From 7a074e96dee62586c935c80cecd931431bfdd0be Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Wed, 2 May 2018 19:51:00 +0200 Subject: aio: implement io_pgetevents This is the io_getevents equivalent of ppoll/pselect and allows to properly mix signals and aio completions (especially with IOCB_CMD_POLL) and atomically executes the following sequence: sigset_t origmask; pthread_sigmask(SIG_SETMASK, &sigmask, &origmask); ret = io_getevents(ctx, min_nr, nr, events, timeout); pthread_sigmask(SIG_SETMASK, &origmask, NULL); Note that unlike many other signal related calls we do not pass a sigmask size, as that would get us to 7 arguments, which aren't easily supported by the syscall infrastructure. It seems a lot less painful to just add a new syscall variant in the unlikely case we're going to increase the sigset size. Signed-off-by: Christoph Hellwig Reviewed-by: Greg Kroah-Hartman Reviewed-by: Darrick J. Wong --- kernel/sys_ni.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'kernel/sys_ni.c') diff --git a/kernel/sys_ni.c b/kernel/sys_ni.c index 9791364925dc..183169c2a75b 100644 --- a/kernel/sys_ni.c +++ b/kernel/sys_ni.c @@ -43,7 +43,9 @@ COND_SYSCALL(io_submit); COND_SYSCALL_COMPAT(io_submit); COND_SYSCALL(io_cancel); COND_SYSCALL(io_getevents); +COND_SYSCALL(io_pgetevents); COND_SYSCALL_COMPAT(io_getevents); +COND_SYSCALL_COMPAT(io_pgetevents); /* fs/xattr.c */ -- cgit