diff options
Diffstat (limited to 'fs/erofs/compress.h')
| -rw-r--r-- | fs/erofs/compress.h | 47 |
1 files changed, 18 insertions, 29 deletions
diff --git a/fs/erofs/compress.h b/fs/erofs/compress.h index 7bfe251680ec..84c8e52581f4 100644 --- a/fs/erofs/compress.h +++ b/fs/erofs/compress.h @@ -11,6 +11,7 @@ struct z_erofs_decompress_req { struct super_block *sb; struct page **in, **out; + unsigned int inpages, outpages; unsigned short pageofs_in, pageofs_out; unsigned int inputsize, outputsize; @@ -22,36 +23,15 @@ struct z_erofs_decompress_req { struct z_erofs_decompressor { int (*config)(struct super_block *sb, struct erofs_super_block *dsb, void *data, int size); - int (*decompress)(struct z_erofs_decompress_req *rq, - struct page **pagepool); + const char *(*decompress)(struct z_erofs_decompress_req *rq, + struct page **pagepool); int (*init)(void); void (*exit)(void); char *name; }; -/* some special page->private (unsigned long, see below) */ #define Z_EROFS_SHORTLIVED_PAGE (-1UL << 2) -#define Z_EROFS_PREALLOCATED_PAGE (-2UL << 2) - -/* - * For all pages in a pcluster, page->private should be one of - * Type Last 2bits page->private - * short-lived page 00 Z_EROFS_SHORTLIVED_PAGE - * preallocated page (tryalloc) 00 Z_EROFS_PREALLOCATED_PAGE - * cached/managed page 00 pointer to z_erofs_pcluster - * online page (file-backed, 01/10/11 sub-index << 2 | count - * some pages can be used for inplace I/O) - * - * page->mapping should be one of - * Type page->mapping - * short-lived page NULL - * preallocated page NULL - * cached/managed page non-NULL or NULL (invalidated/truncated page) - * online page non-NULL - * - * For all managed pages, PG_private should be set with 1 extra refcount, - * which is used for page reclaim / migration. - */ +#define Z_EROFS_PREALLOCATED_FOLIO ((void *)(-2UL << 2)) /* * Currently, short-lived pages are pages directly from buddy system @@ -80,7 +60,6 @@ extern const struct z_erofs_decompressor *z_erofs_decomp[]; struct z_erofs_stream_dctx { struct z_erofs_decompress_req *rq; - unsigned int inpages, outpages; /* # of {en,de}coded pages */ int no, ni; /* the current {en,de}coded page # */ unsigned int avail_out; /* remaining bytes in the decoded buffer */ @@ -91,10 +70,20 @@ struct z_erofs_stream_dctx { bool bounced; /* is the bounce buffer used now? */ }; -int z_erofs_stream_switch_bufs(struct z_erofs_stream_dctx *dctx, void **dst, - void **src, struct page **pgpl); -int z_erofs_fixup_insize(struct z_erofs_decompress_req *rq, const char *padbuf, - unsigned int padbufsize); +const char *z_erofs_stream_switch_bufs(struct z_erofs_stream_dctx *dctx, + void **dst, void **src, struct page **pgpl); +const char *z_erofs_fixup_insize(struct z_erofs_decompress_req *rq, + const char *padbuf, unsigned int padbufsize); int __init z_erofs_init_decompressor(void); void z_erofs_exit_decompressor(void); +int z_erofs_crypto_decompress(struct z_erofs_decompress_req *rq, + struct page **pgpl); +int z_erofs_crypto_enable_engine(const char *name, int len); +#ifdef CONFIG_EROFS_FS_ZIP_ACCEL +void z_erofs_crypto_disable_all_engines(void); +int z_erofs_crypto_show_engines(char *buf, int size, char sep); +#else +static inline void z_erofs_crypto_disable_all_engines(void) {} +static inline int z_erofs_crypto_show_engines(char *buf, int size, char sep) { return 0; } +#endif #endif |