net/9p: Switch to wait_event_killable()

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Because userspace gets Very Unhappy when calls like stat() and execve()
return -EINTR on 9p filesystem mounts. For instance, when bash is
looking in PATH for things to execute and some SIGCHLD interrupts
stat(), bash can throw a spurious 'command not found' since it doesn't
retry the stat().

In practice, hitting the problem is rare and needs a really
slow/bogged down 9p server.

Cc: stable@vger.kernel.org
Signed-off-by: Tuomas Tynkkynen <tuomas@tuxera.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

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Tuomas Tynkkynen 2017-09-06 17:59:08 +03:00 • committed by Al Viro

parent 8ee0316315

commit 9523feac27

3 changed files with 9 additions and 11 deletions

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3

net/9p/client.c

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13

net/9p/trans_virtio.c

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4

net/9p/trans_xen.c

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