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| author | Attilio Rao <attilio@FreeBSD.org> | 2008-04-07 14:46:38 +0000 |
|---|---|---|
| committer | Attilio Rao <attilio@FreeBSD.org> | 2008-04-07 14:46:38 +0000 |
| commit | e0f62984c1f53dfc174a2958ab23ef3c7c52f5c1 (patch) | |
| tree | b6a3688122ffa2d58f1113be86a4af4d90cc2b52 /sys/kern/kern_lock.c | |
| parent | fc9299dd1b0626f079881e3005a32ef52886b905 (diff) | |
| download | src-e0f62984c1f53dfc174a2958ab23ef3c7c52f5c1.tar.gz src-e0f62984c1f53dfc174a2958ab23ef3c7c52f5c1.zip | |
- Use a different encoding for lockmgr options: make them encoded by
bit in order to allow per-bit checks on the options flag, in particular
in the consumers code [1]
- Re-enable the check against TDP_DEADLKTREAT as the anti-waiters
starvation patch allows exclusive waiters to override new shared
requests.
[1] Requested by: pjd, jeff
Notes
Notes:
svn path=/head/; revision=177982
Diffstat (limited to 'sys/kern/kern_lock.c')
| -rw-r--r-- | sys/kern/kern_lock.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/kern/kern_lock.c b/sys/kern/kern_lock.c index 93c262b44c33..7722c15c1c5f 100644 --- a/sys/kern/kern_lock.c +++ b/sys/kern/kern_lock.c @@ -88,7 +88,7 @@ CTASSERT(((LK_CANRECURSE | LK_NOSHARE) & LO_CLASSFLAGS) == ((x) & LK_NOWAIT) #define LK_CAN_SHARE(x) \ (((x) & LK_SHARE) && (((x) & LK_EXCLUSIVE_WAITERS) == 0 || \ - curthread->td_lk_slocks)) + curthread->td_lk_slocks || (curthread->td_pflags & TDP_DEADLKTREAT))) #define lockmgr_disowned(lk) \ (((lk)->lk_lock & ~(LK_FLAGMASK & ~LK_SHARE)) == LK_KERNPROC) |