SIMPLE SOLUTIONS

BUF_ISLOCKED(9FREEBSD) - man page online | system kernel interfaces

Returns the state of the lock linked to the buffer.

Chapter
January 22, 2008
BUF_ISLOCKED(9)                   BSD Kernel Developer's Manual                   BUF_ISLOCKED(9)

NAME BUF_ISLOCKED — returns the state of the lock linked to the buffer
SYNOPSIS #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);
DESCRIPTION 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.
SEE ALSO lockstatus(9), buf(9), BUF_LOCK(9), BUF_UNLOCK(9), lockmgr(9)
AUTHORS This manual page was written by Attilio Rao <@FreeBSD.org>.
BSD January 22, 2008 BSD
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BUF_ISLOCKED(9freebsd) referred by
refer to buf(9freebsd) | BUF_LOCK(9freebsd) | BUF_UNLOCK(9freebsd) | lockmgr(9freebsd) | lockstatus(9freebsd)