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PR/26567 CVS commit: src/sys/kern

The following reply was made to PR kern/26567; it has been noted by GNATS.

From: David Laight <>
Subject: PR/26567 CVS commit: src/sys/kern
Date: Sun, 13 Dec 2009 20:02:24 +0000

 Module Name:   src
 Committed By:  dsl
 Date:          Sun Dec 13 20:02:23 UTC 2009
 Modified Files:
        src/sys/kern: sys_pipe.c
 Log Message:
 Another, better, fix for PR/26567.
 Only sleep once within each pipe_read/pipe_write call.
 If there is no data/space available after we wakeup return ERESTART so
 then the 'fd' number is validated again.
 A simple broadcast of the cvs is then enough to evict the correct threads
 when close() is called from an active thread.
 To generate a diff of this commit:
 cvs rdiff -u -r1.124 -r1.125 src/sys/kern/sys_pipe.c
 Please note that diffs are not public domain; they are subject to the
 copyright notices on the relevant files.

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