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zram: remove max_num_devices limitation

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Limiting the number of zram devices to 32 (default max_num_devices value)
is confusing, let's drop it.  A user with 2TB or 4TB of RAM, for example,
can request as many devices as he can handle.

Signed-off-by: Sergey Senozhatsky <[email protected]>
Acked-by: Minchan Kim <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Sergey Senozhatsky 2015-06-25 15:00:11 -07:00 • committed by Linus Torvalds
commit c3cdb40e66
3 changed files with 4 additions and 14 deletions
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8
drivers/block/zram/zram_drv.c
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@ -1287,12 +1287,6 @@ static int __init zram_init(void)
{
int ret, dev_id;
if (num_devices > max_num_devices) {
pr_warn("Invalid value for num_devices: %u\n",
num_devices);
return -EINVAL;
}
zram_major = register_blkdev(0, "zram");
if (zram_major <= 0) {
pr_warn("Unable to get major number\n");
@ -1322,7 +1316,7 @@ module_init(zram_init);
module_exit(zram_exit);
module_param(num_devices, uint, 0);
MODULE_PARM_DESC(num_devices, "Number of zram devices");
MODULE_PARM_DESC(num_devices, "Number of pre-created zram devices");
MODULE_LICENSE("Dual BSD/GPL");
MODULE_AUTHOR("Nitin Gupta <[email protected]>");

6
drivers/block/zram/zram_drv.h
View file

@ -20,12 +20,6 @@
#include "zcomp.h"
/*
* Some arbitrary value. This is just to catch
* invalid value for num_devices module parameter.
*/
static const unsigned max_num_devices = 32;
/*-- Configurable parameters */
/*