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2 Commits

Author SHA1 Message Date
Matthew Wilcox
9f14d4f1f1 xarray: Add xa_reserve and xa_release 
This function reserves a slot in the XArray for users which need
to acquire multiple locks before storing their entry in the tree and
so cannot use a plain xa_store().

Signed-off-by: Matthew Wilcox <willy@infradead.org>
 2018-10-21 10:46:00 -04:00
Matthew Wilcox
992a8e60e3 xarray: Add documentation 
This is documentation on how to use the XArray, not details about its
internal implementation.

Signed-off-by: Matthew Wilcox <willy@infradead.org>
Acked-by: Josef Bacik <jbacik@fb.com>
 2018-10-21 10:45:57 -04:00