Ubuntu-focal-kernel/Documentation/core-api
Matthew Wilcox (Oracle) 5a7c7afbd3 XArray: add xas_split
BugLink: https://bugs.launchpad.net/bugs/1932957

commit 8fc75643c5 upstream

In order to use multi-index entries for huge pages in the page cache, we
need to be able to split a multi-index entry (eg if a file is truncated in
the middle of a huge page entry).  This version does not support splitting
more than one level of the tree at a time.  This is an acceptable
limitation for the page cache as we do not expect to support order-12
pages in the near future.

[akpm@linux-foundation.org: export xas_split_alloc() to modules]
[willy@infradead.org: fix xarray split]
  Link: https://lkml.kernel.org/r/20200910175450.GV6583@casper.infradead.org
[willy@infradead.org: fix xarray]
  Link: https://lkml.kernel.org/r/20201001233943.GW20115@casper.infradead.org

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: "Kirill A . Shutemov" <kirill@shutemov.name>
Cc: Qian Cai <cai@lca.pw>
Cc: Song Liu <songliubraving@fb.com>
Link: https://lkml.kernel.org/r/20200903183029.14930-3-willy@infradead.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Kelsey Skunberg <kelsey.skunberg@canonical.com>
2021-07-15 19:27:10 +02:00
..
assoc_array.rst
atomic_ops.rst
boot-time-mm.rst
cachetlb.rst
circular-buffers.rst doc: Remove ".vnet" from paulmck email addresses 2019-05-28 09:02:57 -07:00
cpu_hotplug.rst
debug-objects.rst
errseq.rst
gcc-plugins.rst docs: move gcc_plugins.txt to core-api and rename to .rst 2019-07-15 09:20:27 -03:00
genalloc.rst
generic-radix-tree.rst
genericirq.rst
gfp_mask-from-fs-io.rst
idr.rst
index.rst doc: move namespaces.rst from kbuild/ to core-api/ 2019-10-08 17:40:01 +02:00
kernel-api.rst kernel-doc: core-api: include string.h into core-api 2019-09-25 17:51:39 -07:00
librs.rst
local_ops.rst
memory-allocation.rst mm, sl[aou]b: guarantee natural alignment for kmalloc(power-of-two) 2019-10-07 15:47:20 -07:00
memory-hotplug.rst
mm-api.rst
packing.rst docs: packing: move it to core-api book and adjust markups 2019-07-31 13:30:01 -06:00
printk-formats.rst UBUNTU: SAUCE: s390: kernel message catalog 2019-11-25 14:56:29 +01:00
protection-keys.rst docs: move protection-keys.rst to the core-api book 2019-06-08 13:42:12 -06:00
refcount-vs-atomic.rst
symbol-namespaces.rst doc: move namespaces.rst from kbuild/ to core-api/ 2019-10-08 17:40:01 +02:00
timekeeping.rst It's been a relatively busy cycle for docs: 2019-07-09 12:34:26 -07:00
tracepoint.rst
workqueue.rst
xarray.rst XArray: add xas_split 2021-07-15 19:27:10 +02:00