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| author | Pekka Enberg <penberg@cs.helsinki.fi> | 2009-01-04 21:00:48 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-01-04 22:33:20 +0100 |
| commit | c644f0e4b56f9a2fc066cd0d75a18074d130e4a3 (patch) | |
| tree | 96f5954d7e72a2bf56f4165f4e7569364562f04f /fs | |
| parent | spi.h uses/needs device.h (diff) | |
| download | linux-c644f0e4b56f9a2fc066cd0d75a18074d130e4a3.tar.xz 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 'fs')
| -rw-r--r-- | fs/ext4/ext4_sb.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/ext4/ext4_sb.h b/fs/ext4/ext4_sb.h index 445fde603df8..b21f16713db0 100644 --- a/fs/ext4/ext4_sb.h +++ b/fs/ext4/ext4_sb.h @@ -146,4 +146,10 @@ struct ext4_sb_info { struct flex_groups *s_flex_groups; }; +static inline spinlock_t * +sb_bgl_lock(struct ext4_sb_info *sbi, unsigned int block_group) +{ + return bgl_lock_ptr(&sbi->s_blockgroup_lock, block_group); +} + #endif /* _EXT4_SB */ |