Matthew Wilcox b0606fed6e XArray: Honour reserved entries in xa_insert ...

xa_insert() should treat reserved entries as occupied, not as available.
Also, it should treat requests to insert a NULL pointer as a request
to reserve the slot.  Add xa_insert_bh() and xa_insert_irq() for
completeness.

Signed-off-by: Matthew Wilcox <willy@infradead.org>

2019-01-06 22:12:58 -05:00

52 KiB

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