Attilio Rao d638e093d6 - Introduce the function lockmgr_recursed() which returns true if the ... lockmgr lkp, when held in exclusive mode, is recursed - Introduce the function BUF_RECURSED() which does the same for bufobj locks based on the top of lockmgr_recursed() - Introduce the function BUF_ISLOCKED() which works like the counterpart VOP_ISLOCKED(9), showing the state of lockmgr linked with the bufobj BUF_RECURSED() and BUF_ISLOCKED() entirely replace the usage of bogus BUF_REFCNT() in a more explicative and SMP-compliant way. This allows us to axe out BUF_REFCNT() and leaving the function lockcount() totally unused in our stock kernel. Further commits will axe lockcount() as well as part of lockmgr() cleanup. KPI results, obviously, broken so further commits will update manpages and freebsd version. Tested by: kris (on UFS and NFS)		2008-01-19 17:36:23 +00:00
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ext2fs	VOP_LOCK1() (and so VOP_LOCK()) and VOP_UNLOCK() are only used in	2008-01-13 14:44:15 +00:00
reiserfs	VOP_LOCK1() (and so VOP_LOCK()) and VOP_UNLOCK() are only used in	2008-01-13 14:44:15 +00:00
xfs	- Introduce the function lockmgr_recursed() which returns true if the	2008-01-19 17:36:23 +00:00