1 files changed, 70 insertions, 23 deletions

diff --git a/fs/ufs/util.c b/fs/ufs/util.c
index a2f13f45708..b6c2f94e041 100644
--- a/fs/ufs/util.c
+++ b/fs/ufs/util.c
@@ -8,9 +8,10 @@
  
 #include <linux/string.h>
 #include <linux/slab.h>
-#include <linux/ufs_fs.h>
 #include <linux/buffer_head.h>
 
+#include "ufs_fs.h"
+#include "ufs.h"
 #include "swab.h"
 #include "util.h"
 
@@ -25,8 +26,7 @@ struct ufs_buffer_head * _ubh_bread_ (struct ufs_sb_private_info * uspi,
 	count = size >> uspi->s_fshift;
 	if (count > UFS_MAXFRAG)
 		return NULL;
-	ubh = (struct ufs_buffer_head *)
-		kmalloc (sizeof (struct ufs_buffer_head), GFP_KERNEL);
+	ubh = kmalloc (sizeof (struct ufs_buffer_head), GFP_NOFS);
 	if (!ubh)
 		return NULL;
 	ubh->fragment = fragment;
@@ -112,21 +112,17 @@ void ubh_mark_buffer_uptodate (struct ufs_buffer_head * ubh, int flag)
 	}
 }
 
-void ubh_ll_rw_block(int rw, struct ufs_buffer_head *ubh)
+void ubh_sync_block(struct ufs_buffer_head *ubh)
 {
-	if (!ubh)
-		return;
+	if (ubh) {
+		unsigned i;
 
-	ll_rw_block(rw, ubh->count, ubh->bh);
-}
+		for (i = 0; i < ubh->count; i++)
+			write_dirty_buffer(ubh->bh[i], WRITE);
 
-void ubh_wait_on_buffer (struct ufs_buffer_head * ubh)
-{
-	unsigned i;
-	if (!ubh)
-		return;
-	for ( i = 0; i < ubh->count; i++ )
-		wait_on_buffer (ubh->bh[i]);
+		for (i = 0; i < ubh->count; i++)
+			wait_on_buffer(ubh->bh[i]);
+	}
 }
 
 void ubh_bforget (struct ufs_buffer_head * ubh)
@@ -184,14 +180,13 @@ void _ubh_memcpyubh_(struct ufs_sb_private_info * uspi,
 dev_t
 ufs_get_inode_dev(struct super_block *sb, struct ufs_inode_info *ufsi)
 {
-	__fs32 fs32;
+	__u32 fs32;
 	dev_t dev;
 
 	if ((UFS_SB(sb)->s_flags & UFS_ST_MASK) == UFS_ST_SUNx86)
-		fs32 = ufsi->i_u1.i_data[1];
+		fs32 = fs32_to_cpu(sb, ufsi->i_u1.i_data[1]);
 	else
-		fs32 = ufsi->i_u1.i_data[0];
-	fs32 = fs32_to_cpu(sb, fs32);
+		fs32 = fs32_to_cpu(sb, ufsi->i_u1.i_data[0]);
 	switch (UFS_SB(sb)->s_flags & UFS_ST_MASK) {
 	case UFS_ST_SUNx86:
 	case UFS_ST_SUN:
@@ -212,7 +207,7 @@ ufs_get_inode_dev(struct super_block *sb, struct ufs_inode_info *ufsi)
 void
 ufs_set_inode_dev(struct super_block *sb, struct ufs_inode_info *ufsi, dev_t dev)
 {
-	__fs32 fs32;
+	__u32 fs32;
 
 	switch (UFS_SB(sb)->s_flags & UFS_ST_MASK) {
 	case UFS_ST_SUNx86:
@@ -227,9 +222,61 @@ ufs_set_inode_dev(struct super_block *sb, struct ufs_inode_info *ufsi, dev_t dev
 		fs32 = old_encode_dev(dev);
 		break;
 	}
-	fs32 = cpu_to_fs32(sb, fs32);
 	if ((UFS_SB(sb)->s_flags & UFS_ST_MASK) == UFS_ST_SUNx86)
-		ufsi->i_u1.i_data[1] = fs32;
+		ufsi->i_u1.i_data[1] = cpu_to_fs32(sb, fs32);
 	else
-		ufsi->i_u1.i_data[0] = fs32;
+		ufsi->i_u1.i_data[0] = cpu_to_fs32(sb, fs32);
+}
+
+/**
+ * ufs_get_locked_page() - locate, pin and lock a pagecache page, if not exist
+ * read it from disk.
+ * @mapping: the address_space to search
+ * @index: the page index
+ *
+ * Locates the desired pagecache page, if not exist we'll read it,
+ * locks it, increments its reference
+ * count and returns its address.
+ *
+ */
+
+struct page *ufs_get_locked_page(struct address_space *mapping,
+				 pgoff_t index)
+{
+	struct page *page;
+
+	page = find_lock_page(mapping, index);
+	if (!page) {
+		page = read_mapping_page(mapping, index, NULL);
+
+		if (IS_ERR(page)) {
+			printk(KERN_ERR "ufs_change_blocknr: "
+			       "read_mapping_page error: ino %lu, index: %lu\n",
+			       mapping->host->i_ino, index);
+			goto out;
+		}
+
+		lock_page(page);
+
+		if (unlikely(page->mapping == NULL)) {
+			/* Truncate got there first */
+			unlock_page(page);
+			page_cache_release(page);
+			page = NULL;
+			goto out;
+		}
+
+		if (!PageUptodate(page) || PageError(page)) {
+			unlock_page(page);
+			page_cache_release(page);
+
+			printk(KERN_ERR "ufs_change_blocknr: "
+			       "can not read page: ino %lu, index: %lu\n",
+			       mapping->host->i_ino, index);
+
+			page = ERR_PTR(-EIO);
+		}
+	}
+out:
+	return page;
 }