cvs commit: src/sys/sys mount.h src/sys/kern vfs_mount.c

[Konstantin Belousov]

kib         2006-10-03 10:47:04 UTC

  FreeBSD src repository

  Modified files:
    sys/sys              mount.h 
    sys/kern             vfs_mount.c 
  Log:
  Fix the remaining race in the revs. 1.232, 1,233 that could occur during
  unmount when mp structure is reused while waiting for coveredvp lock.
  Introduce struct mount generation count, increment it on each reuse and
  compare the generations before and after obtaining the coveredvp lock.
  
  Reviewed by:    tegge, pjd
  Approved by:    pjd (mentor)
  MFC after:      2 weeks
  
  Revision  Changes    Path
  1.240     +5 -1      src/sys/kern/vfs_mount.c
  1.215     +1 -0      src/sys/sys/mount.h