[XFS] merge over some lost changes from the XFS tree

fs/xfs/linux/xfs_aops.c

@@ -163,7 +163,7 @@ map_buffer_at_offset(
 	delta -= mp->pbm_offset;
 	delta >>= block_bits;
 
-	sector_shift = block_bits - 9;
+	sector_shift = block_bits - BBSHIFT;
 	bn = mp->pbm_bn >> sector_shift;
 	bn += delta;
 	ASSERT((bn << sector_shift) >= mp->pbm_bn);
@@ -285,7 +285,7 @@ probe_unmapped_cluster(
 		total += bh->b_size;
 	} while ((bh = bh->b_this_page) != head);
 
-	/* if we reached the end of the page, sum forwards in
+	/* If we reached the end of the page, sum forwards in
 	 * following pages.
 	 */
 	if (bh == head) {
@@ -735,8 +735,8 @@ page_state_convert(
 					page_dirty = 0;
 				}
 			} else if (startio) {
-				if (buffer_uptodate(bh)) {
-					lock_buffer(bh);
+				if (buffer_uptodate(bh) &&
+				    !test_and_set_bit(BH_Lock, &bh->b_state)) {
 					bh_arr[cnt++] = bh;
 					page_dirty = 0;
 				}
@@ -759,8 +759,7 @@ page_state_convert(
 	}
 
 	if (mp) {
-		cluster_write(inode, page->index + 1, mp,
-				startio, unmapped);
+		cluster_write(inode, page->index + 1, mp, startio, unmapped);
 	}
 
 	return page_dirty;
@@ -812,8 +811,7 @@ linvfs_get_block_core(
 		size = 1 << inode->i_blkbits;
 
 	VOP_BMAP(vp, offset, size,
-		create ? flags : PBF_READ,
-		(struct page_buf_bmap_s *)&pbmap, &retpbbm, error);
+		create ? flags : PBF_READ, &pbmap, &retpbbm, error);
 	if (error)
 		return -error;
 
@@ -831,7 +829,7 @@ linvfs_get_block_core(
 			delta = offset - pbmap.pbm_offset;
 			delta >>= inode->i_blkbits;
 
-			bn = pbmap.pbm_bn >> (inode->i_blkbits - 9);
+			bn = pbmap.pbm_bn >> (inode->i_blkbits - BBSHIFT);
 			bn += delta;
 
 			bh_result->b_blocknr = bn;

fs/xfs/linux/xfs_file.c

 /*
- * Copyright (c) 2000-2002 Silicon Graphics, Inc.  All Rights Reserved.
+ * Copyright (c) 2000-2003 Silicon Graphics, Inc.  All Rights Reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of version 2 of the GNU General Public License as
@@ -136,6 +136,7 @@ linvfs_aio_write(
 	return linvfs_writev(iocb->ki_filp, &iov, 1, &iocb->ki_pos);
 }
 
+
 STATIC ssize_t
 linvfs_sendfile(
 	struct file		*filp,
@@ -199,9 +200,7 @@ linvfs_fsync(
 		flags |= FSYNC_DATA;
 
 	ASSERT(vp);
-
 	VOP_FSYNC(vp, flags, NULL, (xfs_off_t)0, (xfs_off_t)-1, error);
-
 	return -error;
 }
 
@@ -288,6 +287,7 @@ linvfs_readdir(
 	return -error;
 }
 
+
 STATIC int
 linvfs_file_mmap(
 	struct file	*filp,

fs/xfs/linux/xfs_ioctl.c

@@ -39,11 +39,6 @@
 #include <linux/pagemap.h>
 
 
-extern int xfs_change_file_space(bhv_desc_t *, int,
-			xfs_flock64_t *, xfs_off_t, cred_t *, int);
-extern int xfs_set_dmattrs(bhv_desc_t *, u_int, u_int16_t, cred_t *);
-
-
 /*
  * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to
  * a file or fs handle.

fs/xfs/linux/xfs_lrw.c

 /*
- * Copyright (c) 2000-2002 Silicon Graphics, Inc.  All Rights Reserved.
+ * Copyright (c) 2000-2003 Silicon Graphics, Inc.  All Rights Reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of version 2 of the GNU General Public License as

fs/xfs/linux/xfs_lrw.h

 /*
- * Copyright (c) 2000-2002 Silicon Graphics, Inc.  All Rights Reserved.
+ * Copyright (c) 2000-2003 Silicon Graphics, Inc.  All Rights Reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of version 2 of the GNU General Public License as

fs/xfs/support/atomic.h

-/*
- * Copyright (c) 2000-2003 Silicon Graphics, Inc.  All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like.	 Any license provided herein, whether implied or
- * otherwise, applies only to this software file.  Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA  94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
- */
-#ifndef __XFS_SUPPORT_ATOMIC_H__
-#define __XFS_SUPPORT_ATOMIC_H__
-
-#include <linux/version.h>
-#include <linux/time.h>
-#include <linux/wait.h>
-#include <linux/sched.h>
-#include <asm/atomic.h>
-#include <asm/semaphore.h>
-
-/*
- * This is used for two variables in XFS, one of which is a debug trace
- * buffer index. They are not accessed via any other atomic operations
- * so this is safe. All other atomic increments and decrements in XFS
- * now use the Linux built-in functions.
- */
-
-extern spinlock_t xfs_atomic_spin;
-
-static __inline__ int atomicIncWithWrap(int *ip, int val)
-{
-	unsigned long flags;
-	int ret;
-	spin_lock_irqsave(&xfs_atomic_spin, flags);
-	ret = *ip;
-	(*ip)++;
-	if (*ip == val) *ip = 0;
-	spin_unlock_irqrestore(&xfs_atomic_spin, flags);
-	return ret;
-}
-
-#endif /* __XFS_SUPPORT_ATOMIC_H__ */

fs/xfs/xfs_dmapi.h

@@ -186,7 +186,7 @@ typedef enum {
 
 extern struct bhv_vfsops xfs_dmops;
 
-extern void xfs_dm_init(void);
-extern void xfs_dm_exit(void);
+extern int dmapi_init(void);
+extern void dmapi_uninit(void);
 
 #endif	/* __XFS_DMAPI_H__ */

fs/xfs/xfs_iget.c

 /*
- * Copyright (c) 2000-2002 Silicon Graphics, Inc.  All Rights Reserved.
+ * Copyright (c) 2000-2003 Silicon Graphics, Inc.  All Rights Reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of version 2 of the GNU General Public License as

fs/xfs/xfs_rw.h

@@ -153,24 +153,9 @@ int
 xfs_bioerror(
 	struct xfs_buf		*b);
 
-/*
- * XFS I/O core functions
- */
-extern int xfs_bioerror_relse(struct xfs_buf *);
-
-
-/*
- * Needed by xfs_rw.c
- */
 int
-xfs_rwlock(
-	bhv_desc_t	*bdp,
-	vrwlock_t	write_lock);
-
-void
-xfs_rwunlock(
-	bhv_desc_t	*bdp,
-	vrwlock_t	write_lock);
+xfs_bioerror_relse(
+	struct xfs_buf		*b);
 
 int
 xfs_read_buf(
@@ -188,4 +173,35 @@ xfs_ioerror_alert(
 	xfs_buf_t		*bp,
 	xfs_daddr_t		blkno);
 
+
+/*
+ * Prototypes for functions in xfs_vnodeops.c.
+ */
+
+int
+xfs_rwlock(
+	bhv_desc_t		*bdp,
+	vrwlock_t		write_lock);
+
+void
+xfs_rwunlock(
+	bhv_desc_t		*bdp,
+	vrwlock_t		write_lock);
+
+int
+xfs_change_file_space(
+	bhv_desc_t		*bdp,
+	int			cmd,
+	xfs_flock64_t		*bf,
+	xfs_off_t		offset,
+	cred_t			*credp,
+	int			flags);
+
+int
+xfs_set_dmattrs(
+	bhv_desc_t		*bdp,
+	u_int			evmask,
+	u_int16_t		state,
+	cred_t			*credp);
+
 #endif /* __XFS_RW_H__ */