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Add lock types RW_NOLOCKDEP and MUTEX_NOLOCKDEP

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Both lock types were introduced in SPL to allow some locks to be
taken/released with linux lockdep turned off.  See SPL commit for
details.

Add the new lock types to zfs_context.h to allow user space compilation.

Depends on SPL commit 692ae8d
SPL pull request refs/pull/480/head

Signed-off-by: Olaf Faaland <faaland1@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #3895
This commit is contained in:
Olaf Faaland 2015-11-06 09:38:27 -08:00 committed by Brian Behlendorf
parent 76d5bf196c
commit e0553a74ad
1 changed files with 2 additions and 0 deletions
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2
include/sys/zfs_context.h
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@ -274,6 +274,7 @@ typedef struct kmutex {
} kmutex_t;
#define MUTEX_DEFAULT 0
#define MUTEX_NOLOCKDEP MUTEX_DEFAULT
#define MUTEX_HELD(m) ((m)->m_owner == curthread)
#define MUTEX_NOT_HELD(m) (!MUTEX_HELD(m))
@ -305,6 +306,7 @@ typedef int krw_t;
#define RW_READER 0
#define RW_WRITER 1
#define RW_DEFAULT RW_READER
#define RW_NOLOCKDEP RW_READER
#define RW_READ_HELD(x) ((x)->rw_readers > 0)
#define RW_WRITE_HELD(x) ((x)->rw_wr_owner == curthread)