s390/bitops: fix comment
Fix some numbers in the comments describing the layout of the bit maps. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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@ -13,9 +13,9 @@
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*
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* The bitop functions are defined to work on unsigned longs, so for an
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* s390x system the bits end up numbered:
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* |63..............0|127............64|191...........128|255...........196|
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* |63..............0|127............64|191...........128|255...........192|
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* and on s390:
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* |31.....0|63....31|95....64|127...96|159..128|191..160|223..192|255..224|
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* |31.....0|63....32|95....64|127...96|159..128|191..160|223..192|255..224|
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*
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* There are a few little-endian macros used mostly for filesystem
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* bitmaps, these work on similar bit arrays layouts, but
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@ -30,7 +30,7 @@
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* on an s390x system the bits are numbered:
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* |0..............63|64............127|128...........191|192...........255|
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* and on s390:
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* |0.....31|31....63|64....95|96...127|128..159|160..191|192..223|224..255|
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* |0.....31|32....63|64....95|96...127|128..159|160..191|192..223|224..255|
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*
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* The main difference is that bit 0-63 (64b) or 0-31 (32b) in the bit
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* number field needs to be reversed compared to the LSB0 encoded bit
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@ -304,7 +304,7 @@ static inline int test_bit(unsigned long nr, const volatile unsigned long *ptr)
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* On an s390x system the bits are numbered:
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* |0..............63|64............127|128...........191|192...........255|
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* and on s390:
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* |0.....31|31....63|64....95|96...127|128..159|160..191|192..223|224..255|
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* |0.....31|32....63|64....95|96...127|128..159|160..191|192..223|224..255|
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*/
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unsigned long find_first_bit_inv(const unsigned long *addr, unsigned long size);
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unsigned long find_next_bit_inv(const unsigned long *addr, unsigned long size,
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@ -4,7 +4,7 @@
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* On s390x the bits are numbered:
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* |0..............63|64............127|128...........191|192...........255|
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* and on s390:
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* |0.....31|31....63|64....95|96...127|128..159|160..191|192..223|224..255|
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* |0.....31|32....63|64....95|96...127|128..159|160..191|192..223|224..255|
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*
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* The reason for this bit numbering is the fact that the hardware sets bits
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* in a bitmap starting at bit 0 (MSB) and we don't want to scan the bitmap
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