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tracing: Do not risk busy looping in buffer splice
authorRabin Vincent <rabin@rab.in>
Thu, 6 Nov 2014 21:26:07 +0000 (22:26 +0100)
committerSteven Rostedt <rostedt@goodmis.org>
Mon, 10 Nov 2014 21:47:31 +0000 (16:47 -0500)
commit07906da78810dce5fd35b9449358c9208c693dca
tree045b776e6ac22d844050cb6a155095732d9f40d4tree
parente30f53aad2202b5526c40c36d8eeac8bf290bde5commit | diff
tracing: Do not risk busy looping in buffer splice

If the read loop in trace_buffers_splice_read() keeps failing due to
memory allocation failures without reading even a single page then this
function will keep busy looping.

Remove the risk for that by exiting the function if memory allocation
failures are seen.

Link: http://lkml.kernel.org/r/1415309167-2373-2-git-send-email-rabin@rab.in
Signed-off-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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