p71924506
/
linux_old1
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Documentation/vm/transhuge.txt: fix trivial typos 

[akpm@linux-foundation.org: fixes per Randy]
Link: http://lkml.kernel.org/r/20170405210259.2067-1-sj38.park@gmail.com
Signed-off-by: SeongJae Park <sj38.park@gmail.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
SeongJae Park 2017-05-08 15:59:02 -07:00 committed by Linus Torvalds
parent c718a97514
commit 929f9d285a
1 changed files with 5 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
Documentation/vm/transhuge.txt
View File

@ -266,7 +266,7 @@ for each mapping.
The number of file transparent huge pages mapped to userspace is available
by reading ShmemPmdMapped and ShmemHugePages fields in /proc/meminfo.
To identify what applications are mapping file transparent huge pages, it
To identify what applications are mapping file transparent huge pages, it
is necessary to read /proc/PID/smaps and count the FileHugeMapped fields
for each mapping.
@ -292,7 +292,7 @@ thp_collapse_alloc_failed is incremented if khugepaged found a range
the allocation.
thp_file_alloc is incremented every time a file huge page is successfully
i allocated.
allocated.
thp_file_mapped is incremented every time a file huge page is mapped into
user address space.
@ -501,7 +501,7 @@ scanner can get reference to a page is get_page_unless_zero().
All tail pages have zero ->_refcount until atomic_add(). This prevents the
scanner from getting a reference to the tail page up to that point. After the
atomic_add() we don't care about the ->_refcount value. We already known how
atomic_add() we don't care about the ->_refcount value. We already known how
many references should be uncharged from the head page.
For head page get_page_unless_zero() will succeed and we don't mind. It's
@ -519,8 +519,8 @@ comes. Splitting will free up unused subpages.
Splitting the page right away is not an option due to locking context in
the place where we can detect partial unmap. It's also might be
counterproductive since in many cases partial unmap unmap happens during
exit(2) if an THP crosses VMA boundary.
counterproductive since in many cases partial unmap happens during exit(2) if
a THP crosses a VMA boundary.
Function deferred_split_huge_page() is used to queue page for splitting.
The splitting itself will happen when we get memory pressure via shrinker