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null_blk: Fix the description of the cache_size module argument

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 <zhanggenjian@kylinos.cn>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

authored by

Genjian Zhang and committed by
Jens Axboe 7942b226 995412e2

+1 -1
+1 -1
drivers/block/null_blk/main.c
··· 223 223 224 224 static unsigned long g_cache_size; 225 225 module_param_named(cache_size, g_cache_size, ulong, 0444); 226 - MODULE_PARM_DESC(mbps, "Cache size in MiB for memory-backed device. Default: 0 (none)"); 226 + MODULE_PARM_DESC(cache_size, "Cache size in MiB for memory-backed device. Default: 0 (none)"); 227 227 228 228 static bool g_fua = true; 229 229 module_param_named(fua, g_fua, bool, 0444);