From 341a1b62a024e48a0deb9074b471618e05bc8cd0 Mon Sep 17 00:00:00 2001 From: Genjian Zhang Date: Fri, 15 Aug 2025 17:07:32 +0800 Subject: [PATCH] null_blk: Fix the description of the cache_size module argument [ Upstream commit 7942b226e6b84df13b46b76c01d3b6e07a1b349e ] When executing modinfo null_blk, there is an error in the description of module parameter mbps, and the output information of cache_size is incomplete.The output of modinfo before and after applying this patch is as follows: Before: [...] parm: cache_size:ulong [...] parm: mbps:Cache size in MiB for memory-backed device. Default: 0 (none) (uint) [...] After: [...] parm: cache_size:Cache size in MiB for memory-backed device. Default: 0 (none) (ulong) [...] parm: mbps:Limit maximum bandwidth (in MiB/s). Default: 0 (no limit) (uint) [...] Fixes: 058efe000b31 ("null_blk: add module parameters for 4 options") Signed-off-by: Genjian Zhang Reviewed-by: Damien Le Moal Signed-off-by: Jens Axboe Signed-off-by: Sasha Levin --- drivers/block/null_blk/main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/block/null_blk/main.c b/drivers/block/null_blk/main.c index 97ed3bd9707f..2dd254c720f5 100644 --- a/drivers/block/null_blk/main.c +++ b/drivers/block/null_blk/main.c @@ -211,7 +211,7 @@ MODULE_PARM_DESC(discard, "Support discard operations (requires memory-backed nu static unsigned long g_cache_size; module_param_named(cache_size, g_cache_size, ulong, 0444); -MODULE_PARM_DESC(mbps, "Cache size in MiB for memory-backed device. Default: 0 (none)"); +MODULE_PARM_DESC(cache_size, "Cache size in MiB for memory-backed device. Default: 0 (none)"); static unsigned int g_mbps; module_param_named(mbps, g_mbps, uint, 0444);