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authorOleg Nesterov2012-08-06 14:49:56 +0200
committerOleg Nesterov2012-08-28 18:21:17 +0200
commit5e5be71ab3fd8bd2076606923791ece1634c199c (patch)
tree3bfa62096792ec812d8b4e3aa3caa6b5662384da /kernel/mutex-debug.h
parentf1a45d023193f7d8e55e384090b645d609325393 (diff)
uprobes: Change uprobe_mmap() to ignore the errors but check fatal_signal_pending()
Once install_breakpoint() fails uprobe_mmap() "ignores" all other uprobes and returns the error. It was never really needed to to stop after the first error, and in fact it was always wrong at least in -ENOTSUPP case. Change uprobe_mmap() to ignore the errors and always return 0. This is not what we want in the long term, but until we teach the callers to handle the failure it would be better to remove the pointless complications. And this doesn't look too bad, the only "reasonable" error is ENOMEM but in this case the caller should be oom-killed in the likely case or the system has more serious problems. However it makes sense to stop if fatal_signal_pending() == T. In particular this helps if the task was oom-killed. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Acked-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Diffstat (limited to 'kernel/mutex-debug.h')
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