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Linux 3.11 compat: Replace num_physpages with totalram_pages

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num_physpages was removed by
torvalds/linux@cfa11e08ed, so lets replace
it with totalram_pages.

This is a bug fix as much as it is a compatibility fix because
num_physpages did not reflect the number of pages actually available to
the kernel:

http://lkml.indiana.edu/hypermail/linux/kernel/0908.2/01001.html

Also, there are known issues with memory calculations when ZFS is in a
Xen dom0. There is a chance that using totalram_pages could resolve
them. This conjecture is untested at the time of writing.

Signed-off-by: Richard Yao <ryao@gentoo.org>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #273
This commit is contained in:
Richard Yao
2013-08-07 04:50:04 -04:00
committed by Brian Behlendorf
parent 0b15402db3
commit ba06298072
2 changed files with 4 additions and 3 deletions
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include/sys/vmsystm.h
+1 -1
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@@ -41,7 +41,7 @@
*/
#define membar_producer() smp_wmb()
#define physmem num_physpages
#define physmem totalram_pages
#define freemem nr_free_pages()
#define availrmem spl_kmem_availrmem()