diff options
| author | Sergey Senozhatsky <senozhatsky@chromium.org> | 2024-09-02 13:56:01 +0300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-09-10 02:39:09 +0300 |
| commit | f2bac7ad187d77e2a053d3cd04b158a06b683d26 (patch) | |
| tree | 5239c4e793ff631fd64be9cb18e433f32724d1d6 /drivers/block/zram/zram_drv.c | |
| parent | 1a78390d8760c20c188f27feae74ddb44ae6f0bb (diff) | |
| download | linux-f2bac7ad187d77e2a053d3cd04b158a06b683d26.tar.xz | |
zram: introduce zcomp_params structure
We will store a per-algorithm parameters there (compression level,
dictionary, dictionary size, etc.).
Link: https://lkml.kernel.org/r/20240902105656.1383858-14-senozhatsky@chromium.org
Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Nick Terrell <terrelln@fb.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'drivers/block/zram/zram_drv.c')
| -rw-r--r-- | drivers/block/zram/zram_drv.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c index 93042da8ccdf..ff6724bbdf91 100644 --- a/drivers/block/zram/zram_drv.c +++ b/drivers/block/zram/zram_drv.c @@ -1979,6 +1979,20 @@ static void zram_slot_free_notify(struct block_device *bdev, zram_slot_unlock(zram, index); } +static void zram_comp_params_reset(struct zram *zram) +{ + u32 prio; + + for (prio = ZRAM_PRIMARY_COMP; prio < ZRAM_MAX_COMPS; prio++) { + struct zcomp_params *params = &zram->params[prio]; + + vfree(params->dict); + params->level = ZCOMP_PARAM_NO_LEVEL; + params->dict_sz = 0; + params->dict = NULL; + } +} + static void zram_destroy_comps(struct zram *zram) { u32 prio; @@ -1992,6 +2006,8 @@ static void zram_destroy_comps(struct zram *zram) zcomp_destroy(comp); zram->num_active_comps--; } + + zram_comp_params_reset(zram); } static void zram_reset_device(struct zram *zram) @@ -2049,7 +2065,8 @@ static ssize_t disksize_store(struct device *dev, if (!zram->comp_algs[prio]) continue; - comp = zcomp_create(zram->comp_algs[prio]); + comp = zcomp_create(zram->comp_algs[prio], + &zram->params[prio]); if (IS_ERR(comp)) { pr_err("Cannot initialise %s compressing backend\n", zram->comp_algs[prio]); @@ -2254,6 +2271,7 @@ static int zram_add(void) if (ret) goto out_cleanup_disk; + zram_comp_params_reset(zram); comp_algorithm_set(zram, ZRAM_PRIMARY_COMP, default_compressor); zram_debugfs_register(zram); |