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authorJaegeuk Kim <jaegeuk@kernel.org>2015-05-18 11:45:15 -0700
committerJaegeuk Kim <jaegeuk@kernel.org>2015-06-01 16:20:52 -0700
commite19ef527aa32f057710ec842fe656bffc263b0bb (patch)
treed55ec46d0ee9490fa3ce2c245532f0001a948aef /fs/f2fs/segment.c
parent08b95126c787441e4ef572422a5237dd985147be (diff)
downloadlinux-e19ef527aa32f057710ec842fe656bffc263b0bb.tar.bz2
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.c18
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)