diff options
| author | Jan H. Schönherr <jschoenh@amazon.de> | 2018-01-19 16:26:33 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-09-15 09:45:35 +0200 |
| commit | 801fc191bb15655f7e694ba611ee02189f323291 (patch) | |
| tree | 903f603ef5ae14593c66db1566e90e135dc7474e /net/can | |
| parent | 1508043c32a9dfe4af214eb712ab4b5b33158f27 (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: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/can')
0 files changed, 0 insertions, 0 deletions