[PATCH] read_mapping_page for address space

[powerpc.git] / fs / ntfs / file.c

diff --git a/fs/ntfs/file.c b/fs/ntfs/file.c
index fb413d3..88292f9 100644 (file)
--- a/fs/ntfs/file.c
+++ b/fs/ntfs/file.c
@@ -1,7 +1,7 @@
 /*
  * file.c - NTFS kernel file operations.  Part of the Linux-NTFS project.
  *
- * Copyright (c) 2001-2005 Anton Altaparmakov
+ * Copyright (c) 2001-2006 Anton Altaparmakov
  *
  * This program/include file is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as published
@@ -231,8 +231,7 @@ do_non_resident_extend:
                 * Read the page.  If the page is not present, this will zero
                 * the uninitialized regions for us.
                 */
-               page = read_cache_page(mapping, index,
-                               (filler_t*)mapping->a_ops->readpage, NULL);
+               page = read_mapping_page(mapping, index, NULL);
                if (IS_ERR(page)) {
                        err = PTR_ERR(page);
                        goto init_err_out;
@@ -248,7 +247,7 @@ do_non_resident_extend:
                 * enough to make ntfs_writepage() work.
                 */
                write_lock_irqsave(&ni->size_lock, flags);
-               ni->initialized_size = (index + 1) << PAGE_CACHE_SHIFT;
+               ni->initialized_size = (s64)(index + 1) << PAGE_CACHE_SHIFT;
                if (ni->initialized_size > new_init_size)
                        ni->initialized_size = new_init_size;
                write_unlock_irqrestore(&ni->size_lock, flags);
@@ -529,8 +528,8 @@ static int ntfs_prepare_pages_for_non_resident_write(struct page **pages,
                        "index 0x%lx, nr_pages 0x%x, pos 0x%llx, bytes 0x%zx.",
                        vi->i_ino, ni->type, pages[0]->index, nr_pages,
                        (long long)pos, bytes);
-       blocksize_bits = vi->i_blkbits;
-       blocksize = 1 << blocksize_bits;
+       blocksize = vol->sb->s_blocksize;
+       blocksize_bits = vol->sb->s_blocksize_bits;
        u = 0;
        do {
                struct page *page = pages[u];
@@ -943,7 +942,8 @@ rl_not_mapped_enoent:
                }
                ni->runlist.rl = rl;
                status.runlist_merged = 1;
-               ntfs_debug("Allocated cluster, lcn 0x%llx.", lcn);
+               ntfs_debug("Allocated cluster, lcn 0x%llx.",
+                               (unsigned long long)lcn);
                /* Map and lock the mft record and get the attribute record. */
                if (!NInoAttr(ni))
                        base_ni = ni;
@@ -1206,8 +1206,6 @@ rl_not_mapped_enoent:
                                        "attribute runlist in error code "
                                        "path.  Run chkdsk to recover the "
                                        "lost cluster.");
-                       make_bad_inode(vi);
-                       make_bad_inode(VFS_I(base_ni));
                        NVolSetErrors(vol);
                } else /* if (success) */ {
                        status.runlist_merged = 0;
@@ -1238,8 +1236,6 @@ rl_not_mapped_enoent:
                        ntfs_error(vol->sb, "Failed to restore attribute "
                                        "record in error code path.  Run "
                                        "chkdsk to recover.");
-                       make_bad_inode(vi);
-                       make_bad_inode(VFS_I(base_ni));
                        NVolSetErrors(vol);
                } else /* if (success) */ {
                        if (ntfs_mapping_pairs_build(vol, (u8*)a +
@@ -1252,8 +1248,6 @@ rl_not_mapped_enoent:
                                                "mapping pairs array in error "
                                                "code path.  Run chkdsk to "
                                                "recover.");
-                               make_bad_inode(vi);
-                               make_bad_inode(VFS_I(base_ni));
                                NVolSetErrors(vol);
                        }
                        flush_dcache_mft_record_page(ctx->ntfs_ino);
@@ -1489,14 +1483,15 @@ static inline void ntfs_flush_dcache_pages(struct page **pages,
                unsigned nr_pages)
 {
        BUG_ON(!nr_pages);
+       /*
+        * Warning: Do not do the decrement at the same time as the call to
+        * flush_dcache_page() because it is a NULL macro on i386 and hence the
+        * decrement never happens so the loop never terminates.
+        */
        do {
-               /*
-                * Warning: Do not do the decrement at the same time as the
-                * call because flush_dcache_page() is a NULL macro on i386
-                * and hence the decrement never happens.
-                */
+               --nr_pages;
                flush_dcache_page(pages[nr_pages]);
-       } while (--nr_pages > 0);
+       } while (nr_pages > 0);
 }
 
 /**
@@ -1525,7 +1520,7 @@ static inline int ntfs_commit_pages_after_non_resident_write(
 
        vi = pages[0]->mapping->host;
        ni = NTFS_I(vi);
-       blocksize = 1 << vi->i_blkbits;
+       blocksize = vi->i_sb->s_blocksize;
        end = pos + bytes;
        u = 0;
        do {
@@ -1622,11 +1617,8 @@ err_out:
                unmap_mft_record(base_ni);
        ntfs_error(vi->i_sb, "Failed to update initialized_size/i_size (error "
                        "code %i).", err);
-       if (err != -ENOMEM) {
+       if (err != -ENOMEM)
                NVolSetErrors(ni->vol);
-               make_bad_inode(VFS_I(base_ni));
-               make_bad_inode(vi);
-       }
        return err;
 }
 
@@ -1801,8 +1793,6 @@ err_out:
                ntfs_error(vi->i_sb, "Resident attribute commit write failed "
                                "with error %i.", err);
                NVolSetErrors(ni->vol);
-               make_bad_inode(VFS_I(base_ni));
-               make_bad_inode(vi);
        }
        if (ctx)
                ntfs_attr_put_search_ctx(ctx);
@@ -2304,7 +2294,7 @@ static int ntfs_file_fsync(struct file *filp, struct dentry *dentry,
 
 #endif /* NTFS_RW */
 
-struct file_operations ntfs_file_ops = {
+const struct file_operations ntfs_file_ops = {
        .llseek         = generic_file_llseek,   /* Seek inside file. */
        .read           = generic_file_read,     /* Read from file. */
        .aio_read       = generic_file_aio_read, /* Async read from file. */
@@ -2347,6 +2337,6 @@ struct inode_operations ntfs_file_inode_ops = {
 #endif /* NTFS_RW */
 };
 
-struct file_operations ntfs_empty_file_ops = {};
+const struct file_operations ntfs_empty_file_ops = {};
 
 struct inode_operations ntfs_empty_inode_ops = {};