The patch titled Subject: lib/zlib: add zlib_deflate_dfltcc_enabled() function has been removed from the -mm tree. Its filename was lib-zlib-add-zlib_deflate_dfltcc_enabled-function.patch This patch was dropped because an updated version will be merged ------------------------------------------------------ From: Mikhail Zaslonko <zaslonko@xxxxxxxxxxxxx> Subject: lib/zlib: add zlib_deflate_dfltcc_enabled() function Add a new function to zlib.h checking if s390 Deflate-Conversion facility is installed and enabled. Link: http://lkml.kernel.org/r/20191209152948.37080-6-zaslonko@xxxxxxxxxxxxx Signed-off-by: Mikhail Zaslonko <zaslonko@xxxxxxxxxxxxx> Cc: Chris Mason <clm@xxxxxx> Cc: Christian Borntraeger <borntraeger@xxxxxxxxxx> Cc: David Sterba <dsterba@xxxxxxxx> Cc: Eduard Shishkin <edward6@xxxxxxxxxxxxx> Cc: Heiko Carstens <heiko.carstens@xxxxxxxxxx> Cc: Ilya Leoshkevich <iii@xxxxxxxxxxxxx> Cc: Josef Bacik <josef@xxxxxxxxxxxxxx> Cc: Richard Purdie <rpurdie@xxxxxxxxx> Cc: Vasily Gorbik <gor@xxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- include/linux/zlib.h | 6 ++++++ lib/zlib_deflate/deflate.c | 6 ++++++ lib/zlib_deflate/deflate_syms.c | 1 + lib/zlib_dfltcc/dfltcc.h | 3 +++ 4 files changed, 16 insertions(+) --- a/include/linux/zlib.h~lib-zlib-add-zlib_deflate_dfltcc_enabled-function +++ a/include/linux/zlib.h @@ -191,6 +191,12 @@ extern int zlib_deflate_workspacesize (i exceed those passed here. */ +extern int zlib_deflate_dfltcc_enabled (void); +/* + Returns 1 if Deflate-Conversion facility is installed and enabled, + otherwise 0. +*/ + /* extern int deflateInit (z_streamp strm, int level); --- a/lib/zlib_deflate/deflate.c~lib-zlib-add-zlib_deflate_dfltcc_enabled-function +++ a/lib/zlib_deflate/deflate.c @@ -59,6 +59,7 @@ #define DEFLATE_RESET_HOOK(strm) do {} while (0) #define DEFLATE_HOOK(strm, flush, bstate) 0 #define DEFLATE_NEED_CHECKSUM(strm) 1 +#define DEFLATE_DFLTCC_ENABLED() 0 #endif /* =========================================================================== @@ -1138,3 +1139,8 @@ int zlib_deflate_workspacesize(int windo + zlib_deflate_head_memsize(memLevel) + zlib_deflate_overlay_memsize(memLevel); } + +int zlib_deflate_dfltcc_enabled(void) +{ + return DEFLATE_DFLTCC_ENABLED(); +} --- a/lib/zlib_deflate/deflate_syms.c~lib-zlib-add-zlib_deflate_dfltcc_enabled-function +++ a/lib/zlib_deflate/deflate_syms.c @@ -12,6 +12,7 @@ #include <linux/zlib.h> EXPORT_SYMBOL(zlib_deflate_workspacesize); +EXPORT_SYMBOL(zlib_deflate_dfltcc_enabled); EXPORT_SYMBOL(zlib_deflate); EXPORT_SYMBOL(zlib_deflateInit2); EXPORT_SYMBOL(zlib_deflateEnd); --- a/lib/zlib_dfltcc/dfltcc.h~lib-zlib-add-zlib_deflate_dfltcc_enabled-function +++ a/lib/zlib_dfltcc/dfltcc.h @@ -3,6 +3,7 @@ #define DFLTCC_H #include "../zlib_deflate/defutil.h" +#include "dfltcc_util.h" /* * Tuning parameters. @@ -121,6 +122,8 @@ dfltcc_inflate_action dfltcc_inflate(z_s #define DEFLATE_NEED_CHECKSUM(strm) (!dfltcc_can_deflate((strm))) +#define DEFLATE_DFLTCC_ENABLED() is_dfltcc_enabled() + #define INFLATE_RESET_HOOK(strm) \ dfltcc_reset((strm), sizeof(struct inflate_state)) _ Patches currently in -mm which might be from zaslonko@xxxxxxxxxxxxx are btrfs-use-larger-zlib-buffer-for-s390-hardware-compression.patch