diff options
| author | Christoph Hellwig <hch@lst.de> | 2016-11-25 09:07:46 +0100 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2016-11-30 13:45:19 +0100 |
| commit | 974b1adc3b103fae1dbc1fe6a8aceeca2878f20e (patch) | |
| tree | 0b0aa4829383f26f184e6dc631ab36ae40a93554 /fs/btrfs/zlib.c | |
| parent | 0c476a5d7f63bdae0b6188a191a6e9eb8f1024d7 (diff) | |
btrfs: use bio iterators for the decompression handlers
Pass the full bio to the decompression routines and use bio iterators
to iterate over the data in the bio.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/zlib.c')
| -rw-r--r-- | fs/btrfs/zlib.c | 15 |
1 files changed, 5 insertions, 10 deletions
diff --git a/fs/btrfs/zlib.c b/fs/btrfs/zlib.c index 0ed90ccd81eb..da497f184ff4 100644 --- a/fs/btrfs/zlib.c +++ b/fs/btrfs/zlib.c @@ -210,10 +210,9 @@ out: return ret; } -static int zlib_decompress_biovec(struct list_head *ws, struct page **pages_in, +static int zlib_decompress_bio(struct list_head *ws, struct page **pages_in, u64 disk_start, - struct bio_vec *bvec, - int vcnt, + struct bio *orig_bio, size_t srclen) { struct workspace *workspace = list_entry(ws, struct workspace, list); @@ -222,10 +221,8 @@ static int zlib_decompress_biovec(struct list_head *ws, struct page **pages_in, char *data_in; size_t total_out = 0; unsigned long page_in_index = 0; - unsigned long page_out_index = 0; unsigned long total_pages_in = DIV_ROUND_UP(srclen, PAGE_SIZE); unsigned long buf_start; - unsigned long pg_offset; data_in = kmap(pages_in[page_in_index]); workspace->strm.next_in = data_in; @@ -235,7 +232,6 @@ static int zlib_decompress_biovec(struct list_head *ws, struct page **pages_in, workspace->strm.total_out = 0; workspace->strm.next_out = workspace->buf; workspace->strm.avail_out = PAGE_SIZE; - pg_offset = 0; /* If it's deflate, and it's got no preset dictionary, then we can tell zlib to skip the adler32 check. */ @@ -267,8 +263,7 @@ static int zlib_decompress_biovec(struct list_head *ws, struct page **pages_in, ret2 = btrfs_decompress_buf2page(workspace->buf, buf_start, total_out, disk_start, - bvec, vcnt, - &page_out_index, &pg_offset); + orig_bio); if (ret2 == 0) { ret = 0; goto done; @@ -301,7 +296,7 @@ done: if (data_in) kunmap(pages_in[page_in_index]); if (!ret) - btrfs_clear_biovec_end(bvec, vcnt, page_out_index, pg_offset); + zero_fill_bio(orig_bio); return ret; } @@ -408,6 +403,6 @@ const struct btrfs_compress_op btrfs_zlib_compress = { .alloc_workspace = zlib_alloc_workspace, .free_workspace = zlib_free_workspace, .compress_pages = zlib_compress_pages, - .decompress_biovec = zlib_decompress_biovec, + .decompress_bio = zlib_decompress_bio, .decompress = zlib_decompress, }; |