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XArray: Correct xa_store_range 

The explicit '64' should have been BITS_PER_LONG, but while looking at
this code I realised I meant to use __ffs(), not ilog2().

Signed-off-by: Matthew Wilcox <willy@infradead.org>
hifive-unleashed-5.1
Matthew Wilcox 2018-11-05 10:53:09 -05:00
parent 804dfaf01b
commit 44a4a66b61
1 changed files with 3 additions and 2 deletions
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5
lib/xarray.c
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@ -1565,8 +1565,9 @@ void *xa_store_range(struct xarray *xa, unsigned long first,
do {
xas_lock(&xas);
if (entry) {
unsigned int order = (last == ~0UL) ? 64 :
ilog2(last + 1);
unsigned int order = BITS_PER_LONG;
if (last + 1)
order = __ffs(last + 1);
xas_set_order(&xas, last, order);
xas_create(&xas);
if (xas_error(&xas))