diff options
Diffstat (limited to 'fs/erofs/compress.h')
| -rw-r--r-- | fs/erofs/compress.h | 28 |
1 files changed, 19 insertions, 9 deletions
diff --git a/fs/erofs/compress.h b/fs/erofs/compress.h index 3701c72bacb2..579406504919 100644 --- a/fs/erofs/compress.h +++ b/fs/erofs/compress.h @@ -8,11 +8,6 @@ #include "internal.h" -enum { - Z_EROFS_COMPRESSION_SHIFTED = Z_EROFS_COMPRESSION_MAX, - Z_EROFS_COMPRESSION_RUNTIME_MAX -}; - struct z_erofs_decompress_req { struct super_block *sb; struct page **in, **out; @@ -25,6 +20,12 @@ struct z_erofs_decompress_req { bool inplace_io, partial_decoding; }; +struct z_erofs_decompressor { + int (*decompress)(struct z_erofs_decompress_req *rq, + struct page **pagepool); + char *name; +}; + /* some special page->private (unsigned long, see below) */ #define Z_EROFS_SHORTLIVED_PAGE (-1UL << 2) #define Z_EROFS_PREALLOCATED_PAGE (-2UL << 2) @@ -63,7 +64,7 @@ static inline bool z_erofs_is_shortlived_page(struct page *page) return true; } -static inline bool z_erofs_put_shortlivedpage(struct list_head *pagepool, +static inline bool z_erofs_put_shortlivedpage(struct page **pagepool, struct page *page) { if (!z_erofs_is_shortlived_page(page)) @@ -74,13 +75,22 @@ static inline bool z_erofs_put_shortlivedpage(struct list_head *pagepool, put_page(page); } else { /* follow the pcluster rule above. */ - set_page_private(page, 0); - list_add(&page->lru, pagepool); + erofs_pagepool_add(pagepool, page); } return true; } +#define MNGD_MAPPING(sbi) ((sbi)->managed_cache->i_mapping) +static inline bool erofs_page_is_managed(const struct erofs_sb_info *sbi, + struct page *page) +{ + return page->mapping == MNGD_MAPPING(sbi); +} + int z_erofs_decompress(struct z_erofs_decompress_req *rq, - struct list_head *pagepool); + struct page **pagepool); +/* prototypes for specific algorithms */ +int z_erofs_lzma_decompress(struct z_erofs_decompress_req *rq, + struct page **pagepool); #endif |