Bug 197917

Summary:	pipe(7): 'Open file status flags' is missing O_DIRECT
Product:	Documentation	Reporter:	Martin H. (mar-tSIEzQ)
Component:	man-pages	Assignee:	documentation_man-pages (documentation_man-pages)
Status:	RESOLVED CODE_FIX
Severity:	normal	CC:	mtk.manpages
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:		Subsystem:
Regression:	No	Bisected commit-id:

Description Martin H. 2017-11-19 14:57:53 UTC

pipe(2) already documents this flag.
Since the following commit changes to O_DIRECT via fcntl are allowed too:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/fs/fcntl.c?id=0dbf5f20652108106cb822ad7662c786baaa03ff

Comment 1 Michael Kerrisk 2017-11-23 12:24:49 UTC

I've added this sentence to pipe(2):

              Since Linux 4.5, it is possible to change the O_DIRECT set‐
              ting of a pipe file descriptor using fcntl(2).

I'll close this bug now. Please reopen if you think more work is needed.