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make sys_poll() wait at least timeout ms

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schedule_timeout(jiffies) waits for at least jiffies - 1.  Add 1 jiffie to
the timeout_jiffies calculated in sys_poll() to wait at least
timeout_msecs, like poll() manpage says.

Signed-off-by: Karsten Wiese <fzu@wemgehoertderstaat.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Karsten Wiese 2008-02-06 01:37:59 -08:00 committed by Linus Torvalds
parent 54d2a37eda
commit 844fcc5396
1 changed files with 1 additions and 1 deletions
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2
fs/select.c
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@ -739,7 +739,7 @@ asmlinkage long sys_poll(struct pollfd __user *ufds, unsigned int nfds,
timeout_jiffies = -1;
else
#endif
timeout_jiffies = msecs_to_jiffies(timeout_msecs);
timeout_jiffies = msecs_to_jiffies(timeout_msecs) + 1;
} else {
/* Infinite (< 0) or no (0) timeout */
timeout_jiffies = timeout_msecs;