diff options
| author | Chunwei Chen <[email protected]> | 2016-10-26 00:32:23 -0400 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2016-11-29 14:34:33 -0800 |
| commit | 982957483450d53683681f456d1c84cfeb56afad (patch) | |
| tree | 6efbe72e9a2b57474e855dae9d74377443bc9f27 /lib/libspl/include/sys | |
| parent | 4f60152910c6bbc1c7975409f852af7ef11c7007 (diff) | |
ABD optimized page allocation code
* Convert ABD to use the Linux Kernel scatterlist implementation
instead of the hand rolled one from illumos.
* Scatter ABDs are preferentially populated with higher order
compound pages from a single zone. Allocation size is
progressively decreased until it can be satisfied without
performing reclaim or compaction.
* An alternate page allocator is provided for kernels older
than 3.6 and for CONFIG_HIGHMEM systems. This allocator
is designed as a fallback for maximum compatibility.
* Extended abdstats to provide visibility in the the allocator.
* Add cached value for PAGESIZE in userspace.
Contributions-by:
Chunwei Chen <[email protected]>
Gvozden Neskovic <[email protected]>
Jinshan Xiong <[email protected]>
Isaac Huang <[email protected]>
David Quigley <[email protected]>
Brian Behlendorf <[email protected]>
Diffstat (limited to 'lib/libspl/include/sys')
| -rw-r--r-- | lib/libspl/include/sys/param.h | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/lib/libspl/include/sys/param.h b/lib/libspl/include/sys/param.h index 9f362dd8b..c22d508f9 100644 --- a/lib/libspl/include/sys/param.h +++ b/lib/libspl/include/sys/param.h @@ -57,8 +57,11 @@ #define MAXUID UINT32_MAX /* max user id */ #define MAXPROJID MAXUID /* max project id */ -#ifndef PAGESIZE -#define PAGESIZE (sysconf(_SC_PAGESIZE)) +#ifdef PAGESIZE +#undef PAGESIZE #endif /* PAGESIZE */ +extern size_t spl_pagesize(void); +#define PAGESIZE (spl_pagesize()) + #endif |