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From(Alan Cox)
SubjectRe: Contiguous files and I/O buffered
DateThu, 29 Jan 1998 10:29:14 +0000 (GMT)
> > > No. setvbuf() forces C library not to buffer. Currenlty, there's no
> > > way to force kernel not to buffer.
> > 
> > Open the file O_SYNC.
> 
> 	Will this turn off kernel-level page cache off??

No but all pages will be written immediately, and then kept as a read cache


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