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- // SPDX-License-Identifier: GPL-2.0-only
- /*
- * Copyright (c) 2013
- * Phillip Lougher <[email protected]>
- */
- #include <linux/fs.h>
- #include <linux/vfs.h>
- #include <linux/kernel.h>
- #include <linux/slab.h>
- #include <linux/string.h>
- #include <linux/pagemap.h>
- #include <linux/mutex.h>
- #include "squashfs_fs.h"
- #include "squashfs_fs_sb.h"
- #include "squashfs_fs_i.h"
- #include "squashfs.h"
- /* Read separately compressed datablock and memcopy into page cache */
- int squashfs_readpage_block(struct page *page, u64 block, int bsize, int expected)
- {
- struct inode *i = page->mapping->host;
- struct squashfs_cache_entry *buffer = squashfs_get_datablock(i->i_sb,
- block, bsize);
- int res = buffer->error;
- if (res)
- ERROR("Unable to read page, block %llx, size %x\n", block,
- bsize);
- else
- squashfs_copy_cache(page, buffer, expected, 0);
- squashfs_cache_put(buffer);
- return res;
- }
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