diff options
Diffstat (limited to 'fs/btrfs/lzo.c')
| -rw-r--r-- | fs/btrfs/lzo.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/fs/btrfs/lzo.c b/fs/btrfs/lzo.c index aa9cd11f4b78..cd042c7567a4 100644 --- a/fs/btrfs/lzo.c +++ b/fs/btrfs/lzo.c @@ -118,7 +118,7 @@ int lzo_compress_pages(struct list_head *ws, struct address_space *mapping, struct workspace *workspace = list_entry(ws, struct workspace, list); int ret = 0; char *data_in; - char *cpage_out; + char *cpage_out, *sizes_ptr; int nr_pages = 0; struct page *in_page = NULL; struct page *out_page = NULL; @@ -258,10 +258,9 @@ int lzo_compress_pages(struct list_head *ws, struct address_space *mapping, } /* store the size of all chunks of compressed data */ - cpage_out = kmap(pages[0]); - write_compress_length(cpage_out, tot_out); - - kunmap(pages[0]); + sizes_ptr = kmap_local_page(pages[0]); + write_compress_length(sizes_ptr, tot_out); + kunmap_local(sizes_ptr); ret = 0; *total_out = tot_out; @@ -467,7 +466,7 @@ int lzo_decompress(struct list_head *ws, unsigned char *data_in, destlen = min_t(unsigned long, destlen, PAGE_SIZE); bytes = min_t(unsigned long, destlen, out_len - start_byte); - kaddr = kmap_atomic(dest_page); + kaddr = kmap_local_page(dest_page); memcpy(kaddr, workspace->buf + start_byte, bytes); /* @@ -477,7 +476,7 @@ int lzo_decompress(struct list_head *ws, unsigned char *data_in, */ if (bytes < destlen) memset(kaddr+bytes, 0, destlen-bytes); - kunmap_atomic(kaddr); + kunmap_local(kaddr); out: return ret; } |