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Illumos does not have direct reclaim and code run inside taskq worker threads is not designed to deal with it. Allowing direct reclaim inside a worker thread can therefore deadlock. We set PF_MEMALLOC_NOIO through memalloc_noio_save() to indicate to the kernel's reclaim code that we are inside a context where memory allocations cannot be allowed to block on filesystem activity. Signed-off-by: Richard Yao <ryao@gentoo.org> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Issue zfsonlinux/zfs#1274 Issue zfsonlinux/zfs#2390 Closes #474 |
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| .. | ||
| Makefile.in | ||
| spl-atomic.c | ||
| spl-condvar.c | ||
| spl-cred.c | ||
| spl-err.c | ||
| spl-generic.c | ||
| spl-kmem-cache.c | ||
| spl-kmem.c | ||
| spl-kobj.c | ||
| spl-kstat.c | ||
| spl-mutex.c | ||
| spl-proc.c | ||
| spl-rwlock.c | ||
| spl-taskq.c | ||
| spl-thread.c | ||
| spl-tsd.c | ||
| spl-vmem.c | ||
| spl-vnode.c | ||
| spl-xdr.c | ||
| spl-zlib.c | ||