Merge sgi.com:/source2/linux-2.6 into sgi.com:/source2/xfs-linux-2.6

fs/xfs/linux-2.6/xfs_aops.c

 /*
- * Copyright (c) 2000-2004 Silicon Graphics, Inc.  All Rights Reserved.
+ * Copyright (c) 2000-2005 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
@@ -156,9 +156,7 @@ linvfs_unwritten_convert_direct(
 {
 	ASSERT(!private || inode == (struct inode *)private);
 
-	/* private indicates an unwritten extent lay beneath this IO,
-	 * see linvfs_get_block_core.
-	 */
+	/* private indicates an unwritten extent lay beneath this IO */
 	if (private && size > 0) {
 		vnode_t	*vp = LINVFS_GET_VP(inode);
 		int	error;
@@ -728,11 +726,9 @@ xfs_page_state_convert(
 	pgoff_t                 end_index, last_index, tlast;
 	int			len, err, i, cnt = 0, uptodate = 1;
 	int			flags = startio ? 0 : BMAPI_TRYLOCK;
-	int			page_dirty = 1;
-	int                     delalloc = 0;
-
+	int			page_dirty, delalloc = 0;
 
-	/* Are we off the end of the file ? */
+	/* Is this page beyond the end of the file? */
 	offset = i_size_read(inode);
 	end_index = offset >> PAGE_CACHE_SHIFT;
 	last_index = (offset - 1) >> PAGE_CACHE_SHIFT;
@@ -751,7 +747,13 @@ xfs_page_state_convert(
 	bh = head = page_buffers(page);
 	iomp = NULL;
 
+	/*
+	 * page_dirty is initially a count of buffers on the page and
+	 * is decrememted as we move each into a cleanable state.
+	 */
 	len = bh->b_size;
+	page_dirty = PAGE_CACHE_SIZE / len;
+
 	do {
 		if (offset >= end_offset)
 			break;
@@ -794,7 +796,7 @@ xfs_page_state_convert(
 				}
 				BUG_ON(!buffer_locked(bh));
 				bh_arr[cnt++] = bh;
-				page_dirty = 0;
+				page_dirty--;
 			}
 		/*
 		 * Second case, allocate space for a delalloc buffer.
@@ -821,7 +823,7 @@ xfs_page_state_convert(
 					unlock_buffer(bh);
 					mark_buffer_dirty(bh);
 				}
-				page_dirty = 0;
+				page_dirty--;
 			}
 		} else if ((buffer_uptodate(bh) || PageUptodate(page)) &&
 			   (unmapped || startio)) {
@@ -857,13 +859,13 @@ xfs_page_state_convert(
 						unlock_buffer(bh);
 						mark_buffer_dirty(bh);
 					}
-					page_dirty = 0;
+					page_dirty--;
 				}
 			} else if (startio) {
 				if (buffer_uptodate(bh) &&
 				    !test_and_set_bit(BH_Lock, &bh->b_state)) {
 					bh_arr[cnt++] = bh;
-					page_dirty = 0;
+					page_dirty--;
 				}
 			}
 		}
@@ -907,7 +909,7 @@ xfs_page_state_convert(
 }
 
 STATIC int
-linvfs_get_block_core(
+__linvfs_get_block(
 	struct inode		*inode,
 	sector_t		iblock,
 	unsigned long		blocks,
@@ -977,11 +979,11 @@ linvfs_get_block_core(
 	if (iomap.iomap_flags & IOMAP_DELAY) {
 		BUG_ON(direct);
 		if (create) {
-			set_buffer_mapped(bh_result);
 			set_buffer_uptodate(bh_result);
-		}
+			set_buffer_mapped(bh_result);
 			set_buffer_delay(bh_result);
 		}
+	}
 
 	if (blocks) {
 		bh_result->b_size = (ssize_t)min(
@@ -999,7 +1001,7 @@ linvfs_get_block(
 	struct buffer_head	*bh_result,
 	int			create)
 {
-	return linvfs_get_block_core(inode, iblock, 0, bh_result,
+	return __linvfs_get_block(inode, iblock, 0, bh_result,
 					create, 0, BMAPI_WRITE);
 }
 
@@ -1011,7 +1013,7 @@ linvfs_get_blocks_direct(
 	struct buffer_head	*bh_result,
 	int			create)
 {
-	return linvfs_get_block_core(inode, iblock, max_blocks, bh_result,
+	return __linvfs_get_block(inode, iblock, max_blocks, bh_result,
 					create, 1, BMAPI_WRITE|BMAPI_DIRECT);
 }
 

fs/xfs/linux-2.6/xfs_lrw.c

@@ -676,6 +676,8 @@ xfs_write(
 	if (XFS_FORCED_SHUTDOWN(mp))
 		return -EIO;
 
+	fs_check_frozen(vp->v_vfsp, SB_FREEZE_WRITE);
+
 	if (ioflags & IO_ISDIRECT) {
 		xfs_buftarg_t	*target =
 			(xip->i_d.di_flags & XFS_DIFLAG_REALTIME) ?
@@ -960,10 +962,10 @@ xfs_write(
 				xfs_trans_set_sync(tp);
 				error = xfs_trans_commit(tp, 0, NULL);
 				xfs_iunlock(xip, XFS_ILOCK_EXCL);
+			}
 			if (error)
 				goto out_unlock_internal;
 		}
-		}
 	
 		xfs_rwunlock(bdp, locktype);
 		if (need_isem)

fs/xfs/linux-2.6/xfs_super.c

@@ -348,6 +348,12 @@ linvfs_write_inode(
 		if (sync)
 			flags |= FLUSH_SYNC;
 		VOP_IFLUSH(vp, flags, error);
+		if (error == EAGAIN) {
+			if (sync)
+				VOP_IFLUSH(vp, flags | FLUSH_LOG, error);
+			else
+				error = 0;
+		}
 	}
 
 	return -error;

fs/xfs/xfs_vnodeops.c

@@ -3681,25 +3681,25 @@ xfs_inode_flush(
 {
 	xfs_inode_t	*ip;
 	xfs_mount_t	*mp;
+	xfs_inode_log_item_t *iip;
 	int		error = 0;
 
 	ip = XFS_BHVTOI(bdp);
 	mp = ip->i_mount;
+	iip = ip->i_itemp;
 
 	if (XFS_FORCED_SHUTDOWN(mp))
 		return XFS_ERROR(EIO);
 
-	/* Bypass inodes which have already been cleaned by
+	/*
+	 * Bypass inodes which have already been cleaned by
 	 * the inode flush clustering code inside xfs_iflush
 	 */
 	if ((ip->i_update_core == 0) &&
-	    ((ip->i_itemp == NULL) ||
-	     !(ip->i_itemp->ili_format.ilf_fields & XFS_ILOG_ALL)))
+	    ((iip == NULL) || !(iip->ili_format.ilf_fields & XFS_ILOG_ALL)))
 		return 0;
 
 	if (flags & FLUSH_LOG) {
-		xfs_inode_log_item_t *iip = ip->i_itemp;
-
 		if (iip && iip->ili_last_lsn) {
 			xlog_t		*log = mp->m_log;
 			xfs_lsn_t	sync_lsn;
@@ -3714,12 +3714,12 @@ xfs_inode_flush(
 
 			if (flags & FLUSH_SYNC)
 				log_flags |= XFS_LOG_SYNC;
-			return xfs_log_force(mp, iip->ili_last_lsn,
-						log_flags);
+			return xfs_log_force(mp, iip->ili_last_lsn, log_flags);
 		}
 	}
 
-	/* We make this non-blocking if the inode is contended,
+	/*
+	 * We make this non-blocking if the inode is contended,
 	 * return EAGAIN to indicate to the caller that they
 	 * did not succeed. This prevents the flush path from
 	 * blocking on inodes inside another operation right