: No memory for committed data\n",
 				__FUNCTION__);

@@ -908,7 +908,7 @@ repeat:
 out:
 	journal_put_journal_head(jh);
 	if (unlikely(committed_data))
-		jbd_slab_free(committed_data, bh->b_size);
+		jbd_free(committed_data, bh->b_size);
 	return err;
 }
 

Index: linux-2.6.23-rc9/include/linux/jbd.h
===================================================================
@@ -72,14 +72,21 @@ extern int journal_enable_debug;
 #endif
 
 extern void * __jbd_kmalloc (const char *where, size_t size, gfp_t flags, int retry);
-extern void * jbd_slab_alloc(size_t size, gfp_t flags);
-extern void jbd_slab_free(void *ptr, size_t size);
-
 #define jbd_kmalloc(size, flags) \
 	__jbd_kmalloc(__FUNCTION__, (size), (flags), journal_oom_retry)
 #define jbd_rep_kmalloc(size, flags) \
 	__jbd_kmalloc(__FUNCTION__, (size), (flags), 1)
 
+static inline void *jbd_alloc(size_t size, gfp_t flags)
+{
+	return (void *)__get_free_pages(flags, get_order(size));
+}
+
+static inline void jbd_free(void *ptr, size_t size)
+{
+	free_pages((unsigned long)ptr, get_order(size));
+};
+
 #define JFS_MIN_JOURNAL_BLOCKS 1024
 
 #ifdef __KERNEL__

Index: linux-2.6.23-rc9/fs/jbd2/commit.c
===================================================================
@@ -384,7 +384,7 @@ void jbd2_journal_commit_transaction(jou
 			struct buffer_head *bh = jh2bh(jh);
 
 			jbd_lock_bh_state(bh);
-			jbd2_slab_free(jh->b_committed_data, bh->b_size);
+			jbd2_free(jh->b_committed_data, bh->b_size);
 			jh->b_committed_data = NULL;
 			jbd_unlock_bh_state(bh);
 		}

@@ -801,14 +801,14 @@ restart_loop:
 		 * Otherwise, we can just throw away the frozen data now.
 		 */
 		if (jh->b_committed_data) {
-			jbd2_slab_free(jh->b_committed_data, bh->b_size);
+			jbd2_free(jh->b_committed_data, bh->b_size);
 			jh->b_committed_data = NULL;
 			if (jh->b_frozen_data) {
 				jh->b_committed_data = jh->b_frozen_data;
 				jh->b_frozen_data = NULL;
 			}
 		} else if (jh->b_frozen_data) {
-			jbd2_slab_free(jh->b_frozen_data, bh->b_size);
+			jbd2_free(jh->b_frozen_data, bh->b_size);
 			jh->b_frozen_data = NULL;
 		}
 

131 lines not on this page · raw message

Index: linux-2.6.23-rc9/fs/jbd2/transaction.c
===================================================================
@@ -236,7 +236,7 @@ out:
 /* Allocate a new handle.  This should probably be in a slab... */
 static handle_t *new_handle(int nblocks)
 {
-	handle_t *handle = jbd_alloc_handle(GFP_NOFS);
+	handle_t *handle = jbd2_alloc_handle(GFP_NOFS);
 	if (!handle)
 		return NULL;
 	memset(handle, 0, sizeof(*handle));

@@ -282,7 +282,7 @@ handle_t *jbd2_journal_start(journal_t *
 
 	err = start_this_handle(journal, handle);
 	if (err < 0) {
-		jbd_free_handle(handle);
+		jbd2_free_handle(handle);
 		current->journal_info = NULL;
 		handle = ERR_PTR(err);
 	}

@@ -668,7 +668,7 @@ repeat:
 				JBUFFER_TRACE(jh, "allocate memory for buffer");
 				jbd_unlock_bh_state(bh);
 				frozen_buffer =
-					jbd2_slab_alloc(jh2bh(jh)->b_size,
+					jbd2_alloc(jh2bh(jh)->b_size,
 							 GFP_NOFS);
 				if (!frozen_buffer) {
 					printk(KERN_EMERG

@@ -728,7 +728,7 @@ done:
 
 out:
 	if (unlikely(frozen_buffer))	/* It's usually NULL */
-		jbd2_slab_free(frozen_buffer, bh->b_size);
+		jbd2_free(frozen_buffer, bh->b_size);
 
 	JBUFFER_TRACE(jh, "exit");
 	return error;

@@ -881,7 +881,7 @@ int jbd2_journal_get_undo_access(handle_
 
 repeat:
 	if (!jh->b_committed_data) {
-		committed_data = jbd2_slab_alloc(jh2bh(jh)->b_size, GFP_NOFS);
+		committed_data = jbd2_alloc(jh2bh(jh)->b_size, GFP_NOFS);
 		if (!committed_data) {
 			printk(KERN_EMERG "%s: No memory for committed data\n",
 				__FUNCTION__);

@@ -908,7 +908,7 @@ repeat:
 out:
 	jbd2_journal_put_journal_head(jh);
 	if (unlikely(committed_data))
-		jbd2_slab_free(committed_data, bh->b_size);
+		jbd2_free(committed_data, bh->b_size);
 	return err;
 }
 

@@ -1411,7 +1411,7 @@ int jbd2_journal_stop(handle_t *handle)
 		spin_unlock(&journal->j_state_lock);
 	}
 
-	jbd_free_handle(handle);
+	jbd2_free_handle(handle);
 	return err;
 }
 

Index: linux-2.6.23-rc9/include/linux/jbd2.h
===================================================================
@@ -72,14 +72,22 @@ extern u8 jbd2_journal_enable_debug;
 #endif
 
 extern void * __jbd2_kmalloc (const char *where, size_t size, gfp_t flags, int retry);
-extern void * jbd2_slab_alloc(size_t size, gfp_t flags);
-extern void jbd2_slab_free(void *ptr, size_t size);
-
 #define jbd_kmalloc(size, flags) \
 	__jbd2_kmalloc(__FUNCTION__, (size), (flags), journal_oom_retry)
 #define jbd_rep_kmalloc(size, flags) \
 	__jbd2_kmalloc(__FUNCTION__, (size), (flags), 1)
 
+
+static inline void *jbd2_alloc(size_t size, gfp_t flags)
+{
+	return (void *)__get_free_pages(flags, get_order(size));
+}
+
+static inline void jbd2_free(void *ptr, size_t size)
+{
+	free_pages((unsigned long)ptr, get_order(size));
+};
+
 #define JBD2_MIN_JOURNAL_BLOCKS 1024
 
 #ifdef __KERNEL__

@@ -959,12 +967,12 @@ void jbd2_journal_put_journal_head(struc
  */
 extern struct kmem_cache *jbd2_handle_cache;
 
-static inline handle_t *jbd_alloc_handle(gfp_t gfp_flags)
+static inline handle_t *jbd2_alloc_handle(gfp_t gfp_flags)
 {
 	return kmem_cache_alloc(jbd2_handle_cache, gfp_flags);
 }
 
-static inline void jbd_free_handle(handle_t *handle)
+static inline void jbd2_free_handle(handle_t *handle)
 {
 	kmem_cache_free(jbd2_handle_cache, handle);
 }

Index: linux-2.6.23-rc9/fs/jbd/journal.c
===================================================================
@@ -653,7 +653,7 @@ static journal_t * journal_init_common (
 	journal_t *journal;
 	int err;
 
-	journal = jbd_kmalloc(sizeof(*journal), GFP_KERNEL);
+	journal = kmalloc(sizeof(*journal), GFP_KERNEL);
 	if (!journal)
 		goto fail;
 	memset(journal, 0, sizeof(*journal));

@@ -1607,15 +1607,6 @@ int journal_blocks_per_page(struct inode
 }
 
 /*
- * Simple support for retrying memory allocations.  Introduced to help to
- * debug different VM deadlock avoidance strategies.
- */
-void * __jbd_kmalloc (const char *where, size_t size, gfp_t flags, int retry)
-{
-	return kmalloc(size, flags | (retry ? __GFP_NOFAIL : 0));
-}
-
-/*
  * Journal_head storage management
  */
 static struct kmem_cache *journal_head_cache;

Index: linux-2.6.23-rc9/fs/jbd/transaction.c
===================================================================
@@ -96,8 +96,8 @@ static int start_this_handle(journal_t *
 
 alloc_transaction:
 	if (!journal->j_running_transaction) {
-		new_transaction = jbd_kmalloc(sizeof(*new_transaction),
-						GFP_NOFS);
+		new_transaction = kmalloc(sizeof(*new_transaction),
+						GFP_NOFS|__GFP_NOFAIL);
 		if (!new_transaction) {
 			ret = -ENOMEM;
 			goto out;

Index: linux-2.6.23-rc9/include/linux/jbd.h
===================================================================
@@ -71,12 +71,6 @@ extern int journal_enable_debug;
 #define jbd_debug(f, a...)	/**/
 #endif
 
-extern void * __jbd_kmalloc (const char *where, size_t size, gfp_t flags, int retry);
-#define jbd_kmalloc(size, flags) \
-	__jbd_kmalloc(__FUNCTION__, (size), (flags), journal_oom_retry)
-#define jbd_rep_kmalloc(size, flags) \
-	__jbd_kmalloc(__FUNCTION__, (size), (flags), 1)
-
 static inline void *jbd_alloc(size_t size, gfp_t flags)
 {
 	return (void *)__get_free_pages(flags, get_order(size));

Index: linux-2.6.23-rc9/fs/jbd2/journal.c
===================================================================
@@ -654,7 +654,7 @@ static journal_t * journal_init_common (
 	journal_t *journal;
 	int err;
 
-	journal = jbd_kmalloc(sizeof(*journal), GFP_KERNEL);
+	journal = kmalloc(sizeof(*journal), GFP_KERNEL);
 	if (!journal)
 		goto fail;
 	memset(journal, 0, sizeof(*journal));

@@ -1619,15 +1619,6 @@ size_t journal_tag_bytes(journal_t *jour
 }
 
 /*
- * Simple support for retrying memory allocations.  Introduced to help to
- * debug different VM deadlock avoidance strategies.
- */
-void * __jbd2_kmalloc (const char *where, size_t size, gfp_t flags, int retry)
-{
-	return kmalloc(size, flags | (retry ? __GFP_NOFAIL : 0));
-}
-
-/*
  * Journal_head storage management
  */
 static struct kmem_cache *jbd2_journal_head_cache;

Index: linux-2.6.23-rc9/fs/jbd2/transaction.c
===================================================================
@@ -96,8 +96,8 @@ static int start_this_handle(journal_t *
 
 alloc_transaction:
 	if (!journal->j_running_transaction) {
-		new_transaction = jbd_kmalloc(sizeof(*new_transaction),
-						GFP_NOFS);
+		new_transaction = kmalloc(sizeof(*new_transaction),
+						GFP_NOFS|__GFP_NOFAIL);
 		if (!new_transaction) {
 			ret = -ENOMEM;
 			goto out;

Index: linux-2.6.23-rc9/include/linux/jbd2.h
===================================================================
@@ -71,13 +71,6 @@ extern u8 jbd2_journal_enable_debug;
 #define jbd_debug(f, a...)	/**/
 #endif
 
-extern void * __jbd2_kmalloc (const char *where, size_t size, gfp_t flags, int retry);
-#define jbd_kmalloc(size, flags) \
-	__jbd2_kmalloc(__FUNCTION__, (size), (flags), journal_oom_retry)
-#define jbd_rep_kmalloc(size, flags) \
-	__jbd2_kmalloc(__FUNCTION__, (size), (flags), 1)
-
-
 static inline void *jbd2_alloc(size_t size, gfp_t flags)
 {
 	return (void *)__get_free_pages(flags, get_order(size));