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| author | Vincent Minet <vincent@vincent-minet.net> | 2009-05-15 08:33:18 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2009-05-15 08:33:18 -0400 |
| commit | bc8e67409ccdcff72c3f1656b1fb1aad7ff396db (patch) | |
| tree | 2a766e3c7bc938b697499aa7d5a20f2f468b5a2f /fs/ext4 | |
| parent | 955ce5f5be67dfe0d1d096b543af33fe8a1ce3dd (diff) | |
| download | op-kernel-dev-bc8e67409ccdcff72c3f1656b1fb1aad7ff396db.zip op-kernel-dev-bc8e67409ccdcff72c3f1656b1fb1aad7ff396db.tar.gz | |
ext4: Fix spinlock assertions on UP systems
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>
Diffstat (limited to 'fs/ext4')
| -rw-r--r-- | fs/ext4/ext4.h | 6 | ||||
| -rw-r--r-- | fs/ext4/mballoc.c | 10 |
2 files changed, 5 insertions, 11 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 149e02d..89190ae 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -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 */ diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index e76459c..541bd9a 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -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); |
