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param: fix module param locks when !CONFIG_SYSFS.

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As Dan Streetman points out, the entire point of locking for is to
stop sysfs accesses, so they're elided entirely in the !SYSFS case.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell 2015-06-26 06:44:38 +09:30
parent 38183b9c31
commit cf2fde7b39
3 changed files with 24 additions and 5 deletions
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2
include/linux/module.h
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@ -240,7 +240,9 @@ struct module {
unsigned int num_syms;
/* Kernel parameters. */
#ifdef CONFIG_SYSFS
struct mutex param_lock;
#endif
struct kernel_param *kp;
unsigned int num_kp;