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Btrfs: remove some no-op casts

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We cast 0 to a u8 but then because of type promotion, it's immediately
cast to int back to int before we do a bitwise negate.  The cast doesn't
matter in this case, the code works as intended.  It causes a static
checker warning though so let's remove it.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Dan Carpenter 2016-10-12 11:33:21 +03:00 committed by David Sterba
parent dd4b857aab
commit 9c894696f5
1 changed files with 4 additions and 4 deletions
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8
fs/btrfs/extent_io.c
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@ -5569,7 +5569,7 @@ void le_bitmap_set(u8 *map, unsigned int start, int len)
*p |= mask_to_set; *p |= mask_to_set;
len -= bits_to_set; len -= bits_to_set;
bits_to_set = BITS_PER_BYTE; bits_to_set = BITS_PER_BYTE;
mask_to_set = ~(u8)0; mask_to_set = ~0;
p++; p++;
} }
if (len) { if (len) {
@ -5589,7 +5589,7 @@ void le_bitmap_clear(u8 *map, unsigned int start, int len)
*p &= ~mask_to_clear; *p &= ~mask_to_clear;
len -= bits_to_clear; len -= bits_to_clear;
bits_to_clear = BITS_PER_BYTE; bits_to_clear = BITS_PER_BYTE;
mask_to_clear = ~(u8)0; mask_to_clear = ~0;
p++; p++;
} }
if (len) { if (len) {
@ -5679,7 +5679,7 @@ void extent_buffer_bitmap_set(struct extent_buffer *eb, unsigned long start,
kaddr[offset] |= mask_to_set; kaddr[offset] |= mask_to_set;
len -= bits_to_set; len -= bits_to_set;
bits_to_set = BITS_PER_BYTE; bits_to_set = BITS_PER_BYTE;
mask_to_set = ~(u8)0; mask_to_set = ~0;
if (++offset >= PAGE_SIZE && len > 0) { if (++offset >= PAGE_SIZE && len > 0) {
offset = 0; offset = 0;
page = eb->pages[++i]; page = eb->pages[++i];
@ -5721,7 +5721,7 @@ void extent_buffer_bitmap_clear(struct extent_buffer *eb, unsigned long start,
kaddr[offset] &= ~mask_to_clear; kaddr[offset] &= ~mask_to_clear;
len -= bits_to_clear; len -= bits_to_clear;
bits_to_clear = BITS_PER_BYTE; bits_to_clear = BITS_PER_BYTE;
mask_to_clear = ~(u8)0; mask_to_clear = ~0;
if (++offset >= PAGE_SIZE && len > 0) { if (++offset >= PAGE_SIZE && len > 0) {
offset = 0; offset = 0;
page = eb->pages[++i]; page = eb->pages[++i];