Re: Typecasting a void pointer to unsigned long in zsmalloc.c
Shouldn't there be a special type for doing this type of conversion?
That type is "unsigned long" :)
Wouldn't "uintptr_t" be a more explicit type for storing pointer addresses as integers? It seems to me it has the advantage of expressing intent better for us human readers. See <linux/types.h>. Yes, it is currently defined as an "unsigned long."
On Thu, Jan 23, 2025 at 05:58:10PM +0000, Alex Hogen wrote:
Shouldn't there be a special type for doing this type of conversion?
That type is "unsigned long" :)
Wouldn't "uintptr_t" be a more explicit type for storing pointer addresses as integers? It seems to me it has the advantage of expressing intent better for us human readers. See <linux/types.h>. Yes, it is currently defined as an "unsigned long."
"unitptr_t" came years, if not decades, after the policy of "a pointer fits into an unsigned long" was the rule (i.e. from the very first release of Linux. And those crazy _t types are for userspace code, don't use them in the kernel, there's no need. thanks, greg k-h
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Alex Hogen -
Greg KH