Hello Brian,
Is this already merged in Linux? I guess not, as I've seen a patch of
yous for the kernel, right?
Thanks,
Alex
On 3/23/21 7:25 PM, Brian Geffon wrote:
mremap(2) now supports MREMAP_DONTUNMAP with mapping types other
than private anonymous.
Signed-off-by: Brian Geffon <bgeffon@xxxxxxxxxx>
---
man2/mremap.2 | 13 ++-----------
1 file changed, 2 insertions(+), 11 deletions(-)
diff --git a/man2/mremap.2 b/man2/mremap.2
index 3ed0c0c0a..72acbc111 100644
--- a/man2/mremap.2
+++ b/man2/mremap.2
@@ -118,16 +118,6 @@ This flag, which must be used in conjunction with
remaps a mapping to a new address but does not unmap the mapping at
.IR old_address .
.IP
-The
-.B MREMAP_DONTUNMAP
-flag can be used only with private anonymous mappings
-(see the description of
-.BR MAP_PRIVATE
-and
-.BR MAP_ANONYMOUS
-in
-.BR mmap (2)).
-.IP
After completion,
any access to the range specified by
.IR old_address
@@ -227,7 +217,8 @@ was specified, but one or more pages in the range specified by
.IR old_address
and
.IR old_size
-were not private anonymous;
+were part of a special mapping or the mapping is one that
+does not support merging or expanding;
.IP *
.B MREMAP_DONTUNMAP
was specified and
--
Alejandro Colomar
Linux man-pages comaintainer; https://www.kernel.org/doc/man-pages/
http://www.alejandro-colomar.es/
