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ext4: Fix spinlock assertions on UP systems

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On UP systems without DEBUG_SPINLOCK, ext4_is_group_locked always fails
which triggers a BUG_ON() call.
This patch fixes it by using assert_spin_locked instead.

Signed-off-by: Vincent Minet <vincent@vincent-minet.net>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This commit is contained in:
Vincent Minet 2009-05-15 08:33:18 -04:00 committed by Theodore Ts'o
parent 955ce5f5be
commit bc8e67409c
2 changed files with 5 additions and 11 deletions
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6
fs/ext4/ext4.h
View file

@ -1583,12 +1583,6 @@ static inline void ext4_unlock_group(struct super_block *sb,
spin_unlock(ext4_group_lock_ptr(sb, group));
}
static inline int ext4_is_group_locked(struct super_block *sb,
ext4_group_t group)
{
return spin_is_locked(ext4_group_lock_ptr(sb, group));
}
/*
* Inodes and files operations
*/

10
fs/ext4/mballoc.c
View file

@ -436,7 +436,7 @@ static void mb_free_blocks_double(struct inode *inode, struct ext4_buddy *e4b,
if (unlikely(e4b->bd_info->bb_bitmap == NULL))
return;
BUG_ON(!ext4_is_group_locked(sb, e4b->bd_group));
assert_spin_locked(ext4_group_lock_ptr(sb, e4b->bd_group));
for (i = 0; i < count; i++) {
if (!mb_test_bit(first + i, e4b->bd_info->bb_bitmap)) {
ext4_fsblk_t blocknr;
@ -460,7 +460,7 @@ static void mb_mark_used_double(struct ext4_buddy *e4b, int first, int count)
if (unlikely(e4b->bd_info->bb_bitmap == NULL))
return;
BUG_ON(!ext4_is_group_locked(e4b->bd_sb, e4b->bd_group));
assert_spin_locked(ext4_group_lock_ptr(e4b->bd_sb, e4b->bd_group));
for (i = 0; i < count; i++) {
BUG_ON(mb_test_bit(first + i, e4b->bd_info->bb_bitmap));
mb_set_bit(first + i, e4b->bd_info->bb_bitmap);
@ -1115,7 +1115,7 @@ static void mb_free_blocks(struct inode *inode, struct ext4_buddy *e4b,
struct super_block *sb = e4b->bd_sb;
BUG_ON(first + count > (sb->s_blocksize << 3));
BUG_ON(!ext4_is_group_locked(sb, e4b->bd_group));
assert_spin_locked(ext4_group_lock_ptr(sb, e4b->bd_group));
mb_check_buddy(e4b);
mb_free_blocks_double(inode, e4b, first, count);
@ -1196,7 +1196,7 @@ static int mb_find_extent(struct ext4_buddy *e4b, int order, int block,
int ord;
void *buddy;
BUG_ON(!ext4_is_group_locked(e4b->bd_sb, e4b->bd_group));
assert_spin_locked(ext4_group_lock_ptr(e4b->bd_sb, e4b->bd_group));
BUG_ON(ex == NULL);
buddy = mb_find_buddy(e4b, order, &max);
@ -1260,7 +1260,7 @@ static int mb_mark_used(struct ext4_buddy *e4b, struct ext4_free_extent *ex)
BUG_ON(start + len > (e4b->bd_sb->s_blocksize << 3));
BUG_ON(e4b->bd_group != ex->fe_group);
BUG_ON(!ext4_is_group_locked(e4b->bd_sb, e4b->bd_group));
assert_spin_locked(ext4_group_lock_ptr(e4b->bd_sb, e4b->bd_group));
mb_check_buddy(e4b);
mb_mark_used_double(e4b, start, len);