diff options
| author | Patrick Farrell <[email protected]> | 2016-06-20 16:55:35 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <[email protected]> | 2016-06-20 14:28:39 -0700 |
| commit | 0e5fd06ca069a8edc32a035add93112f6681dd72 (patch) | |
| tree | efdf6e7c7b0d8b2fdd751157a03d8edfe8bf5d1a /tools/perf/scripts/python | |
| parent | 81ea39ecf963fe0c44b8772a19863ecb154782f6 (diff) | |
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 <[email protected]>
Reviewed-on: http://review.whamcloud.com/19315
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-7981
Reviewed-by: Jinshan Xiong <[email protected]>
Reviewed-by: Andriy Skulysh <[email protected]>
Signed-off-by: Oleg Drokin <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions