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db98b43086
Squashfs_readahead uses the "file direct" version of the page actor, and so build it unconditionally. Link: https://lkml.kernel.org/r/20220617083810.337573-3-hsinyi@chromium.org Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk> Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org> Reported-by: kernel test robot <lkp@intel.com> Cc: Hou Tao <houtao1@huawei.com> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Miao Xie <miaoxie@huawei.com> Cc: Xiongwei Song <Xiongwei.Song@windriver.com> Cc: Zhang Yi <yi.zhang@huawei.com> Cc: Zheng Liang <zhengliang6@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
49 lines
1.3 KiB
C
49 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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#ifndef PAGE_ACTOR_H
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#define PAGE_ACTOR_H
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/*
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* Copyright (c) 2013
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* Phillip Lougher <phillip@squashfs.org.uk>
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*/
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struct squashfs_page_actor {
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union {
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void **buffer;
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struct page **page;
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};
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void *pageaddr;
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void *tmp_buffer;
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void *(*squashfs_first_page)(struct squashfs_page_actor *);
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void *(*squashfs_next_page)(struct squashfs_page_actor *);
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void (*squashfs_finish_page)(struct squashfs_page_actor *);
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int pages;
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int length;
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int next_page;
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int alloc_buffer;
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int returned_pages;
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pgoff_t next_index;
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};
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extern struct squashfs_page_actor *squashfs_page_actor_init(void **buffer,
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int pages, int length);
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extern struct squashfs_page_actor *squashfs_page_actor_init_special(
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struct squashfs_sb_info *msblk,
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struct page **page, int pages, int length);
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static inline void *squashfs_first_page(struct squashfs_page_actor *actor)
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{
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return actor->squashfs_first_page(actor);
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}
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static inline void *squashfs_next_page(struct squashfs_page_actor *actor)
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{
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return actor->squashfs_next_page(actor);
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}
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static inline void squashfs_finish_page(struct squashfs_page_actor *actor)
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{
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actor->squashfs_finish_page(actor);
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}
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static inline void squashfs_actor_nobuff(struct squashfs_page_actor *actor)
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{
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actor->alloc_buffer = 0;
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}
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#endif
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