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BUF_ISLOCKED — returns the state of the lock linked to the buffer
#include <sys/param.h> #include <sys/systm.h> #include <sys/uio.h> #include <sys/bio.h> #include <sys/buf.h> int BUF_ISLOCKED(struct buf *bp);
The BUF_ISLOCKED() function returns the status of the lock linked to the buffer in relation to curthread. It can return: LK_EXCLUSIVE An exclusive lock is held by curthread. LK_EXCLOTHER An exclusive lock is held by someone other than curthread LK_SHARED A shared lock is held. 0 The lock is not held by anyone.
lockstatus(9), buf(9), BUF_LOCK(9), BUF_UNLOCK(9), lockmgr(9)
This manual page was written by Attilio Rao <attilio@FreeBSD.org>.