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zram: rename ZCOMP_PARAM_NO_LEVEL 

Patch series "zram: support algorithm-specific parameters".

This patchset adds support for algorithm-specific parameters.  For now,
only deflate-specific winbits can be configured, which fixes deflate
support on some s390 setups.


This patch (of 2):

Use more generic name because this will be default "un-set"
value for more params in the future.

Link: https://lkml.kernel.org/r/20250514024825.1745489-1-senozhatsky@chromium.org
Link: https://lkml.kernel.org/r/20250514024825.1745489-2-senozhatsky@chromium.org
Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Reviewed-by: Mikhail Zaslonko <zaslonko@linux.ibm.com>
Cc: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Sergey Senozhatsky 2025-05-14 11:47:50 +09:00 committed by Andrew Morton
parent d973692944
commit a5ade2e9fa
6 changed files with 7 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/block/zram/backend_deflate.c
View File

@ -22,7 +22,7 @@ static void deflate_release_params(struct zcomp_params *params)
static int deflate_setup_params(struct zcomp_params *params)
{
if (params->level == ZCOMP_PARAM_NO_LEVEL)
if (params->level == ZCOMP_PARAM_NOT_SET)
params->level = Z_DEFAULT_COMPRESSION;
return 0;

2
drivers/block/zram/backend_lz4.c
View File

@ -18,7 +18,7 @@ static void lz4_release_params(struct zcomp_params *params)
static int lz4_setup_params(struct zcomp_params *params)
{
if (params->level == ZCOMP_PARAM_NO_LEVEL)
if (params->level == ZCOMP_PARAM_NOT_SET)
params->level = LZ4_ACCELERATION_DEFAULT;
return 0;

2
drivers/block/zram/backend_lz4hc.c
View File

@ -18,7 +18,7 @@ static void lz4hc_release_params(struct zcomp_params *params)
static int lz4hc_setup_params(struct zcomp_params *params)
{
if (params->level == ZCOMP_PARAM_NO_LEVEL)
if (params->level == ZCOMP_PARAM_NOT_SET)
params->level = LZ4HC_DEFAULT_CLEVEL;
return 0;

2
drivers/block/zram/backend_zstd.c
View File

@ -58,7 +58,7 @@ static int zstd_setup_params(struct zcomp_params *params)
return -ENOMEM;
params->drv_data = zp;
if (params->level == ZCOMP_PARAM_NO_LEVEL)
if (params->level == ZCOMP_PARAM_NOT_SET)
params->level = zstd_default_clevel();
zp->cprm = zstd_get_params(params->level, PAGE_SIZE);

2
drivers/block/zram/zcomp.h
View File

@ -5,7 +5,7 @@
#include <linux/mutex.h>
#define ZCOMP_PARAM_NO_LEVEL INT_MIN
#define ZCOMP_PARAM_NOT_SET INT_MIN
/*
* Immutable driver (backend) parameters. The driver may attach private

4
drivers/block/zram/zram_drv.c
View File

@ -1276,7 +1276,7 @@ static void comp_params_reset(struct zram *zram, u32 prio)
struct zcomp_params *params = &zram->params[prio];
vfree(params->dict);
params->level = ZCOMP_PARAM_NO_LEVEL;
params->level = ZCOMP_PARAM_NOT_SET;
params->dict_sz = 0;
params->dict = NULL;
}
@ -1308,7 +1308,7 @@ static ssize_t algorithm_params_store(struct device *dev,
const char *buf,
size_t len)
{
s32 prio = ZRAM_PRIMARY_COMP, level = ZCOMP_PARAM_NO_LEVEL;
s32 prio = ZRAM_PRIMARY_COMP, level = ZCOMP_PARAM_NOT_SET;
char *args, *param, *val, *algo = NULL, *dict_path = NULL;
struct zram *zram = dev_to_zram(dev);
int ret;