Messages in this thread | | | Date | Tue, 18 Dec 2012 09:34:17 +0800 | Subject | Re: Are there u32 atomic bitops? (or dealing w/ i_flags) | From | Ming Lei <> |
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On Tue, Dec 18, 2012 at 9:10 AM, Andy Lutomirski <luto@amacapital.net> wrote: > I want to change inode->i_flags access to be atomic -- there are some > locking oddities right now, I think, and I want to use a new inode > flag to signal mtime updates from page_mkwrite. The problem is that > i_flags is an unsigned int, and making it an unsigned long seems like > a waste, but there aren't any u32 atomic bitops.
See below in include/linux/types.h
typedef struct { int counter; } atomic_t;
#ifdef CONFIG_64BIT typedef struct { long counter; } atomic64_t; #endif
Thanks, -- Ming Lei
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