cvs commit: src/sys/ufs/ufs quota.h ufs_quota.c src/sys/ufs/ffs ffs_vfsops.c

[Rong-en Fan]

On 3/14/07, Konstantin Belousov <kib at freebsd.org> wrote:
> kib         2007-03-14 08:54:08 UTC
>
>   FreeBSD src repository
>
>   Modified files:
>     sys/ufs/ufs          quota.h ufs_quota.c
>     sys/ufs/ffs          ffs_vfsops.c
>   Log:
>   Implement fine-grained locking for UFS quotas.
>

Thank you! When will we see it in RELENG_6?

Regards,
Rong-En Fan

>   Each struct dquot gets dq_lock mutex to protect dq_flags and to interlock
>   with DQ_LOCK. qhash, dqfreelist and dq.dq_cnt are protected by global
>   dqhlock mutex.
>
>   i_dquot array for inode is protected by lockmgr' vnode lock, corresponding
>   assert added to the dqget(). Access to struct ufsmount quota-related fields
>   (um_quotas and um_qflags) is protected by um_lock.
>
>   Tested by:      Peter Holm
>   Reviewed by:    tegge
>   Approved by:    re (kensmith)
>
>   This work were not possible without enormous amount of help given by
>   Tor Egge and Peter Holm. Tor reviewed each version of patch, pointed out
>   numerous errors and provided invaluable suggestions. Peter did tireless
>   testing of the patch as it was developed.
>
>   Revision  Changes    Path
>   1.327     +0 -2      src/sys/ufs/ffs/ffs_vfsops.c
>   1.30      +24 -4     src/sys/ufs/ufs/quota.h
>   1.93      +469 -136  src/sys/ufs/ufs/ufs_quota.c
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