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XArray: Add private interface for workingset node deletion

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Move the tricky bits of dealing with the XArray from the workingset
code to the XArray.  Make it clear in the documentation that this is a
private interface, and only export it for the benefit of the test suite.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
This commit is contained in:
Matthew Wilcox (Oracle) 2020-08-18 09:05:56 -04:00
parent 8446466c9d
commit f82cd2f0b5
4 changed files with 28 additions and 17 deletions
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2
include/linux/xarray.h
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@ -1286,6 +1286,8 @@ static inline bool xa_is_advanced(const void *entry)
*/
typedef void (*xa_update_node_t)(struct xa_node *node);
void xa_delete_node(struct xa_node *, xa_update_node_t);
/*
* The xa_state is opaque to its users. It contains various different pieces
* of state involved in the current operation on the XArray. It should be