`struct workspace' used for zlib compression contains two zlib
z_stream-s: `def_strm' used in zlib_compress_pages(), and `inf_strm'
used in zlib_decompress/zlib_decompress_biovec(). None of these
functions use `inf_strm' and `def_strm' simultaniously, meaning that
for every compress/decompress
Hello,
This patch reduces zlib compression memory usage by `merging' inflate
and deflate streams into a single stream.
-- v2: rebased-on linux-next rc4 20140707
Sergey Senozhatsky (1):
btrfs compression: merge inflate and deflate z_streams
fs/btrfs/zlib.c | 138
