09 Sep, 2017
2 commits
-
interval_tree.h _is_ the generic flavor.
Link: http://lkml.kernel.org/r/20170719014603.19029-13-dave@stgolabs.net
Signed-off-by: Davidlohr Bueso
Acked-by: Peter Zijlstra (Intel)
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Allow interval trees to quickly check for overlaps to avoid unnecesary
tree lookups in interval_tree_iter_first().As of this patch, all interval tree flavors will require using a
'rb_root_cached' such that we can have the leftmost node easily
available. While most users will make use of this feature, those with
special functions (in addition to the generic insert, delete, search
calls) will avoid using the cached option as they can do funky things
with insertions -- for example, vma_interval_tree_insert_after().[jglisse@redhat.com: fix deadlock from typo vm_lock_anon_vma()]
Link: http://lkml.kernel.org/r/20170808225719.20723-1-jglisse@redhat.com
Link: http://lkml.kernel.org/r/20170719014603.19029-12-dave@stgolabs.net
Signed-off-by: Davidlohr Bueso
Signed-off-by: Jérôme Glisse
Acked-by: Christian König
Acked-by: Peter Zijlstra (Intel)
Acked-by: Doug Ledford
Acked-by: Michael S. Tsirkin
Cc: David Airlie
Cc: Jason Wang
Cc: Christian Benvenuti
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
09 Oct, 2012
1 commit
-
Update the generic interval tree code that was introduced in "mm: replace
vma prio_tree with an interval tree".Changes:
- fixed 'endpoing' typo noticed by Andrew Morton
- replaced include/linux/interval_tree_tmpl.h, which was used as a
template (including it automatically defined the interval tree
functions) with include/linux/interval_tree_generic.h, which only
defines a preprocessor macro INTERVAL_TREE_DEFINE(), which itself
defines the interval tree functions when invoked. Now that is a very
long macro which is unfortunate, but it does make the usage sites
(lib/interval_tree.c and mm/interval_tree.c) a bit nicer than previously.- make use of RB_DECLARE_CALLBACKS() in the INTERVAL_TREE_DEFINE() macro,
instead of duplicating that code in the interval tree template.- replaced vma_interval_tree_add(), which was actually handling the
nonlinear and interval tree cases, with vma_interval_tree_insert_after()
which handles only the interval tree case and has an API that is more
consistent with the other interval tree handling functions.
The nonlinear case is now handled explicitly in kernel/fork.c dup_mmap().Signed-off-by: Michel Lespinasse
Cc: Andrea Arcangeli
Cc: Rik van Riel
Cc: Peter Zijlstra
Cc: Daniel Santos
Cc: Hugh Dickins
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
