Merge jfs@jfs.bkbits.net:linux-2.5

into kleikamp.austin.ibm.com:/home/shaggy/bk/jfs-2.5

Documentation/filesystems/jfs.txt

-IBM's Journaled File System (JFS) for Linux version 1.0.15
+IBM's Journaled File System (JFS) for Linux
+
+JFS Homepage:  http://oss.software.ibm.com/jfs/
+
 Team members
+------------
 Steve Best         sbest@us.ibm.com
 Dave Kleikamp      shaggy@austin.ibm.com  
 Barry Arndt        barndt@us.ibm.com
-Christoph Hellwig  hch@caldera.de
-
-
-Release February 15, 2002 (version 1.0.15)
-
-This is our fifty-third release of IBM's Enterprise JFS technology port to Linux.
-Beta 1 was release 0.1.0 on 12/8/2000, Beta 2 was release 0.2.0 on 3/7/2001, 
-Beta 3 was release 0.3.0 on 4/30/2001, and release 1.0.0 on 6/28/2001.
- 
-The changelog.jfs file contains detailed information of changes done in each source
-code drop.
-
-JFS has a source tree that can be built on 2.4.3 - 2.4.17 and 2.5.4 kernel.org
-source trees.
- 
-Our current goal on the 2.5.x series of the kernel is to update to the latest 
-2.5.x version and only support the latest version of this kernel.
-This will change when the distros start shipping the 2.5.x series of the kernel.
-
-Our current goal on the 2.4.x series of the kernel is to continue to support
-all of the kernels in this series as we do today.
-
-There is an anonymous cvs access available for the JFS tree. The steps below are
-what is needed to pull the JFS cvs tree from the oss.software.ibm.com server.
-
-id anoncvs
-password anoncvs
-
-To checkout 2.4.x series of the JFS files do the following:
-CVSROOT should be set to :pserver:anoncvs@oss.software.ibm.com:/usr/cvs/jfs
-cvs checkout linux24
-
-To checkout 2.5.2 series of the JFS files do the following:
-CVSROOT should be set to :pserver:anoncvs@oss.software.ibm.com:/usr/cvs/jfs
-cvs checkout linux25
-
-To checkout the JFS utilities do the following:
-CVSROOT should be set to :pserver:anoncvs@oss.software.ibm.com:/usr/cvs/jfs
-cvs checkout jfsutils
-
-The cvs tree contains the latest changes being done to JFS. To receive notification
-of commits to the cvs tree, please send e-mail to linuxjfs@us.ibm.com stating that 
-you would like notifications sent to you. 
-
-The jfs-2.4-1.0.15-patch.tar.gz is the easiest way to get the latest file system
-source code on your system. There are also patch files that can move your jfs source
-code from one release to another. If you have release 1.0.14 and would like to move
-to release 1.0.15 the patch file named jfs-2.4-1_0_14-to-1_0_15-patch.gz will do that.
-
-The jfs-2.4-1.0.15-patch.tar.gz file contains a readme and patch files for different
-levels of the 2.4 kernel. Please see the README in the jfs-2.4-1.0.15-patch.tar.gz
-file for help on applying the two patch files. 
-
-
-The following files in the kernel source tree have been changed so JFS can be built.
-The jfs-2.4-1.0.15.tar.gz source tar ball contains each of the files below with
-the extension of the kernel level it is associated with. As an example, there are now
-four Config.in files named Config.in-2.4.0, Config.in-2.4.5, Config.in-2.4.7 and 
-Config.in-2.4.17.
-
-
-If you use the jfs-2.4-1.0.15.tar.gz to build JFS you must rename each of the 
-kernel files to the file names listed below. The standard kernel from www.kernel.org 
-is the source of the kernel files that are included in the jfs tar file. 
-
-
-In sub dir fs Config.in, Makefile
-In sub dir fs/nls Config.in
-In sub dir Documentation Configure.help, Changes
-In sub dir Documentation/filesystems 00-INDEX
-In sub dir linux MAINTAINERS
+Christoph Hellwig  hch@infradead.org
 
-Please backup the above files before the JFS tar file is added to the kernel source 
-tree. All JFS files are located in the include/linux/jfs or fs/jfs sub dirs.
+The following mount options are supported:
 
-Our development team has used the Linux kernel levels  2.4.3 - 2.4.17 kernels
-with gcc version egcs-2.91.66 19990314/Linux (egcs-1.1.2 release) 
-for our port so far. A goal of the JFS team is to have JFS run on all architectures
-that Linux supports, there is no architecture specific code in JFS. JFS has been run
-on the following architectures (x86, PowerPC, Alpha, s/390, ARM) so far. 
-
-To make JFS build, during the "make config" step of building the kernel answer y to
-the Prompt for development and/or incomplete code/drivers in the Code maturity level
-options section. In the Filesystems section use the m for the answer to 
-JFS filesystem support (experimental) (CONFIG_JFS_FS) [Y/m/n?]
- 
-
-Build in /usr/src/linux with the command:
-
-
-make modules
-make modules_install
-
-If you rebuild jfs.o after having mounted and unmounted a partition, "modprobe -r jfs" 
-will unload the old module.
-
-For the file system debugging messages are being written to /var/log/messages.
-
-Please see the readme in the utilities package for information about building
-the JFS utilities.
+iocharset=name	Character set to use for converting from Unicode to
+		ASCII.  The default is compiled into the kernel as
+		CONFIG_NLS_DEFAULT.  Use iocharset=utf8 for UTF8
+		translations.  This requires CONFIG_NLS_UTF8 to be set
+		in the kernel .config file.
 
 JFS TODO list:
 
 Plans for our near term development items
 
-   - get defrag capabilities operational in the FS
-   - get extendfs capabilities operational in the FS
-   - test EXTENDFS utility, for growing JFS partitions
-   - test defrag utility, calls file system to defrag the file system.
-   - add support for block sizes (512,1024,2048)
-   - add support for logfile on dedicated partition
+   - implement online resize for extending JFS volumes
+   - enhance support for logfile on dedicated partition
+   - get access control list functionality operational
+   - get extended attributes functionality operational
 
-   
 Longer term work items
 
-   - get access control list functionality operational
-   - get extended attributes functionality operational
+   - implement defrag utility, for online defragmenting
    - add quota support
+   - add support for block sizes (512,1024,2048)
 
 Please send bugs, comments, cards and letters to linuxjfs@us.ibm.com.
 
-The JFS mailing list can be subscribed to by using the link labeled "Mail list Subscribe"
-at our web page http://oss.software.ibm.com/jfs/.
-
-
-
-
-
-
-
-
+The JFS mailing list can be subscribed to by using the link labeled
+"Mail list Subscribe" at our web page http://oss.software.ibm.com/jfs/.

fs/jfs/file.c

@@ -45,15 +45,6 @@ int jfs_fsync(struct file *file, struct dentry *dentry, int datasync)
 	return rc ? -EIO : 0;
 }
 
-struct file_operations jfs_file_operations = {
-	open:		generic_file_open,
-	llseek:		generic_file_llseek,
-	write:		generic_file_write,
-	read:		generic_file_read,
-	mmap:		generic_file_mmap,
-	fsync:		jfs_fsync,
-};
-
 /*
  * Guts of jfs_truncate.  Called with locks already held.  Can be called
  * with directory for truncating directory index table.
@@ -98,5 +89,14 @@ static void jfs_truncate(struct inode *ip)
 }
 
 struct inode_operations jfs_file_inode_operations = {
-	truncate:	jfs_truncate,
+	.truncate	= jfs_truncate,
+};
+
+struct file_operations jfs_file_operations = {
+	.open		= generic_file_open,
+	.llseek		= generic_file_llseek,
+	.write		= generic_file_write,
+	.read		= generic_file_read,
+	.mmap		= generic_file_mmap,
+	.fsync		= jfs_fsync,
 };

fs/jfs/inode.c

@@ -300,11 +300,11 @@ static int jfs_direct_IO(int rw, struct inode *inode, char *buf,
 }
 
 struct address_space_operations jfs_aops = {
-	readpage:	jfs_readpage,
-	writepage:	jfs_writepage,
-	sync_page:	block_sync_page,
-	prepare_write:	jfs_prepare_write,
-	commit_write:	generic_commit_write,
-	bmap:		jfs_bmap,
-	direct_IO:	jfs_direct_IO,
+	.readpage	= jfs_readpage,
+	.writepage	= jfs_writepage,
+	.sync_page	= block_sync_page,
+	.prepare_write	= jfs_prepare_write,
+	.commit_write	= generic_commit_write,
+	.bmap		= jfs_bmap,
+	.direct_IO	= jfs_direct_IO,
 };

fs/jfs/jfs_dtree.c

@@ -2368,7 +2368,7 @@ int dtRelocate(tid_t tid, struct inode *ip, s64 lmxaddr, pxd_t * opxd,
 	xlen = lengthPXD(opxd);
 
 	jEVENT(0, ("dtRelocate: lmxaddr:%Ld xaddr:%Ld:%Ld xlen:%d\n",
-		   lmxaddr, oxaddr, nxaddr, xlen));
+		   (long long)lmxaddr, (long long)oxaddr, (long long)nxaddr, xlen));
 
 	/*
 	 *      1. get the internal parent dtpage covering
@@ -3044,7 +3044,7 @@ int jfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
 				if (d_namleft == 0) {
 					jERROR(1,("JFS:Dtree error: "
 					  "ino = %ld, bn=%Ld, index = %d\n",
-						  ip->i_ino, bn, i));
+						  (long)ip->i_ino, (long long)bn, i));
 					updateSuper(ip->i_sb, FM_DIRTY);
 					goto skip_one;
 				}
@@ -3101,6 +3101,7 @@ int jfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
       out:
 	kfree(d_name);
 	DT_PUTPAGE(mp);
+
 	return rc;
 }
 

fs/jfs/jfs_logmgr.c

@@ -1080,8 +1080,8 @@ int lmLogOpen(struct super_block *sb, log_t ** logptr)
 	 * file system to log have 1-to-1 relationship;
 	 */
 
-	log->bdev = sb->s_bdev;
 	log->flag = JFS_INLINELOG;
+	log->bdev = sb->s_bdev;
 	log->base = addressPXD(&JFS_SBI(sb)->logpxd);
 	log->size = lengthPXD(&JFS_SBI(sb)->logpxd) >>
 	    (L2LOGPSIZE - sb->s_blocksize_bits);

fs/jfs/jfs_mount.c

@@ -426,14 +426,15 @@ static int chkSuper(struct super_block *sb)
  */
 int updateSuper(struct super_block *sb, uint state)
 {
-	int rc;
-	metapage_t *mp;
 	struct jfs_superblock *j_sb;
+	struct jfs_sb_info *sbi = JFS_SBI(sb);
+	metapage_t *mp;
+	int rc;
 
 	/*
 	 * Only fsck can fix dirty state
 	 */
-	if (JFS_SBI(sb)->state == FM_DIRTY)
+	if (sbi->state == FM_DIRTY)
 		return 0;
 
 	if ((rc = readSuper(sb, &mp)))
@@ -442,13 +443,12 @@ int updateSuper(struct super_block *sb, uint state)
 	j_sb = (struct jfs_superblock *) (mp->data);
 
 	j_sb->s_state = cpu_to_le32(state);
-	JFS_SBI(sb)->state = state;
+	sbi->state = state;
 
 	if (state == FM_MOUNT) {
 		/* record log's dev_t and mount serial number */
-		j_sb->s_logdev =
-			cpu_to_le32(JFS_SBI(sb)->log->bdev->bd_dev);
-		j_sb->s_logserial = cpu_to_le32(JFS_SBI(sb)->log->serial);
+		j_sb->s_logdev = cpu_to_le32(sbi->log->bdev->bd_dev);
+		j_sb->s_logserial = cpu_to_le32(sbi->log->serial);
 	} else if (state == FM_CLEAN) {
 		/*
 		 * If this volume is shared with OS/2, OS/2 will need to

fs/jfs/jfs_txnmgr.c

@@ -2824,10 +2824,7 @@ int jfs_lazycommit(void)
 			 * We can be running indefinately if other processors
 			 * are adding transactions to this list
 			 */
-			if (need_resched()) {
-				current->state = TASK_RUNNING;
-				schedule();
-			}
+			cond_resched();
 			LAZY_LOCK(flags);
 		}
 
@@ -2945,10 +2942,7 @@ int jfs_sync(void)
 				 * Just to be safe.  I don't know how
 				 * long we can run without blocking
 				 */
-				if (need_resched()) {
-					current->state = TASK_RUNNING;
-					schedule();
-				}
+				cond_resched();
 				TXN_LOCK();
 			} else {
 				/* We can't get the write lock.  It may

fs/jfs/namei.c

@@ -1437,19 +1437,19 @@ struct dentry *jfs_get_parent(struct dentry *dentry)
 }
 
 struct inode_operations jfs_dir_inode_operations = {
-	create:		jfs_create,
-	lookup:		jfs_lookup,
-	link:		jfs_link,
-	unlink:		jfs_unlink,
-	symlink:	jfs_symlink,
-	mkdir:		jfs_mkdir,
-	rmdir:		jfs_rmdir,
-	mknod:		jfs_mknod,
-	rename:		jfs_rename,
+	.create		= jfs_create,
+	.lookup		= jfs_lookup,
+	.link		= jfs_link,
+	.unlink		= jfs_unlink,
+	.symlink	= jfs_symlink,
+	.mkdir		= jfs_mkdir,
+	.rmdir		= jfs_rmdir,
+	.mknod		= jfs_mknod,
+	.rename		= jfs_rename,
 };
 
 struct file_operations jfs_dir_operations = {
-	read:		generic_read_dir,
-	readdir:	jfs_readdir,
-	fsync:		jfs_fsync,
+	.read		= generic_read_dir,
+	.readdir	= jfs_readdir,
+	.fsync		= jfs_fsync,
 };

fs/jfs/super.c

@@ -36,6 +36,10 @@ MODULE_LICENSE("GPL");
 
 static kmem_cache_t * jfs_inode_cachep;
 
+static struct super_operations jfs_super_operations;
+static struct export_operations jfs_export_operations;
+static struct file_system_type jfs_fs_type;
+
 int jfs_stop_threads;
 static pid_t jfsIOthread;
 static pid_t jfsCommitThread;
@@ -223,21 +227,6 @@ int jfs_remount(struct super_block *sb, int *flags, char *data)
 	return 0;
 }
 
-static struct super_operations jfs_super_operations = {
-	alloc_inode:	jfs_alloc_inode,
-	destroy_inode:	jfs_destroy_inode,
-	dirty_inode:	jfs_dirty_inode,
-	write_inode:	jfs_write_inode,
-	delete_inode:	jfs_delete_inode,
-	put_super:	jfs_put_super,
-	statfs:		jfs_statfs,
-	remount_fs:	jfs_remount,
-};
-
-static struct export_operations jfs_export_operations = {
-	get_parent:	jfs_get_parent,
-};
-
 static int jfs_fill_super(struct super_block *sb, void *data, int silent)
 {
 	struct jfs_sb_info *sbi;
@@ -362,12 +351,27 @@ static struct super_block *jfs_get_sb(struct file_system_type *fs_type,
 	return get_sb_bdev(fs_type, flags, dev_name, data, jfs_fill_super);
 }
 
+static struct super_operations jfs_super_operations = {
+	.alloc_inode	= jfs_alloc_inode,
+	.destroy_inode	= jfs_destroy_inode,
+	.dirty_inode	= jfs_dirty_inode,
+	.write_inode	= jfs_write_inode,
+	.delete_inode	= jfs_delete_inode,
+	.put_super	= jfs_put_super,
+	.statfs		= jfs_statfs,
+	.remount_fs	= jfs_remount,
+};
+
+static struct export_operations jfs_export_operations = {
+	.get_parent	= jfs_get_parent,
+};
+
 static struct file_system_type jfs_fs_type = {
-	owner:		THIS_MODULE,
-	name:		"jfs",
-	get_sb:		jfs_get_sb,
-	kill_sb:	kill_block_super,
-	fs_flags:	FS_REQUIRES_DEV,
+	.owner		= THIS_MODULE,
+	.name		= "jfs",
+	.get_sb		= jfs_get_sb,
+	.kill_sb	= kill_block_super,
+	.fs_flags	= FS_REQUIRES_DEV,
 };
 
 extern int metapage_init(void);

fs/jfs/symlink.c

@@ -19,17 +19,6 @@
 #include <linux/fs.h>
 #include "jfs_incore.h"
 
-static int jfs_readlink(struct dentry *, char *buffer, int buflen);
-static int jfs_follow_link(struct dentry *dentry, struct nameidata *nd);
-
-/*
- * symlinks can't do much...
- */
-struct inode_operations jfs_symlink_inode_operations = {
-	readlink:	jfs_readlink,
-	follow_link:	jfs_follow_link,
-};
-
 static int jfs_follow_link(struct dentry *dentry, struct nameidata *nd)
 {
 	char *s = JFS_IP(dentry->d_inode)->i_inline;
@@ -41,3 +30,9 @@ static int jfs_readlink(struct dentry *dentry, char *buffer, int buflen)
 	char *s = JFS_IP(dentry->d_inode)->i_inline;
 	return vfs_readlink(dentry, buffer, buflen, s);
 }
+
+struct inode_operations jfs_symlink_inode_operations = {
+	.readlink	= jfs_readlink,
+	.follow_link	= jfs_follow_link,
+};
+