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| author | Johannes Weiner <hannes@cmpxchg.org> | 2016-12-12 16:43:46 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-12-12 18:55:08 -0800 |
| commit | f4b109c6dad54257eca837f9dd16a23f2eeab832 (patch) | |
| tree | ab2ceb69c33346aeaa8e1420d04fad8623118e26 /mm/shmem.c | |
| parent | 6d75f366b9242f9b17ed7d0b0604d7460f818f21 (diff) | |
| download | linux-f4b109c6dad54257eca837f9dd16a23f2eeab832.tar.gz linux-f4b109c6dad54257eca837f9dd16a23f2eeab832.tar.xz | |
lib: radix-tree: add entry deletion support to __radix_tree_replace()
Page cache shadow entry handling will be a lot simpler when it can use a
single generic replacement function for pages, shadow entries, and
emptying slots.
Make __radix_tree_replace() properly account insertions and deletions in
node->count and garbage collect nodes as they become empty. Then
re-implement radix_tree_delete() on top of it.
Link: http://lkml.kernel.org/r/20161117193058.GC23430@cmpxchg.org
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Matthew Wilcox <mawilcox@linuxonhyperv.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/shmem.c')
0 files changed, 0 insertions, 0 deletions