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| author | Alexander Aring <aahringo@redhat.com> | 2021-07-16 16:22:35 -0400 |
|---|---|---|
| committer | David Teigland <teigland@redhat.com> | 2021-07-19 11:53:43 -0500 |
| commit | d921a23f3e1a703875db436cc7cdb4404cf1565f (patch) | |
| tree | 7f4a7a8c466358efb26abdc5b21d0e9480b61ce3 /fs/dlm/lockspace.c | |
| parent | feb704bd17786c8ff52a49d7759b8ee4f3a5aaac (diff) | |
| download | linux-d921a23f3e1a703875db436cc7cdb4404cf1565f.tar.gz | |
fs: dlm: use READ_ONCE for config var
This patch will use READ_ONCE to signal the compiler to read this
variable only one time. If we don't do that it could be that the
compiler read this value more than one time, because some optimizations,
from the configure data which might can be changed during this time.
Signed-off-by: Alexander Aring <aahringo@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>
Diffstat (limited to 'fs/dlm/lockspace.c')
| -rw-r--r-- | fs/dlm/lockspace.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/dlm/lockspace.c b/fs/dlm/lockspace.c index d71aba8c3e64b9..23c2d7308050f6 100644 --- a/fs/dlm/lockspace.c +++ b/fs/dlm/lockspace.c @@ -498,7 +498,7 @@ static int new_lockspace(const char *name, const char *cluster, ls->ls_exflags = (flags & ~(DLM_LSFL_TIMEWARN | DLM_LSFL_FS | DLM_LSFL_NEWEXCL)); - size = dlm_config.ci_rsbtbl_size; + size = READ_ONCE(dlm_config.ci_rsbtbl_size); ls->ls_rsbtbl_size = size; ls->ls_rsbtbl = vmalloc(array_size(size, sizeof(struct dlm_rsbtable))); |