diff options
| author |   Pekka Enberg <penberg@cs.helsinki.fi> | 2009-01-04 12:00:48 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2009-01-04 13:33:20 -0800 |
| commit | c644f0e4b56f9a2fc066cd0d75a18074d130e4a3 (patch) | |
| tree | 96f5954d7e72a2bf56f4165f4e7569364562f04f /include/linux/blockgroup_lock.h | |
| parent | spi.h uses/needs device.h (diff) | |
| download | wireguard-linux-c644f0e4b56f9a2fc066cd0d75a18074d130e4a3.tar.xz wireguard-linux-c644f0e4b56f9a2fc066cd0d75a18074d130e4a3.zip | |
fs: introduce bgl_lock_ptr()
As suggested by Andreas Dilger, introduce a bgl_lock_ptr() helper in
<linux/blockgroup_lock.h> and add separate sb_bgl_lock() helpers to
filesystem specific header files to break the hidden dependency to
struct ext[234]_sb_info.
Also, while at it, convert the macros to static inlines to try make up
for all the times I broke Andrew Morton's tree.
Acked-by: Andreas Dilger <adilger@sun.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: <linux-ext4@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/blockgroup_lock.h')
| -rw-r--r-- | include/linux/blockgroup_lock.h | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/include/linux/blockgroup_lock.h b/include/linux/blockgroup_lock.h index 8607312983bd..e44b88ba552b 100644 --- a/include/linux/blockgroup_lock.h +++ b/include/linux/blockgroup_lock.h @@ -53,7 +53,10 @@ static inline void bgl_lock_init(struct blockgroup_lock *bgl) * The accessor is a macro so we can embed a blockgroup_lock into different * superblock types */ -#define sb_bgl_lock(sb, block_group) \ - (&(sb)->s_blockgroup_lock.locks[(block_group) & (NR_BG_LOCKS-1)].lock) +static inline spinlock_t * +bgl_lock_ptr(struct blockgroup_lock *bgl, unsigned int block_group) +{ + return &bgl->locks[(block_group) & (NR_BG_LOCKS-1)].lock; +} #endif |