JFS: merge direct inode removal with 2.5.33 changes

fs/jfs/file.c

@@ -24,9 +24,6 @@
 #include "jfs_debug.h"
 
 
-extern int generic_file_open(struct inode *, struct file *);
-extern loff_t generic_file_llseek(struct file *, loff_t, int origin);
-
 extern int jfs_commit_inode(struct inode *, int);
 
 int jfs_fsync(struct file *file, struct dentry *dentry, int datasync)
@@ -114,11 +111,3 @@ struct file_operations jfs_file_operations = {
  	.sendfile	= generic_file_sendfile,
 	.fsync		= jfs_fsync,
 };
-
-struct inode_operations jfs_special_inode_operations = {
-	.setxattr	= jfs_setxattr,
-	.getxattr	= jfs_getxattr,
-	.listxattr	= jfs_listxattr,
-	.removexattr	= jfs_removexattr,
-};
-

fs/jfs/inode.c

@@ -31,7 +31,6 @@
 extern struct inode_operations jfs_dir_inode_operations;
 extern struct inode_operations jfs_file_inode_operations;
 extern struct inode_operations jfs_symlink_inode_operations;
-extern struct inode_operations jfs_special_inode_operations;
 extern struct file_operations jfs_dir_operations;
 extern struct file_operations jfs_file_operations;
 struct address_space_operations jfs_aops;
@@ -66,7 +65,7 @@ struct inode *jfs_iget(struct super_block *sb, ino_t ino)
 		} else
 			inode->i_op = &jfs_symlink_inode_operations;
 	} else {
-		inode->i_op = &jfs_special_inode_operations;
+		inode->i_op = &jfs_file_inode_operations;
 		init_special_inode(inode, inode->i_mode,
 				   kdev_t_to_nr(inode->i_rdev));
 	}

fs/jfs/jfs_dtree.c

@@ -101,7 +101,6 @@
  */
 
 #include <linux/fs.h>
-#include <linux/smp_lock.h>
 #include "jfs_incore.h"
 #include "jfs_superblock.h"
 #include "jfs_filsys.h"

fs/jfs/jfs_extendfs.h

-/*
- *   Copyright (c) International Business Machines Corp., 2000-2001
- *
- *   This program is free software;  you can redistribute it and/or modify
- *   it under the terms of the GNU General Public License as published by
- *   the Free Software Foundation; either version 2 of the License, or 
- *   (at your option) any later version.
- * 
- *   This program is distributed in the hope that it will be useful,
- *   but WITHOUT ANY WARRANTY;  without even the implied warranty of
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
- *   the GNU General Public License for more details.
- *
- *   You should have received a copy of the GNU General Public License
- *   along with this program;  if not, write to the Free Software 
- *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#ifndef	_H_JFS_EXTENDFS
-#define _H_JFS_EXTENDFS
-
-/*
- *	extendfs parameter list
- */
-typedef struct {
-	u32 flag;		/* 4: */
-	u8 dev;			/* 1: */
-	u8 pad[3];		/* 3: */
-	s64 LVSize;		/* 8: LV size in LV block */
-	s64 FSSize;		/* 8: FS size in LV block */
-	s32 LogSize;		/* 4: inlinelog size in LV block */
-} extendfs_t;			/* (28) */
-
-/* plist flag */
-#define EXTENDFS_QUERY		0x00000001
-
-#endif				/* _H_JFS_EXTENDFS */

fs/jfs/jfs_extent.c

@@ -26,8 +26,9 @@
  * forward references
  */
 static int extBalloc(struct inode *, s64, s64 *, s64 *);
+#ifdef _NOTYET
 static int extBrealloc(struct inode *, s64, s64, s64 *, s64 *);
-int extRecord(struct inode *, xad_t *);
+#endif
 static s64 extRoundDown(s64 nb);
 
 /*
@@ -191,6 +192,7 @@ extAlloc(struct inode *ip, s64 xlen, s64 pno, xad_t * xp, boolean_t abnr)
 }
 
 
+#ifdef _NOTYET
 /*
  * NAME:        extRealloc()
  *
@@ -408,6 +410,7 @@ int extHint(struct inode *ip, s64 offset, xad_t * xp)
 
 	return (0);
 }
+#endif			/* _NOTYET */
 
 
 /*
@@ -440,6 +443,7 @@ int extRecord(struct inode *ip, xad_t * xp)
 }
 
 
+#ifdef _NOTYET
 /*
  * NAME:        extFill()
  *
@@ -473,6 +477,7 @@ int extFill(struct inode *ip, xad_t * xp)
 
 	return (0);
 }
+#endif			/* _NOTYET */
 
 
 /*
@@ -548,6 +553,7 @@ extBalloc(struct inode *ip, s64 hint, s64 * nblocks, s64 * blkno)
 }
 
 
+#ifdef _NOTYET
 /*
  * NAME:	extBrealloc()
  *
@@ -601,6 +607,7 @@ extBrealloc(struct inode *ip,
 	 */
 	return (extBalloc(ip, blkno, newnblks, newblkno));
 }
+#endif			/* _NOTYET */
 
 
 /*

fs/jfs/jfs_imap.c

@@ -42,6 +42,8 @@
  */
 
 #include <linux/fs.h>
+#include <linux/buffer_head.h>
+
 #include "jfs_incore.h"
 #include "jfs_filsys.h"
 #include "jfs_dinode.h"
@@ -1175,7 +1177,7 @@ int diFree(struct inode *ip)
 	 * invalidate any page of the inode extent freed from buffer cache;
 	 */
 	freepxd = iagp->inoext[extno];
-	invalidate_pxd_metapages(JFS_SBI(ip->i_sb)->direct_inode, freepxd);
+	invalidate_pxd_metapages(ip->i_sb->s_bdev->bd_inode, freepxd);
 
 	/*
 	 *      update iag list(s) (careful update step 2)
@@ -2963,26 +2965,30 @@ printf("diExtendFS: iag:%d agstart:%Ld agno:%d\n", i, agstart, n);
  *
  * note: shadow page with regular inode (rel.2);
  */
-static void
-duplicateIXtree(struct super_block *sb, s64 blkno, int xlen, s64 * xaddr)
+static void duplicateIXtree(struct super_block *sb, s64 blkno,
+			    int xlen, s64 *xaddr)
 {
-	int rc;
-	tid_t tid;
-	struct inode *ip;
-	metapage_t *mpsuper;
 	struct jfs_superblock *j_sb;
+	struct buffer_head *bh;
+	struct inode *ip;
+	tid_t tid;
+	int rc;
 
 	/* if AIT2 ipmap2 is bad, do not try to update it */
 	if (JFS_SBI(sb)->mntflag & JFS_BAD_SAIT)	/* s_flag */
 		return;
 	ip = diReadSpecial(sb, FILESYSTEM_I, 1);
-	if (ip == 0) {
+	if (ip == NULL) {
 		JFS_SBI(sb)->mntflag |= JFS_BAD_SAIT;
-		if ((rc = readSuper(sb, &mpsuper)))
+		if ((rc = readSuper(sb, &bh)))
 			return;
-		j_sb = (struct jfs_superblock *) (mpsuper->data);
+		j_sb = (struct jfs_superblock *)bh->b_data;
 		j_sb->s_flag |= JFS_BAD_SAIT;
-		write_metapage(mpsuper);
+
+		mark_buffer_dirty(bh);
+		ll_rw_block(WRITE, 1, &bh);
+		wait_on_buffer(bh);
+		brelse(bh);
 		return;
 	}
 

fs/jfs/jfs_incore.h

@@ -152,8 +152,6 @@ struct jfs_sb_info {
         /* Formerly in ipbmap */
 	struct bmap	*bmap;		/* 4: incore bmap descriptor	*/
 	struct nls_table *nls_tab;	/* 4: current codepage		*/
-	struct inode	*direct_inode;	/* 4: inode for physical I/O	*/
-	struct address_space *direct_mapping; /* 4: mapping for physical I/O */
 	uint		state;		/* 4: mount/recovery state	*/
 };
 

fs/jfs/jfs_logmgr.c

@@ -960,17 +960,19 @@ int lmLogSync(log_t * log, int nosyncwait)
 	 * reset syncpt = sync
 	 */
 	if (log->sync != log->syncpt) {
-		struct jfs_sb_info	*sbi = JFS_SBI(log->sb);
+		struct super_block *sb = log->sb;
+		struct jfs_sb_info *sbi = JFS_SBI(sb);
+
 		/*
 		 * We need to make sure all of the "written" metapages
 		 * actually make it to disk
 		 */
 		filemap_fdatawrite(sbi->ipbmap->i_mapping);
 		filemap_fdatawrite(sbi->ipimap->i_mapping);
-		filemap_fdatawrite(sbi->direct_inode->i_mapping);
+		filemap_fdatawrite(sb->s_bdev->bd_inode->i_mapping);
 		filemap_fdatawait(sbi->ipbmap->i_mapping);
 		filemap_fdatawait(sbi->ipimap->i_mapping);
-		filemap_fdatawait(sbi->direct_inode->i_mapping);
+		filemap_fdatawait(sb->s_bdev->bd_inode->i_mapping);
 
 		lrd.logtid = 0;
 		lrd.backchain = 0;
@@ -1985,6 +1987,7 @@ static void lbmIODone(struct bio *bio)
 
 		jERROR(1, ("lbmIODone: I/O error in JFS log\n"));
 	}
+
 	bio_put(bio);
 
 	/*
@@ -2102,7 +2105,6 @@ static void lbmIODone(struct bio *bio)
 
 		LCACHE_UNLOCK(flags);	/* unlock+enable */
 	}
-	return;
 }
 
 int jfsIOWait(void *arg)

fs/jfs/jfs_metapage.c

@@ -27,16 +27,13 @@
 #include "jfs_txnmgr.h"
 #include "jfs_debug.h"
 
-extern struct task_struct *jfsCommitTask;
 static spinlock_t meta_lock = SPIN_LOCK_UNLOCKED;
-static wait_queue_head_t meta_wait;
 
 #ifdef CONFIG_JFS_STATISTICS
 struct {
 	uint	pagealloc;	/* # of page allocations */
 	uint	pagefree;	/* # of page frees */
 	uint	lockwait;	/* # of sleeping lock_metapage() calls */
-	uint	allocwait;	/* # of sleeping alloc_metapage() calls */
 } mpStat;
 #endif
 
@@ -134,11 +131,6 @@ static void mp_mempool_free(void *element, void *pool_data)
 
 int __init metapage_init(void)
 {
-	/*
-	 * Initialize wait queue
-	 */
-	init_waitqueue_head(&meta_wait);
-
 	/*
 	 * Allocate the metapage structures
 	 */
@@ -225,51 +217,6 @@ static void remove_from_hash(metapage_t * mp, metapage_t ** hash_ptr)
 		mp->hash_next->hash_prev = mp->hash_prev;
 }
 
-/*
- * Direct address space operations
- */
-
-static int direct_get_block(struct inode *ip, sector_t lblock,
-			    struct buffer_head *bh_result, int create)
-{
-	if (create)
-		set_buffer_new(bh_result);
-
-	map_bh(bh_result, ip->i_sb, lblock);
-
-	return 0;
-}
-
-static int direct_writepage(struct page *page)
-{
-	return block_write_full_page(page, direct_get_block);
-}
-
-static int direct_readpage(struct file *fp, struct page *page)
-{
-	return block_read_full_page(page, direct_get_block);
-}
-
-static int direct_prepare_write(struct file *file, struct page *page,
-				unsigned from, unsigned to)
-{
-	return block_prepare_write(page, from, to, direct_get_block);
-}
-
-static int direct_bmap(struct address_space *mapping, long block)
-{
-	return generic_block_bmap(mapping, block, direct_get_block);
-}
-
-struct address_space_operations direct_aops = {
-	.readpage	= direct_readpage,
-	.writepage	= direct_writepage,
-	.sync_page	= block_sync_page,
-	.prepare_write	= direct_prepare_write,
-	.commit_write	= generic_commit_write,
-	.bmap		= direct_bmap,
-};
-
 metapage_t *__get_metapage(struct inode *inode,
 			   unsigned long lblock, unsigned int size,
 			   int absolute, unsigned long new)
@@ -286,14 +233,12 @@ metapage_t *__get_metapage(struct inode *inode,
 		 inode, lblock));
 
 	if (absolute)
-		mapping = JFS_SBI(inode->i_sb)->direct_mapping;
+		mapping = inode->i_sb->s_bdev->bd_inode->i_mapping;
 	else
 		mapping = inode->i_mapping;
 
 	spin_lock(&meta_lock);
-
 	hash_ptr = meta_hash(mapping, lblock);
-
 	mp = search_hash(hash_ptr, mapping, lblock);
 	if (mp) {
 	      page_found:
@@ -309,7 +254,7 @@ metapage_t *__get_metapage(struct inode *inode,
 		lock_metapage(mp);
 		spin_unlock(&meta_lock);
 	} else {
-		l2bsize = inode->i_sb->s_blocksize_bits;
+		l2bsize = inode->i_blkbits;
 		l2BlocksPerPage = PAGE_CACHE_SHIFT - l2bsize;
 		page_index = lblock >> l2BlocksPerPage;
 		page_offset = (lblock - (page_index << l2BlocksPerPage)) <<
@@ -431,12 +376,11 @@ void hold_metapage(metapage_t * mp, int force)
 
 static void __write_metapage(metapage_t * mp)
 {
-	struct inode *ip = (struct inode *) mp->mapping->host;
+	int l2bsize = mp->mapping->host->i_blkbits;
+	int l2BlocksPerPage = PAGE_CACHE_SHIFT - l2bsize;
 	unsigned long page_index;
 	unsigned long page_offset;
 	int rc;
-	int l2bsize = ip->i_sb->s_blocksize_bits;
-	int l2BlocksPerPage = PAGE_CACHE_SHIFT - l2bsize;
 
 	jFYI(1, ("__write_metapage: mp = 0x%p\n", mp));
 
@@ -561,7 +505,7 @@ void __invalidate_metapages(struct inode *ip, s64 addr, int len)
 {
 	metapage_t **hash_ptr;
 	unsigned long lblock;
-	int l2BlocksPerPage = PAGE_CACHE_SHIFT - ip->i_sb->s_blocksize_bits;
+	int l2BlocksPerPage = PAGE_CACHE_SHIFT - ip->i_blkbits;
 	struct address_space *mapping = ip->i_mapping;
 	metapage_t *mp;
 	struct page *page;
@@ -624,12 +568,10 @@ int jfs_mpstat_read(char *buffer, char **start, off_t offset, int length,
 		       "=======================\n"
 		       "page allocations = %d\n"
 		       "page frees = %d\n"
-		       "lock waits = %d\n"
-		       "allocation waits = %d\n",
+		       "lock waits = %d\n",
 		       mpStat.pagealloc,
 		       mpStat.pagefree,
-		       mpStat.lockwait,
-		       mpStat.allocwait);
+		       mpStat.lockwait);
 
 	begin = offset;
 	*start = buffer + begin;

fs/jfs/jfs_metapage.h

@@ -57,11 +57,6 @@ typedef struct metapage {
 	struct jfs_log *log;
 } metapage_t;
 
-/*
- * Direct-access address space operations
- */
-extern struct address_space_operations direct_aops;
-
 /* metapage flag */
 #define META_locked	0
 #define META_absolute	1

fs/jfs/jfs_mount.c

@@ -48,6 +48,8 @@
  */
 
 #include <linux/fs.h>
+#include <linux/buffer_head.h>
+
 #include "jfs_incore.h"
 #include "jfs_filsys.h"
 #include "jfs_superblock.h"
@@ -314,18 +316,18 @@ int jfs_mount_rw(struct super_block *sb, int remount)
 static int chkSuper(struct super_block *sb)
 {
 	int rc = 0;
-	metapage_t *mp;
 	struct jfs_sb_info *sbi = JFS_SBI(sb);
 	struct jfs_superblock *j_sb;
+	struct buffer_head *bh;
 	int AIM_bytesize, AIT_bytesize;
 	int expected_AIM_bytesize, expected_AIT_bytesize;
 	s64 AIM_byte_addr, AIT_byte_addr, fsckwsp_addr;
 	s64 byte_addr_diff0, byte_addr_diff1;
 	s32 bsize;
 
-	if ((rc = readSuper(sb, &mp)))
+	if ((rc = readSuper(sb, &bh)))
 		return rc;
-	j_sb = (struct jfs_superblock *) (mp->data);
+	j_sb = (struct jfs_superblock *)bh->b_data;
 
 	/*
 	 * validate superblock
@@ -414,8 +416,7 @@ static int chkSuper(struct super_block *sb)
 	sbi->ait2 = j_sb->s_ait2;
 
       out:
-	release_metapage(mp);
-
+	brelse(bh);
 	return rc;
 }
 
@@ -429,7 +430,7 @@ int updateSuper(struct super_block *sb, uint state)
 {
 	struct jfs_superblock *j_sb;
 	struct jfs_sb_info *sbi = JFS_SBI(sb);
-	metapage_t *mp;
+	struct buffer_head *bh;
 	int rc;
 
 	/*
@@ -438,10 +439,10 @@ int updateSuper(struct super_block *sb, uint state)
 	if (sbi->state == FM_DIRTY)
 		return 0;
 
-	if ((rc = readSuper(sb, &mp)))
+	if ((rc = readSuper(sb, &bh)))
 		return rc;
 
-	j_sb = (struct jfs_superblock *) (mp->data);
+	j_sb = (struct jfs_superblock *)bh->b_data;
 
 	j_sb->s_state = cpu_to_le32(state);
 	sbi->state = state;
@@ -459,7 +460,10 @@ int updateSuper(struct super_block *sb, uint state)
 			j_sb->s_flag |= cpu_to_le32(JFS_DASD_PRIME);
 	}
 
-	flush_metapage(mp);
+	mark_buffer_dirty(bh);
+	ll_rw_block(WRITE, 1, &bh);
+	wait_on_buffer(bh);
+	brelse(bh);
 
 	return 0;
 }
@@ -470,18 +474,19 @@ int updateSuper(struct super_block *sb, uint state)
  *
  * read superblock by raw sector address
  */
-int readSuper(struct super_block *sb, metapage_t ** mpp)
+int readSuper(struct super_block *sb, struct buffer_head **bpp)
 {
 	/* read in primary superblock */
-	*mpp = read_metapage(JFS_SBI(sb)->direct_inode,
-			     SUPER1_OFF >> sb->s_blocksize_bits, PSIZE, 1);
-	if (*mpp == NULL) {
+	*bpp = sb_bread(sb, SUPER1_OFF >> sb->s_blocksize_bits);
+	if (bpp)
+		return 0;
+
 	/* read in secondary/replicated superblock */
-		*mpp = read_metapage(JFS_SBI(sb)->direct_inode,
-				     SUPER2_OFF >> sb->s_blocksize_bits,
-				     PSIZE, 1);
-	}
-	return *mpp ? 0 : 1;
+	*bpp = sb_bread(sb, SUPER2_OFF >> sb->s_blocksize_bits);
+	if (bpp)
+		return 0;
+
+	return -EIO;
 }
 
 

fs/jfs/jfs_superblock.h

@@ -106,7 +106,7 @@ struct jfs_superblock {
 
 };
 
-extern int readSuper(struct super_block *, struct metapage **);
+extern int readSuper(struct super_block *, struct buffer_head **);
 extern int updateSuper(struct super_block *, uint);
 
 #endif /*_H_JFS_SUPERBLOCK */

fs/jfs/jfs_txnmgr.c

@@ -144,7 +144,6 @@ struct {
  */
 extern int lmGroupCommit(log_t * log, tblock_t * tblk);
 extern void lmSync(log_t *);
-extern int readSuper(struct super_block *sb, metapage_t ** bpp);
 extern int jfs_commit_inode(struct inode *, int);
 extern int jfs_stop_threads;
 

fs/jfs/jfs_umount.c

@@ -49,13 +49,14 @@
  */
 int jfs_umount(struct super_block *sb)
 {
-	int rc = 0;
-	log_t *log;
+	struct address_space *bdev_mapping = sb->s_bdev->bd_inode->i_mapping;
 	struct jfs_sb_info *sbi = JFS_SBI(sb);
 	struct inode *ipbmap = sbi->ipbmap;
 	struct inode *ipimap = sbi->ipimap;
 	struct inode *ipaimap = sbi->ipaimap;
 	struct inode *ipaimap2 = sbi->ipaimap2;
+	log_t *log;
+	int rc = 0;
 
 	jFYI(1, ("\n	UnMount JFS: sb:0x%p\n", sb));
 
@@ -140,6 +141,7 @@ int jfs_umount(struct super_block *sb)
 
 int jfs_umount_rw(struct super_block *sb)
 {
+	struct address_space *bdev_mapping = sb->s_bdev->bd_inode->i_mapping;
 	struct jfs_sb_info *sbi = JFS_SBI(sb);
 	log_t *log = sbi->log;
 
@@ -158,8 +160,14 @@ int jfs_umount_rw(struct super_block *sb)
 	 */
 	dbSync(sbi->ipbmap);
 	diSync(sbi->ipimap);
-	filemap_fdatawrite(sbi->direct_inode->i_mapping);
-	filemap_fdatawait(sbi->direct_inode->i_mapping);
+
+	/*
+	 * Note that we have to do this even if sync_blockdev() will
+	 * do exactly the same a few instructions later:  We can't
+	 * mark the superblock clean before everything is flushed to
+	 * disk.
+	 */
+	filemap_fdatawrite(bdev_mapping);
 
 	updateSuper(sb, FM_CLEAN);
 	sbi->log = NULL;

fs/jfs/namei.c

@@ -29,7 +29,6 @@
 
 extern struct inode_operations jfs_file_inode_operations;
 extern struct inode_operations jfs_symlink_inode_operations;
-extern struct inode_operations jfs_special_inode_operations;
 extern struct file_operations jfs_file_operations;
 extern struct address_space_operations jfs_aops;
 
@@ -1338,7 +1337,7 @@ int jfs_mknod(struct inode *dir, struct dentry *dentry, int mode, int rdev)
 	if ((rc = dtInsert(tid, dir, &dname, &ino, &btstack)))
 		goto out3;
 
-	ip->i_op = &jfs_special_inode_operations;
+	ip->i_op = &jfs_file_inode_operations;
 	init_special_inode(ip, ip->i_mode, rdev);
 
 	insert_inode_hash(ip);

fs/jfs/resize.c

@@ -79,9 +79,8 @@ int jfs_extendfs(struct super_block *sb, s64 newLVSize, int newLogSize)
 	int log_formatted = 0;
 	struct inode *iplist[1];
 	struct jfs_superblock *j_sb, *j_sb2;
-	metapage_t *sbp, *sb2p;
 	uint old_agsize;
-	struct buffer_head *bh;
+	struct buffer_head *bh, *bh2;
 
 	/* If the volume hasn't grown, get out now */
 
@@ -230,9 +229,9 @@ int jfs_extendfs(struct super_block *sb, s64 newLVSize, int newLogSize)
 		 */
 
 		/* read in superblock */
-		if ((rc = readSuper(sb, &sbp)))
+		if ((rc = readSuper(sb, &bh)))
 			goto error_out;
-		j_sb = (struct jfs_superblock *) (sbp->data);
+		j_sb = (struct jfs_superblock *)bh->b_data;
 
 		/* mark extendfs() in progress */
 		j_sb->s_state |= cpu_to_le32(FM_EXTENDFS);
@@ -243,7 +242,10 @@ int jfs_extendfs(struct super_block *sb, s64 newLVSize, int newLogSize)
 		PXDlength(&j_sb->s_xlogpxd, newLogSize);
 
 		/* synchronously update superblock */
-		flush_metapage(sbp);
+		mark_buffer_dirty(bh);
+		ll_rw_block(WRITE, 1, &bh);
+		wait_on_buffer(bh);
+		brelse(bh);
 
 		/*
 		 * format new inline log synchronously;
@@ -474,12 +476,13 @@ int jfs_extendfs(struct super_block *sb, s64 newLVSize, int newLogSize)
 
 	diWriteSpecial(ipbmap2, 1);
 	diFreeSpecial(ipbmap2);
+
 	/*
 	 *      update superblock
 	 */
-	if ((rc = readSuper(sb, &sbp)))
+	if ((rc = readSuper(sb, &bh)))
 		goto error_out;
-	j_sb = (struct jfs_superblock *) (sbp->data);
+	j_sb = (struct jfs_superblock *)bh->b_data;
 
 	/* mark extendfs() completion */
 	j_sb->s_state &= cpu_to_le32(~FM_EXTENDFS);
@@ -503,17 +506,22 @@ int jfs_extendfs(struct super_block *sb, s64 newLVSize, int newLogSize)
 	/* sb->s_fsckloglen remains the same */
 
 	/* Update secondary superblock */
-	sb2p = read_metapage(sbi->direct_inode,
-			     SUPER2_OFF >> sb->s_blocksize_bits, PSIZE, 1);
-
-	if (sb2p) {
-		j_sb2 = (struct jfs_superblock *) (sb2p->data);
+	bh2 = sb_bread(sb, SUPER2_OFF >> sb->s_blocksize_bits);
+	if (bh2) {
+		j_sb2 = (struct jfs_superblock *)bh2->b_data;
 		memcpy(j_sb2, j_sb, sizeof (struct jfs_superblock));
-		flush_metapage(sb2p);
+
+		mark_buffer_dirty(bh);
+		ll_rw_block(WRITE, 1, &bh2);
+		wait_on_buffer(bh2);
+		brelse(bh);
 	}
 
 	/* write primary superblock */
-	flush_metapage(sbp);
+	mark_buffer_dirty(bh);
+	ll_rw_block(WRITE, 1, &bh);
+	wait_on_buffer(bh);
+	brelse(bh);
 
 	goto resume;
 

fs/jfs/super.c

@@ -142,17 +142,6 @@ static void jfs_put_super(struct super_block *sb)
 	unload_nls(sbi->nls_tab);
 	sbi->nls_tab = NULL;
 
-	/*
-	 * We need to clean out the direct_inode pages since this inode
-	 * is not in the inode hash.
-	 */
-	filemap_fdatawrite(sbi->direct_inode->i_mapping);
-	filemap_fdatawait(sbi->direct_inode->i_mapping);
-	truncate_inode_pages(sbi->direct_mapping, 0);
-	iput(sbi->direct_inode);
-	sbi->direct_inode = NULL;
-	sbi->direct_mapping = NULL;
-
 	kfree(sbi);
 }
 
@@ -221,7 +210,6 @@ static int parse_options(char *options, struct super_block *sb, s64 *newLVSize)
 
 int jfs_remount(struct super_block *sb, int *flags, char *data)
 {
-	struct jfs_sb_info *sbi = JFS_SBI(sb);
 	s64 newLVSize = 0;
 	int rc = 0;
 
@@ -239,15 +227,9 @@ int jfs_remount(struct super_block *sb, int *flags, char *data)
 			return rc;
 	}
 
-	if ((sb->s_flags & MS_RDONLY) && !(*flags & MS_RDONLY)) {
-		/*
-		 * Invalidate any previously read metadata.  fsck may
-		 * have changed the on-disk data since we mounted r/o
-		 */
-		truncate_inode_pages(sbi->direct_mapping, 0);
-
+	if ((sb->s_flags & MS_RDONLY) && !(*flags & MS_RDONLY))
 		return jfs_mount_rw(sb, 1);
-	} else if ((!(sb->s_flags & MS_RDONLY)) && (*flags & MS_RDONLY))
+	else if ((!(sb->s_flags & MS_RDONLY)) && (*flags & MS_RDONLY))
 		return jfs_umount_rw(sb);
 
 	return 0;
@@ -289,28 +271,13 @@ static int jfs_fill_super(struct super_block *sb, void *data, int silent)
 	sb->s_op = &jfs_super_operations;
 	sb->s_export_op = &jfs_export_operations;
 
-	/*
-	 * Initialize direct-mapping inode/address-space
-	 */
-	inode = new_inode(sb);
-	if (inode == NULL)
-		goto out_kfree;
-	inode->i_ino = 0;
-	inode->i_nlink = 1;
-	inode->i_size = 0x0000010000000000LL;
-	inode->i_mapping->a_ops = &direct_aops;
-	inode->i_mapping->gfp_mask = GFP_NOFS;
-
-	sbi->direct_inode = inode;
-	sbi->direct_mapping = inode->i_mapping;
-
 	rc = jfs_mount(sb);
 	if (rc) {
 		if (!silent) {
 			jERROR(1,
 			       ("jfs_mount failed w/return code = %d\n", rc));
 		}
-		goto out_mount_failed;
+		goto out_kfree;
 	}
 	if (sb->s_flags & MS_RDONLY)
 		sbi->log = 0;
@@ -360,14 +327,6 @@ static int jfs_fill_super(struct super_block *sb, void *data, int silent)
 	if (rc) {
 		jERROR(1, ("jfs_umount failed with return code %d\n", rc));
 	}
-out_mount_failed:
-	filemap_fdatawrite(sbi->direct_inode->i_mapping);
-	filemap_fdatawait(sbi->direct_inode->i_mapping);
-	truncate_inode_pages(sbi->direct_mapping, 0);
-	make_bad_inode(sbi->direct_inode);
-	iput(sbi->direct_inode);
-	sbi->direct_inode = NULL;
-	sbi->direct_mapping = NULL;
 out_kfree:
 	if (sbi->nls_tab)
 		unload_nls(sbi->nls_tab);

fs/jfs/xattr.c

@@ -79,10 +79,10 @@ struct ea_buffer {
 #define EA_MALLOC	0x0008
 
 /* Forward references */
-void ea_release(struct inode *inode, struct ea_buffer *ea_buf);
+static void ea_release(struct inode *inode, struct ea_buffer *ea_buf);
 
 /*
- * NAME: jfs_WriteEAInLine
+ * NAME: ea_write_inline
  *                                                                    
  * FUNCTION: Attempt to write an EA inline if area is available
  *                                                                    
@@ -103,7 +103,7 @@ void ea_release(struct inode *inode, struct ea_buffer *ea_buf);
  *
  * RETURNS: 0 for successful copy to inline area; -1 if area not available
  */
-static int jfs_WriteEAInLine(struct inode *ip, struct jfs_ea_list *ealist,
+static int ea_write_inline(struct inode *ip, struct jfs_ea_list *ealist,
 			   int size, dxd_t * ea)
 {
 	struct jfs_inode_info *ji = JFS_IP(ip);
@@ -144,7 +144,7 @@ static int jfs_WriteEAInLine(struct inode *ip, struct jfs_ea_list *ealist,
 }
 
 /*
- * NAME: jfs_WriteEA
+ * NAME: ea_write
  *                                                                    
  * FUNCTION: Write an EA for an inode
  *                                                                    
@@ -162,7 +162,7 @@ static int jfs_WriteEAInLine(struct inode *ip, struct jfs_ea_list *ealist,
  *
  * RETURNS: 0 for success; Anything else indicates failure
  */
-static int jfs_WriteEA(struct inode *ip, struct jfs_ea_list *ealist, int size,
+static int ea_write(struct inode *ip, struct jfs_ea_list *ealist, int size,
 		       dxd_t * ea)
 {
 	struct super_block *sb = ip->i_sb;
@@ -181,7 +181,7 @@ static int jfs_WriteEA(struct inode *ip, struct jfs_ea_list *ealist, int size,
 	 * and empty EAs are all in-linable, provided the space exists.
 	 */
 	if (!ealist || size <= sizeof (ji->i_inline_ea)) {
-		if (!jfs_WriteEAInLine(ip, ealist, size, ea))
+		if (!ea_write_inline(ip, ealist, size, ea))
 			return 0;
 	}
 
@@ -257,7 +257,7 @@ static int jfs_WriteEA(struct inode *ip, struct jfs_ea_list *ealist, int size,
 }
 
 /*
- * NAME: jfs_ReadEAInLine
+ * NAME: ea_read_inline
  *                                                                    
  * FUNCTION: Read an inlined EA into user's buffer
  *                                                                    
@@ -267,7 +267,7 @@ static int jfs_WriteEA(struct inode *ip, struct jfs_ea_list *ealist, int size,
  *
  * RETURNS: 0
  */
-static int jfs_ReadEAInLine(struct inode *ip, struct jfs_ea_list *ealist)
+static int ea_read_inline(struct inode *ip, struct jfs_ea_list *ealist)
 {
 	struct jfs_inode_info *ji = JFS_IP(ip);
 	int ea_size = sizeDXD(&ji->ea);
@@ -288,7 +288,7 @@ static int jfs_ReadEAInLine(struct inode *ip, struct jfs_ea_list *ealist)
 }
 
 /*
- * NAME: jfs_ReadEA
+ * NAME: ea_read
  *                                                                    
  * FUNCTION: copy EA data into user's buffer
  *                                                                    
@@ -296,11 +296,11 @@ static int jfs_ReadEAInLine(struct inode *ip, struct jfs_ea_list *ealist)
  *	ip	- Inode pointer
  *	ealist	- Pointer to buffer to fill in with EA
  *
- * NOTES:  If EA is inline calls jfs_ReadEAInLine() to copy EA.
+ * NOTES:  If EA is inline calls ea_read_inline() to copy EA.
  *
  * RETURNS: 0 for success; other indicates failure
  */
-static int jfs_ReadEA(struct inode *ip, struct jfs_ea_list *ealist)
+static int ea_read(struct inode *ip, struct jfs_ea_list *ealist)
 {
 	struct super_block *sb = ip->i_sb;
 	struct jfs_inode_info *ji = JFS_IP(ip);
@@ -315,7 +315,7 @@ static int jfs_ReadEA(struct inode *ip, struct jfs_ea_list *ealist)
 
 	/* quick check for in-line EA */
 	if (ji->ea.flag & DXD_INLINE)
-		return jfs_ReadEAInLine(ip, ealist);
+		return ea_read_inline(ip, ealist);
 
 	nbytes = sizeDXD(&ji->ea);
 	assert(nbytes);
@@ -372,7 +372,7 @@ static int jfs_ReadEA(struct inode *ip, struct jfs_ea_list *ealist)
  *
  * RETURNS: 0 for success; Other indicates failure
  */
-int ea_get(struct inode *inode, struct ea_buffer *ea_buf, int min_size)
+static int ea_get(struct inode *inode, struct ea_buffer *ea_buf, int min_size)
 {
 	struct jfs_inode_info *ji = JFS_IP(inode);
 	struct super_block *sb = inode->i_sb;
@@ -436,8 +436,7 @@ int ea_get(struct inode *inode, struct ea_buffer *ea_buf, int min_size)
 		if (ea_size == 0)
 			return 0;
 
-		rc = jfs_ReadEA(inode, ea_buf->xattr);
-		if (rc) {
+		if ((rc = ea_read(inode, ea_buf->xattr))) {
 			kfree(ea_buf->xattr);
 			ea_buf->xattr = NULL;
 			return rc;
@@ -472,8 +471,7 @@ int ea_get(struct inode *inode, struct ea_buffer *ea_buf, int min_size)
 		    ~(sb->s_blocksize - 1);
 		if (ea_size == 0)
 			return 0;
-		rc = jfs_ReadEA(inode, ea_buf->xattr);
-		if (rc) {
+		if ((rc = ea_read(inode, ea_buf->xattr))) {
 			discard_metapage(ea_buf->mp);
 			dbFree(inode, blkno, (s64) blocks_needed);
 			return rc;
@@ -500,7 +498,7 @@ int ea_get(struct inode *inode, struct ea_buffer *ea_buf, int min_size)
 	return ea_size;
 }
 
-void ea_release(struct inode *inode, struct ea_buffer *ea_buf)
+static void ea_release(struct inode *inode, struct ea_buffer *ea_buf)
 {
 	if (ea_buf->flag & EA_MALLOC)
 		kfree(ea_buf->xattr);
@@ -514,7 +512,7 @@ void ea_release(struct inode *inode, struct ea_buffer *ea_buf)
 	}
 }
 
-int ea_put(struct inode *inode, struct ea_buffer *ea_buf, int new_size)
+static int ea_put(struct inode *inode, struct ea_buffer *ea_buf, int new_size)
 {
 	struct jfs_inode_info *ji = JFS_IP(inode);
 	unsigned long old_blocks, new_blocks;
@@ -532,16 +530,14 @@ int ea_put(struct inode *inode, struct ea_buffer *ea_buf, int new_size)
 		DXDaddress(&ea_buf->new_ea, 0);
 		DXDlength(&ea_buf->new_ea, 0);
 	} else if (ea_buf->flag & EA_MALLOC) {
-		rc = jfs_WriteEA(inode, ea_buf->xattr, new_size,
-				 &ea_buf->new_ea);
+		rc = ea_write(inode, ea_buf->xattr, new_size, &ea_buf->new_ea);
 		kfree(ea_buf->xattr);
 	} else if (ea_buf->flag & EA_NEW) {
 		/* We have already allocated a new dxd */
 		flush_metapage(ea_buf->mp);
 	} else {
 		/* ->xattr must point to original ea's metapage */
-		rc = jfs_WriteEA(inode, ea_buf->xattr, new_size,
-				 &ea_buf->new_ea);
+		rc = ea_write(inode, ea_buf->xattr, new_size, &ea_buf->new_ea);
 		discard_metapage(ea_buf->mp);
 	}
 	if (rc)