delphij 2007-08-03 06:24:31 UTC
FreeBSD src repository
Modified files:
sys/fs/tmpfs tmpfs.h tmpfs_subr.c
Log:
MFp4 - Refine locking to eliminate some potential race/panics:
- Copy before testing a pointer. This closes a race window.
- Use msleep with the node interlock instead of tsleep.
- Do proper locking around access to tn_vpstate.
- Assert vnode VOP lock for dir_{atta,de}tach to capture
inconsistent locking.
Suggested by: kib
Submitted by: delphij
Reviewed by: Howard Su
Approved by: re (tmpfs blanket)
Revision Changes Path
1.9 +1 -0 src/sys/fs/tmpfs/tmpfs.h
1.10 +21 -21 src/sys/fs/tmpfs/tmpfs_subr.c