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membarrier.2: Clarify details of return value 

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
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Michael Kerrisk 2015-12-15 16:15:39 +01:00
parent 9eb5be29b8
commit 7a9c62ef10
1 changed files with 8 additions and 10 deletions
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18
man2/membarrier.2
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@ -136,17 +136,15 @@ and
.I errno
is set appropriately.
For a given command, with flags argument set to 0, this system call is
For a given command, with
.I flags
set to 0, this system call is
guaranteed to always return the same value until reboot.
Therefore, it
is sufficient to handle errors in a program or library initialization
function.
Further calls with the same parameters will lead to the same
result.
Therefore, for flag argument set to 0, error handling is only
required for the first calls to the
.BR membarrier ()
system call in an application.
Further calls with the same arguments will lead to the same result.
Therefore, with
.I flags
set to 0, error handling is required only for the first call to
.BR membarrier ().
.SH ERRORS
.TP