#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"
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:
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:
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;
}