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authorKirill A. Shutemov <kirill.shutemov@linux.intel.com>2015-02-10 14:09:59 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2015-02-10 14:30:31 -0800
commit27ba0644ea9dfe6e7693abc85837b60e40583b96 (patch)
treea1e04ba5026728711bde87cb2f336d2444ee6ffe /Documentation
parent1da4b35b001481df99a6dcab12d5d39a876f7056 (diff)
rmap: drop support of non-linear mappings
We don't create non-linear mappings anymore. Let's drop code which handles them in rmap. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/cachetlb.txt8
1 files changed, 4 insertions, 4 deletions
diff --git a/Documentation/cachetlb.txt b/Documentation/cachetlb.txt
index d79b008e4a32..3f9f808b5119 100644
--- a/Documentation/cachetlb.txt
+++ b/Documentation/cachetlb.txt
@@ -317,10 +317,10 @@ maps this page at its virtual address.
about doing this.
The idea is, first at flush_dcache_page() time, if
- page->mapping->i_mmap is an empty tree and ->i_mmap_nonlinear
- an empty list, just mark the architecture private page flag bit.
- Later, in update_mmu_cache(), a check is made of this flag bit,
- and if set the flush is done and the flag bit is cleared.
+ page->mapping->i_mmap is an empty tree, just mark the architecture
+ private page flag bit. Later, in update_mmu_cache(), a check is
+ made of this flag bit, and if set the flush is done and the flag
+ bit is cleared.
IMPORTANT NOTE: It is often important, if you defer the flush,
that the actual flush occurs on the same CPU