Chunwei Chen b4ad50ac5f Use spl_fstrans_mark instead of memalloc_noio_save ... For earlier versions of the kernel with memalloc_noio_save, it only turns off __GFP_IO but leaves __GFP_FS untouched during direct reclaim. This would cause threads to direct reclaim into ZFS and cause deadlock. Instead, we should stick to using spl_fstrans_mark. Since we would explicitly turn off both __GFP_IO and __GFP_FS before allocation, it will work on every version of the kernel. This impacts kernel versions 3.9-3.17, see upstream kernel commit torvalds/linux@934f307 for reference. Signed-off-by: Chunwei Chen <david.chen@osnexus.com> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Tim Chase <tim@chase2k.com> Closes #515 Issue zfsonlinux/zfs#4111		2015-12-18 13:24:52 -08:00
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fs	Kernel header installation should respect --prefix	2014-10-28 09:31:48 -07:00
linux	Fix lockdep warning in spl_inode_{lock,unlock}	2015-12-11 16:19:47 -08:00
rpc	Kernel header installation should respect --prefix	2014-10-28 09:31:48 -07:00
sharefs	Kernel header installation should respect --prefix	2014-10-28 09:31:48 -07:00
sys	Use spl_fstrans_mark instead of memalloc_noio_save	2015-12-18 13:24:52 -08:00
util	Support parallel build trees (VPATH builds)	2015-07-17 12:53:11 -07:00
vm	Kernel header installation should respect --prefix	2014-10-28 09:31:48 -07:00
Makefile.am	Retire legacy debugging infrastructure	2014-11-19 10:35:07 -08:00
spl-ctl.h	Refresh links to web site	2013-03-04 19:09:34 -08:00
splat-ctl.h	Update code to use misc_register()/misc_deregister()	2014-10-17 15:07:28 -07:00
strings.h	Refresh links to web site	2013-03-04 19:09:34 -08:00
unistd.h	Refresh links to web site	2013-03-04 19:09:34 -08:00