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| author | Andrew Morton <akpm@osdl.org> | 2006-10-11 01:21:19 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-11 11:14:18 -0700 |
| commit | f4e5bc244f23ee024a4dfa034b591b219b2bfb8f (patch) | |
| tree | df0cb1469de20ae9706a671ab8e9b049e1d93f63 /fs/ext4/super.c | |
| parent | 72b64b594081ef0a0717f6aad77e891c72ed4afa (diff) | |
| download | op-kernel-dev-f4e5bc244f23ee024a4dfa034b591b219b2bfb8f.zip op-kernel-dev-f4e5bc244f23ee024a4dfa034b591b219b2bfb8f.tar.gz | |
[PATCH] ext4 64 bit divide fix
With CONFIG_LBD=n, sector_div() expands to a plain old divide. But ext4 is
_not_ passing in a sector_t as the first argument, so...
fs/built-in.o: In function `ext4_get_group_no_and_offset':
fs/ext4/balloc.c:39: undefined reference to `__umoddi3'
fs/ext4/balloc.c:41: undefined reference to `__udivdi3'
fs/built-in.o: In function `find_group_orlov':
fs/ext4/ialloc.c:278: undefined reference to `__udivdi3'
fs/built-in.o: In function `ext4_fill_super':
fs/ext4/super.c:1488: undefined reference to `__udivdi3'
fs/ext4/super.c:1488: undefined reference to `__umoddi3'
fs/ext4/super.c:1594: undefined reference to `__udivdi3'
fs/ext4/super.c:1601: undefined reference to `__umoddi3'
Fix that up by calling do_div() directly.
Also cast the arg to u64. do_div() is only defined on u64, and ext4_fsblk_t
is supposed to be opaque.
Note especially the changes to find_group_orlov(). It was attempting to do
do_div(int, unsigned long long);
which is royally screwed up. Switched it to plain old divide.
Cc: <linux-ext4@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/ext4/super.c')
| -rw-r--r-- | fs/ext4/super.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 811011f..f7ea022 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -1485,7 +1485,7 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent) */ if (blocksize != EXT4_MIN_BLOCK_SIZE) { logic_sb_block = sb_block * EXT4_MIN_BLOCK_SIZE; - offset = sector_div(logic_sb_block, blocksize); + offset = do_div(logic_sb_block, blocksize); } else { logic_sb_block = sb_block; } @@ -1591,7 +1591,7 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent) brelse (bh); sb_set_blocksize(sb, blocksize); logic_sb_block = sb_block * EXT4_MIN_BLOCK_SIZE; - offset = sector_div(logic_sb_block, blocksize); + offset = do_div(logic_sb_block, blocksize); bh = sb_bread(sb, logic_sb_block); if (!bh) { printk(KERN_ERR |
