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Additional Linux VM integration

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Added support for Solaris swapfs_minfree, and swapfs_reserve tunables.
In additional availrmem is now available and return a reasonable value
which is reasonably analogous to the Solaris meaning.  On linux we
return the sun of free and inactive pages since these are all easily
reclaimable.

All tunables are available in /proc/sys/kernel/spl/vm/* and they may
need a little adjusting once we observe the real behavior.  Some of
the defaults are mapped to similar linux counterparts, others are
straight from the OpenSolaris defaults.
This commit is contained in:
Brian Behlendorf
2009-02-05 12:26:34 -08:00
parent 36b313dacf
commit 4ab13d3b5c
7 changed files with 214 additions and 39 deletions
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config/spl-build.m4
+15 -3
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@@ -707,7 +707,7 @@ AC_DEFUN([SPL_AC_3ARGS_ON_EACH_CPU], [
])
dnl #
dnl # Distro specific first_online_pgdat symbol export.
dnl # Distro specific first_online_pgdat() symbol export.
dnl #
AC_DEFUN([SPL_AC_FIRST_ONLINE_PGDAT], [
SPL_CHECK_SYMBOL_EXPORT(
@@ -719,7 +719,7 @@ AC_DEFUN([SPL_AC_FIRST_ONLINE_PGDAT], [
])
dnl #
dnl # Distro specific next_online_pgdat symbol export.
dnl # Distro specific next_online_pgdat() symbol export.
dnl #
AC_DEFUN([SPL_AC_NEXT_ONLINE_PGDAT], [
SPL_CHECK_SYMBOL_EXPORT(
@@ -731,7 +731,7 @@ AC_DEFUN([SPL_AC_NEXT_ONLINE_PGDAT], [
])
dnl #
dnl # Distro specific next_zone symbol export.
dnl # Distro specific next_zone() symbol export.
dnl #
AC_DEFUN([SPL_AC_NEXT_ZONE], [
SPL_CHECK_SYMBOL_EXPORT(
@@ -741,3 +741,15 @@ AC_DEFUN([SPL_AC_NEXT_ZONE], [
[next_zone() is available])],
[])
])
dnl #
dnl # Distro specific get_zone_counts() symbol export.
dnl #
AC_DEFUN([SPL_AC_GET_ZONE_COUNTS], [
SPL_CHECK_SYMBOL_EXPORT(
[get_zone_counts],
[],
[AC_DEFINE(HAVE_GET_ZONE_COUNTS, 1,
[get_zone_counts() is available])],
[])
])