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Diffstat (limited to 'manual/memory.texi')
| -rw-r--r-- | manual/memory.texi | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/manual/memory.texi b/manual/memory.texi index 91b9d84..cbe147b 100644 --- a/manual/memory.texi +++ b/manual/memory.texi @@ -31,7 +31,7 @@ One of the most basic resources a process has available to it is memory. There are a lot of different ways systems organize memory, but in a typical one, each process has one linear virtual address space, with addresses running from zero to some huge maximum. It need not be -contiguous; i.e. not all of these addresses actually can be used to +contiguous; i.e., not all of these addresses actually can be used to store data. The virtual memory is divided into pages (4 kilobytes is typical). @@ -1065,7 +1065,7 @@ This is the total size of memory occupied by free (not in use) chunks. @item int keepcost This is the size of the top-most releasable chunk that normally -borders the end of the heap (i.e. the high end of the virtual address +borders the end of the heap (i.e., the high end of the virtual address space's data segment). @end table @@ -2407,7 +2407,7 @@ of the data segment is. @cindex paging You can tell the system to associate a particular virtual memory page -with a real page frame and keep it that way --- i.e. cause the page to +with a real page frame and keep it that way --- i.e., cause the page to be paged in if it isn't already and mark it so it will never be paged out and consequently will never cause a page fault. This is called @dfn{locking} a page. @@ -2467,7 +2467,7 @@ A memory lock is associated with a virtual page, not a real frame. The paging rule is: If a frame backs at least one locked page, don't page it out. -Memory locks do not stack. I.e. you can't lock a particular page twice +Memory locks do not stack. I.e., you can't lock a particular page twice so that it has to be unlocked twice before it is truly unlocked. It is either locked or it isn't. |