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Subject[GIT PULL] XArray for 5.5

I had an oops live on stage at linux.conf.au this year, and it turned out
to be a bug in xas_find() which I can't prove isn't triggerable in the
current codebase. Then in looking for the bug, I spotted two more bugs.
The bots have had a few days to chew on this with no problems reported,
and it passes the test-suite (which now has more tests to make sure
these problems don't come back).

So I feel pretty comfortable asking you to pull this, even though it's
so late in the development cycle.

The following changes since commit 0058b0a506e40d9a2c62015fe92eb64a44d78cd9:

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net (2019-11-08 18:21:05 -0800)

are available in the Git repository at:

git://git.infradead.org/users/willy/linux-dax.git tags/xarray-5.5

for you to fetch changes up to 00ed452c210a0bc1ff3ee79e1ce6b199f00a0638:

XArray: Add xa_for_each_range (2020-01-17 22:33:37 -0500)

----------------------------------------------------------------
XArray updates for 5.5

Primarily bugfixes, mostly around handling index wrap-around correctly.
A couple of doc fixes and adding missing APIs.

----------------------------------------------------------------
Matthew Wilcox (Oracle) (7):
XArray: Fix xas_pause at ULONG_MAX
XArray: Improve documentation of search marks
XArray: Add wrappers for nested spinlocks
XArray: Fix infinite loop with entry at ULONG_MAX
XArray: Fix xa_find_after with multi-index entries
XArray: Fix xas_find returning too many entries
XArray: Add xa_for_each_range

Documentation/core-api/xarray.rst | 70 +++++++++++++++++++++--------------
include/linux/xarray.h | 45 +++++++++++++++++++---
lib/test_xarray.c | 78 ++++++++++++++++++++++++++++++++-------
lib/xarray.c | 41 ++++++++++++++------
4 files changed, 175 insertions(+), 59 deletions(-)

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