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tracing: Do not block on splice if either file or splice NONBLOCK flag is set 

Currently only the splice NONBLOCK flag is checked to determine if
the splice read should block or not. But the file descriptor NONBLOCK
flag also needs to be checked.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt (Red Hat) 2013-02-28 20:03:06 -05:00 committed by Steven Rostedt
parent 92edca073c
commit 189e5784f6
1 changed files with 1 additions and 1 deletions
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2
kernel/trace/trace.c
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@ -4593,7 +4593,7 @@ tracing_buffers_splice_read(struct file *file, loff_t *ppos,
/* did we read anything? */
if (!spd.nr_pages) {
if (flags & SPLICE_F_NONBLOCK)
if ((file->f_flags & O_NONBLOCK) || (flags & SPLICE_F_NONBLOCK))
ret = -EAGAIN;
else
ret = 0;