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| author |   Jaegeuk Kim <jaegeuk@kernel.org> | 2015-05-18 11:45:15 -0700 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2015-06-01 16:20:52 -0700 |
| commit | e19ef527aa32f057710ec842fe656bffc263b0bb (patch) | |
| tree | d55ec46d0ee9490fa3ce2c245532f0001a948aef /fs/f2fs/segment.c | |
| parent | f2fs: add compat_ioctl to provide backward compatability (diff) | |
| download | linux-dev-e19ef527aa32f057710ec842fe656bffc263b0bb.tar.xz linux-dev-e19ef527aa32f057710ec842fe656bffc263b0bb.zip | |
f2fs: avoid buggy functions
This patch avoids to use a buggy function for now.
It needs to fix them later.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/segment.c')
| -rw-r--r-- | fs/f2fs/segment.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index 342e0f761d8f..fecf69900f94 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -75,6 +75,14 @@ static inline unsigned long __reverse_ffs(unsigned long word) static unsigned long __find_rev_next_bit(const unsigned long *addr, 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); unsigned long result = offset & ~(BITS_PER_LONG - 1); unsigned long tmp; @@ -121,11 +129,20 @@ found_first: return result + size; /* Nope. */ found_middle: return result + __reverse_ffs(tmp); +#endif } static unsigned long __find_rev_next_zero_bit(const unsigned long *addr, 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); unsigned long result = offset & ~(BITS_PER_LONG - 1); unsigned long tmp; @@ -173,6 +190,7 @@ found_first: return result + size; /* Nope. */ found_middle: return result + __reverse_ffz(tmp); +#endif } void register_inmem_page(struct inode *inode, struct page *page) |