From e19ef527aa32f057710ec842fe656bffc263b0bb Mon Sep 17 00:00:00 2001 From: Jaegeuk Kim Date: Mon, 18 May 2015 11:45:15 -0700 Subject: [PATCH] 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 --- fs/f2fs/segment.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) 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) -- 2.39.2