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[PATCH] perform maintenance on Documentation/vm/hugetlbpage.txt

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Updates to Documentation/vm/hugetlbpage.txt:

- there's no need to select HUGETLB_PAGE manually and it's no longer
  under the processor menu.  Update the text accordingly.

- fix typos and trim trailing whitespace.

Signed-Off-By: Muli Ben-Yehuda <mulix@mulix.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Muli Ben-Yehuda 2005-11-07 00:59:42 -08:00 committed by Linus Torvalds
parent 385fd4c59d
commit 5c7ad5104d
1 changed files with 13 additions and 12 deletions
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Documentation/vm/hugetlbpage.txt
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@ -13,9 +13,10 @@ This optimization is more critical now as bigger and bigger physical memories
Users can use the huge page support in Linux kernel by either using the mmap Users can use the huge page support in Linux kernel by either using the mmap
system call or standard SYSv shared memory system calls (shmget, shmat). system call or standard SYSv shared memory system calls (shmget, shmat).
First the Linux kernel needs to be built with CONFIG_HUGETLB_PAGE (present First the Linux kernel needs to be built with the CONFIG_HUGETLBFS
under Processor types and feature) and CONFIG_HUGETLBFS (present under file (present under "File systems") and CONFIG_HUGETLB_PAGE (selected
system option on config menu) config options. automatically when CONFIG_HUGETLBFS is selected) configuration
options.
The kernel built with hugepage support should show the number of configured The kernel built with hugepage support should show the number of configured
hugepages in the system by running the "cat /proc/meminfo" command. hugepages in the system by running the "cat /proc/meminfo" command.
@ -39,7 +40,7 @@ in the kernel.
/proc/sys/vm/nr_hugepages indicates the current number of configured hugetlb /proc/sys/vm/nr_hugepages indicates the current number of configured hugetlb
pages in the kernel. Super user can dynamically request more (or free some pages in the kernel. Super user can dynamically request more (or free some
pre-configured) hugepages. pre-configured) hugepages.
The allocation( or deallocation) of hugetlb pages is posible only if there are The allocation (or deallocation) of hugetlb pages is possible only if there are
enough physically contiguous free pages in system (freeing of hugepages is enough physically contiguous free pages in system (freeing of hugepages is
possible only if there are enough hugetlb pages free that can be transfered possible only if there are enough hugetlb pages free that can be transfered
back to regular memory pool). back to regular memory pool).