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| author | Patrick Farrell <paf@cray.com> | 2016-06-20 20:55:35 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-06-20 21:28:39 (GMT) |
| commit | 0e5fd06ca069a8edc32a035add93112f6681dd72 (patch) | |
| tree | efdf6e7c7b0d8b2fdd751157a03d8edfe8bf5d1a /drivers/staging/nvec | |
| parent | 81ea39ecf963fe0c44b8772a19863ecb154782f6 (diff) | |
| download | linux-0e5fd06ca069a8edc32a035add93112f6681dd72.tar.xz | |
staging/lustre/llite: take trunc_sem only at vvp layer
The lli_trunc_sem is taken in 'read' mode in both
ll_page_mkwrite and vvp_io_fault_start. This can lead to a
deadlock with another thread which asks for the semaphore
in write mode between thse two read calls.
Since all users of lli_trunc_sem are in the vvp layer, we
can satisfy the requirement to exclude truncate by taking
the semaphore only in vvp_io_fault_start.
Signed-off-by: Patrick Farrell <paf@cray.com>
Reviewed-on: http://review.whamcloud.com/19315
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-7981
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-by: Andriy Skulysh <andriy.skulysh@seagate.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/nvec')
0 files changed, 0 insertions, 0 deletions