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| author | David Jeffery <djeffery@redhat.com> | 2014-08-05 11:19:42 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-12-06 15:55:40 -0800 |
| commit | e9aa2c508aa6f9e5538de625b421d85c3d5cd199 (patch) | |
| tree | 91c1ac15e71c303cdd460195274f4142aa129df8 /mm/balloon_compaction.c | |
| parent | 28b0107f54d780d3e6b193bf5d3d39b57fa0e629 (diff) | |
| download | lwn-e9aa2c508aa6f9e5538de625b421d85c3d5cd199.tar.gz lwn-e9aa2c508aa6f9e5538de625b421d85c3d5cd199.zip | |
nfs: Don't busy-wait on SIGKILL in __nfs_iocounter_wait
commit 92a56555bd576c61b27a5cab9f38a33a1e9a1df5 upstream.
If a SIGKILL is sent to a task waiting in __nfs_iocounter_wait,
it will busy-wait or soft lockup in its while loop.
nfs_wait_bit_killable won't sleep, and the loop won't exit on
the error return.
Stop the busy-wait by breaking out of the loop when
nfs_wait_bit_killable returns an error.
Signed-off-by: David Jeffery <djeffery@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
[ kamal: backport to 3.13-stable: context ]
Cc: Moritz Mühlenhoff <muehlenhoff@univention.de>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'mm/balloon_compaction.c')
0 files changed, 0 insertions, 0 deletions