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f2fs: avoid buggy functions

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This patch avoids to use a buggy function for now.
It needs to fix them later.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2015-05-18 11:45:15 -07:00
parent 08b95126c7
commit e19ef527aa
1 changed files with 18 additions and 0 deletions
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18
fs/f2fs/segment.c
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@ -75,6 +75,14 @@ static inline unsigned long __reverse_ffs(unsigned long word)
static unsigned long __find_rev_next_bit(const unsigned long *addr, static unsigned long __find_rev_next_bit(const unsigned long *addr,
unsigned long size, unsigned long offset) unsigned long size, unsigned long offset)
{ {
while (!f2fs_test_bit(offset, (unsigned char *)addr))
offset++;
if (offset > size)
offset = size;
return offset;
#if 0
const unsigned long *p = addr + BIT_WORD(offset); const unsigned long *p = addr + BIT_WORD(offset);
unsigned long result = offset & ~(BITS_PER_LONG - 1); unsigned long result = offset & ~(BITS_PER_LONG - 1);
unsigned long tmp; unsigned long tmp;
@ -121,11 +129,20 @@ static unsigned long __find_rev_next_bit(const unsigned long *addr,
return result + size; /* Nope. */ return result + size; /* Nope. */
found_middle: found_middle:
return result + __reverse_ffs(tmp); return result + __reverse_ffs(tmp);
#endif
} }
static unsigned long __find_rev_next_zero_bit(const unsigned long *addr, static unsigned long __find_rev_next_zero_bit(const unsigned long *addr,
unsigned long size, unsigned long offset) unsigned long size, unsigned long offset)
{ {
while (f2fs_test_bit(offset, (unsigned char *)addr))
offset++;
if (offset > size)
offset = size;
return offset;
#if 0
const unsigned long *p = addr + BIT_WORD(offset); const unsigned long *p = addr + BIT_WORD(offset);
unsigned long result = offset & ~(BITS_PER_LONG - 1); unsigned long result = offset & ~(BITS_PER_LONG - 1);
unsigned long tmp; unsigned long tmp;
@ -173,6 +190,7 @@ static unsigned long __find_rev_next_zero_bit(const unsigned long *addr,
return result + size; /* Nope. */ return result + size; /* Nope. */
found_middle: found_middle:
return result + __reverse_ffz(tmp); return result + __reverse_ffz(tmp);
#endif
} }
void register_inmem_page(struct inode *inode, struct page *page) void register_inmem_page(struct inode *inode, struct page *page)