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| author | Andrew Morton <akpm@osdl.org> | 2006-10-11 12:21:19 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-11 22:14:18 +0400 |
| commit | f4e5bc244f23ee024a4dfa034b591b219b2bfb8f (patch) | |
| tree | df0cb1469de20ae9706a671ab8e9b049e1d93f63 /fs/ext4/ialloc.c | |
| parent | 72b64b594081ef0a0717f6aad77e891c72ed4afa (diff) | |
| download | linux-f4e5bc244f23ee024a4dfa034b591b219b2bfb8f.tar.xz | |
[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/ialloc.c')
| -rw-r--r-- | fs/ext4/ialloc.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c index 75608e1e5555..c88b439ba5cd 100644 --- a/fs/ext4/ialloc.c +++ b/fs/ext4/ialloc.c @@ -275,7 +275,7 @@ static int find_group_orlov(struct super_block *sb, struct inode *parent) avefreei = freei / ngroups; freeb = percpu_counter_read_positive(&sbi->s_freeblocks_counter); avefreeb = freeb; - sector_div(avefreeb, ngroups); + do_div(avefreeb, ngroups); ndirs = percpu_counter_read_positive(&sbi->s_dirs_counter); if ((parent == sb->s_root->d_inode) || @@ -305,14 +305,14 @@ static int find_group_orlov(struct super_block *sb, struct inode *parent) } blocks_per_dir = ext4_blocks_count(es) - freeb; - sector_div(blocks_per_dir, ndirs); + do_div(blocks_per_dir, ndirs); max_dirs = ndirs / ngroups + inodes_per_group / 16; min_inodes = avefreei - inodes_per_group / 4; min_blocks = avefreeb - EXT4_BLOCKS_PER_GROUP(sb) / 4; max_debt = EXT4_BLOCKS_PER_GROUP(sb); - sector_div(max_debt, max(blocks_per_dir, (ext4_fsblk_t)BLOCK_COST)); + max_debt /= max_t(int, blocks_per_dir, BLOCK_COST); if (max_debt * INODE_COST > inodes_per_group) max_debt = inodes_per_group / INODE_COST; if (max_debt > 255) |