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f9a9aea126
Many long-running ZFS ioctls lock the spa_namespace_lock, forcing concurrent ioctls to sleep for the mutex. Previously, the only option is to call mutex_enter() which sleeps uninterruptibly. This is a usability issue for sysadmins, for example, if the admin runs `zpool status` while a slow `zpool import` is ongoing, the admin's shell will be locked in uninterruptible sleep for a long time. This patch resolves this admin usability issue by introducing mutex_enter_interruptible() which sleeps interruptibly while waiting to acquire a lock. It is implemented for both Linux and FreeBSD. The ZFS_IOC_POOL_CONFIGS ioctl, used by `zpool status`, is changed to use this new macro so that the command can be interrupted if it is issued during a concurrent `zpool import` (or other long-running operation). Reviewed-by: Tony Hutter <hutter2@llnl.gov> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Thomas Bertschinger <bertschinger@lanl.gov> Closes #15360 |
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| .. | ||
| ia32 | ||
| acl.h | ||
| atomic.h | ||
| byteorder.h | ||
| callb.h | ||
| callo.h | ||
| cmn_err.h | ||
| condvar.h | ||
| cred.h | ||
| ctype.h | ||
| debug.h | ||
| disp.h | ||
| dkio.h | ||
| errno.h | ||
| fcntl.h | ||
| file.h | ||
| inttypes.h | ||
| isa_defs.h | ||
| kmem_cache.h | ||
| kmem.h | ||
| kstat.h | ||
| list.h | ||
| misc.h | ||
| mod_os.h | ||
| mutex.h | ||
| param.h | ||
| proc.h | ||
| processor.h | ||
| procfs_list.h | ||
| random.h | ||
| rwlock.h | ||
| shrinker.h | ||
| sid.h | ||
| signal.h | ||
| simd.h | ||
| stat.h | ||
| string.h | ||
| sunddi.h | ||
| sysmacros.h | ||
| systeminfo.h | ||
| taskq.h | ||
| thread.h | ||
| time.h | ||
| timer.h | ||
| trace_spl.h | ||
| trace_taskq.h | ||
| trace.h | ||
| tsd.h | ||
| types32.h | ||
| types.h | ||
| uio.h | ||
| user.h | ||
| vfs.h | ||
| vmem.h | ||
| vmsystm.h | ||
| vnode.h | ||
| wait.h | ||
| wmsum.h | ||
| zmod.h | ||
| zone.h | ||