diff options
| author | Jan H. Schönherr <jschoenh@amazon.de> | 2018-02-23 14:06:10 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-02-28 10:18:34 +0100 |
| commit | 8f7cf88d59f0026af8d4c9fe0a14a445ba499d93 (patch) | |
| tree | 8678ef04703f71d41b9f93832cf80c1f3b7d6418 /mm | |
| parent | 807e3365895ca847749864c482d95c0ec1c89461 (diff) | |
mm: Fix devm_memremap_pages() collision handling
commit 77dd66a3c67c93ab401ccc15efff25578be281fd upstream.
If devm_memremap_pages() detects a collision while adding entries
to the radix-tree, we call pgmap_radix_release(). Unfortunately,
the function removes *all* entries for the range -- including the
entries that caused the collision in the first place.
Modify pgmap_radix_release() to take an additional argument to
indicate where to stop, so that only newly added entries are removed
from the tree.
Cc: <stable@vger.kernel.org>
Fixes: 9476df7d80df ("mm: introduce find_dev_pagemap()")
Signed-off-by: Jan H. Schönherr <jschoenh@amazon.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions