diff options
Diffstat (limited to 'fs/btrfs/lzo.c')
| -rw-r--r-- | fs/btrfs/lzo.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/fs/btrfs/lzo.c b/fs/btrfs/lzo.c index e6e28a9c7987..430ad36b8b08 100644 --- a/fs/btrfs/lzo.c +++ b/fs/btrfs/lzo.c @@ -55,6 +55,9 @@ * 0x1000 | SegHdr N+1| Data payload N+1 ... | */ +#define WORKSPACE_BUF_LENGTH (lzo1x_worst_compress(PAGE_SIZE)) +#define WORKSPACE_CBUF_LENGTH (lzo1x_worst_compress(PAGE_SIZE)) + struct workspace { void *mem; void *buf; /* where decompressed data goes */ @@ -83,8 +86,8 @@ struct list_head *lzo_alloc_workspace(unsigned int level) return ERR_PTR(-ENOMEM); workspace->mem = kvmalloc(LZO1X_MEM_COMPRESS, GFP_KERNEL); - workspace->buf = kvmalloc(lzo1x_worst_compress(PAGE_SIZE), GFP_KERNEL); - workspace->cbuf = kvmalloc(lzo1x_worst_compress(PAGE_SIZE), GFP_KERNEL); + workspace->buf = kvmalloc(WORKSPACE_BUF_LENGTH, GFP_KERNEL); + workspace->cbuf = kvmalloc(WORKSPACE_CBUF_LENGTH, GFP_KERNEL); if (!workspace->mem || !workspace->buf || !workspace->cbuf) goto fail; @@ -380,7 +383,7 @@ int lzo_decompress_bio(struct list_head *ws, struct compressed_bio *cb) kunmap(cur_page); cur_in += LZO_LEN; - if (seg_len > lzo1x_worst_compress(PAGE_SIZE)) { + if (seg_len > WORKSPACE_CBUF_LENGTH) { /* * seg_len shouldn't be larger than we have allocated * for workspace->cbuf @@ -433,7 +436,7 @@ int lzo_decompress(struct list_head *ws, unsigned char *data_in, struct workspace *workspace = list_entry(ws, struct workspace, list); size_t in_len; size_t out_len; - size_t max_segment_len = lzo1x_worst_compress(PAGE_SIZE); + size_t max_segment_len = WORKSPACE_BUF_LENGTH; int ret = 0; char *kaddr; unsigned long bytes; |