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perf_event: Make perf fd non seekable

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Perf_event does not need seeking, so prevent it in order to
get rid of default_llseek, which uses the BKL.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Ingo Molnar <mingo@elte.hu>
[drop the nonseekable_open, not needed for anon inodes]
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
This commit is contained in:
Arnd Bergmann 2010-03-23 19:09:33 +01:00 committed by Frederic Weisbecker
parent 6cc8a7c1d8
commit 3326c1ceee
1 changed files with 1 additions and 0 deletions
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kernel/perf_event.c
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@ -2645,6 +2645,7 @@ static int perf_fasync(int fd, struct file *filp, int on)
}
static const struct file_operations perf_fops = {
.llseek = no_llseek,
.release = perf_release,
.read = perf_read,
.poll = perf_poll,