Commit-ID: 3326c1ceee234e63160852720d48be8a8f7a6d08
Gitweb: http://git.kernel.org/tip/3326c1ceee234e63160852720d48be8a8f7a6d08
Author: Arnd Bergmann <arnd@xxxxxxxxxxxxxxxx>
AuthorDate: Tue, 23 Mar 2010 19:09:33 +0100
Committer: Frederic Weisbecker <fweisbec@xxxxxxxxx>
CommitDate: Sun, 4 Apr 2010 15:27:58 +0200
perf_event: Make perf fd non seekable
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@xxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
[drop the nonseekable_open, not needed for anon inodes]
Signed-off-by: Frederic Weisbecker <fweisbec@xxxxxxxxx>
---
kernel/perf_event.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/kernel/perf_event.c b/kernel/perf_event.c
index 63fbce1..4aa50ff 100644
--- a/kernel/perf_event.c
+++ b/kernel/perf_event.c
@@ -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,
--
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