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prctl.2: Note semantics of IO_FLUSHER state with respect to fork(2) and execve(2) 

Reported-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2020-04-06 07:50:41 +02:00
parent 22a2e0553b
commit f3c29937e6
1 changed files with 5 additions and 0 deletions
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man2/prctl.2
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@ -1401,6 +1401,11 @@ and
.IR arg5
must be zero.
.IP
The IO_FLUSHER state is inherited by a child process created via
.BR fork (2)
and is preserved across
.BR execve (2).
.IP
Examples of IO_FLUSHER applications are FUSE daemons, SCSI device
emulation daemons, and daemons that perform error handling like multipath
path recovery applications.