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| author | Ben Widawsky <bwidawsk@FreeBSD.org> | 2018-11-21 04:34:18 +0000 |
|---|---|---|
| committer | Ben Widawsky <bwidawsk@FreeBSD.org> | 2018-11-21 04:34:18 +0000 |
| commit | f82dd310bb7595df632c154e0a9f5645cb414db6 (patch) | |
| tree | 53278414b05ec2c2c6830ddea9f8684c03b2fb2c /sys/compat | |
| parent | 14b520eaa25e291e54a19cf0b680ab909c671886 (diff) | |
| download | src-f82dd310bb7595df632c154e0a9f5645cb414db6.tar.gz src-f82dd310bb7595df632c154e0a9f5645cb414db6.zip | |
linuxkpi: Use pageproc instead of vmproc
According to markj@:
pageproc contains the page daemon and laundry threads, which are
responsible for managing the LRU page queues and writing back dirty
pages. vmproc's main task is to swap out kernel stacks when the system
is under memory pressure, and swap them back in when necessary. It's a
somewhat legacy component of the system and isn't required. You can
build a kernel without it by specifying "options NO_SWAPPING" (which is
a somewhat misleading name), in which vm_swapout_dummy.c is compiled
instead of vm_swapout.c.
Based on this, we want pageproc to emulate kswapd, not vmproc.
Reviewed by: markj
Differential Revision: https://reviews.freebsd.org/D18061
Notes
Notes:
svn path=/head/; revision=340720
Diffstat (limited to 'sys/compat')
| -rw-r--r-- | sys/compat/linuxkpi/common/include/linux/swap.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/compat/linuxkpi/common/include/linux/swap.h b/sys/compat/linuxkpi/common/include/linux/swap.h index e24a8a34f0cf..33f8de4721a4 100644 --- a/sys/compat/linuxkpi/common/include/linux/swap.h +++ b/sys/compat/linuxkpi/common/include/linux/swap.h @@ -45,7 +45,8 @@ get_nr_swap_pages(void) static inline int current_is_kswapd(void) { - return vm_curproc_is_vmproc(); + + return (curproc == pageproc); } #endif |