Messages in this thread |  | | | Date | Thu, 04 May 2006 09:15:39 +0200 | | From | Eric Piel <> | | Subject | Re: limits / PIPE_BUF? |
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05/04/2006 07:55 AM, Vadim Lobanov wrote/a écrit: > Hi, Hi!
: > > A snippet from include/linux/limits.h: > #define PIPE_BUF 4096 /* # bytes in atomic write to a pipe */ > > PIPE_BUF is a bit of an oddity. It is defined there, then redefined in > the arm header files, even though those header files are never included > anywhere. Actually, here, on a 2.6.16 source code, PIPE_BUF is used in arch/sparc/kernel/sys_sunos.c, arch/sparc64/kernel/sys_sunos32.c, and arch/sparc64/solaris/fs.c . It seems it's some kind of compatibility value with Sun's OS...
> Also, PIPE_BUF is never referenced by name in any of the Linux > code. And yet, it is still being mentioned in some Big And Scary > Warnings (tm): fs/autofs4/waitq.c or include/linux/pipe_fs_i.h, for > example. Maybe they wanted to say PIPE_BUFFERS ? (just wild guess)
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