diff options
Diffstat (limited to 'drivers/staging/erofs/unzip_vle_lz4.c')
| -rw-r--r-- | drivers/staging/erofs/unzip_vle_lz4.c | 27 |
1 files changed, 24 insertions, 3 deletions
diff --git a/drivers/staging/erofs/unzip_vle_lz4.c b/drivers/staging/erofs/unzip_vle_lz4.c index 1a428658cbea..52797bd89da1 100644 --- a/drivers/staging/erofs/unzip_vle_lz4.c +++ b/drivers/staging/erofs/unzip_vle_lz4.c @@ -11,6 +11,28 @@ * distribution for more details. */ #include "unzip_vle.h" +#include <linux/lz4.h> + +int z_erofs_unzip_lz4(void *in, void *out, size_t inlen, size_t outlen) +{ + int ret = LZ4_decompress_safe_partial(in, out, inlen, outlen, outlen); + + if (ret >= 0) + return ret; + + /* + * LZ4_decompress_safe_partial will return an error code + * (< 0) if decompression failed + */ + errln("%s, failed to decompress, in[%p, %zu] outlen[%p, %zu]", + __func__, in, inlen, out, outlen); + WARN_ON(1); + print_hex_dump(KERN_DEBUG, "raw data [in]: ", DUMP_PREFIX_OFFSET, + 16, 1, in, inlen, true); + print_hex_dump(KERN_DEBUG, "raw data [out]: ", DUMP_PREFIX_OFFSET, + 16, 1, out, outlen, true); + return -EIO; +} #if Z_EROFS_CLUSTER_MAX_PAGES > Z_EROFS_VLE_INLINE_PAGEVECS #define EROFS_PERCPU_NR_PAGES Z_EROFS_CLUSTER_MAX_PAGES @@ -57,7 +79,7 @@ int z_erofs_vle_plain_copy(struct page **compressed_pages, if (compressed_pages[j] != page) continue; - BUG_ON(mirrored[j]); + DBG_BUGON(mirrored[j]); memcpy(percpu_data + j * PAGE_SIZE, dst, PAGE_SIZE); mirrored[j] = true; break; @@ -99,8 +121,6 @@ int z_erofs_vle_plain_copy(struct page **compressed_pages, return 0; } -extern int z_erofs_unzip_lz4(void *in, void *out, size_t inlen, size_t outlen); - int z_erofs_vle_unzip_fast_percpu(struct page **compressed_pages, unsigned int clusterpages, struct page **pages, @@ -206,3 +226,4 @@ int z_erofs_vle_unzip_vmap(struct page **compressed_pages, } return ret; } + |