diff options
| author | Christoph Hellwig <hch@lst.de> | 2011-07-08 14:36:19 +0200 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2011-07-08 14:36:19 +0200 |
| commit | 0c842ad46a51891ac4420b7285613f4134a65ccd (patch) | |
| tree | cf82cc7853821a21998114d20b1297b14061eade /fs/xfs/linux-2.6/xfs_buf.h | |
| parent | xfs: remove the unused xfs_bufhash structure (diff) | |
| download | linux-0c842ad46a51891ac4420b7285613f4134a65ccd.tar.xz linux-0c842ad46a51891ac4420b7285613f4134a65ccd.zip | |
xfs: clean up buffer locking helpers
Rename xfs_buf_cond_lock and reverse it's return value to fit most other
trylock operations in the Kernel and XFS (with the exception of down_trylock,
after which xfs_buf_cond_lock was modelled), and replace xfs_buf_lock_val
with an xfs_buf_islocked for use in asserts, or and opencoded variant in
tracing. remove the XFS_BUF_* wrappers for all the locking helpers.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Alex Elder <aelder@sgi.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Diffstat (limited to 'fs/xfs/linux-2.6/xfs_buf.h')
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_buf.h | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/fs/xfs/linux-2.6/xfs_buf.h b/fs/xfs/linux-2.6/xfs_buf.h index 6847dc4dceeb..706c40069116 100644 --- a/fs/xfs/linux-2.6/xfs_buf.h +++ b/fs/xfs/linux-2.6/xfs_buf.h @@ -187,10 +187,11 @@ extern void xfs_buf_free(xfs_buf_t *); extern void xfs_buf_rele(xfs_buf_t *); /* Locking and Unlocking Buffers */ -extern int xfs_buf_cond_lock(xfs_buf_t *); -extern int xfs_buf_lock_value(xfs_buf_t *); +extern int xfs_buf_trylock(xfs_buf_t *); extern void xfs_buf_lock(xfs_buf_t *); extern void xfs_buf_unlock(xfs_buf_t *); +#define xfs_buf_islocked(bp) \ + ((bp)->b_sema.count <= 0) /* Buffer Read and Write Routines */ extern int xfs_bwrite(struct xfs_mount *mp, struct xfs_buf *bp); @@ -308,10 +309,6 @@ xfs_buf_set_ref( #define XFS_BUF_ISPINNED(bp) atomic_read(&((bp)->b_pin_count)) -#define XFS_BUF_VALUSEMA(bp) xfs_buf_lock_value(bp) -#define XFS_BUF_CPSEMA(bp) (xfs_buf_cond_lock(bp) == 0) -#define XFS_BUF_VSEMA(bp) xfs_buf_unlock(bp) -#define XFS_BUF_PSEMA(bp,x) xfs_buf_lock(bp) #define XFS_BUF_FINISH_IOWAIT(bp) complete(&bp->b_iowait); #define XFS_BUF_SET_TARGET(bp, target) ((bp)->b_target = (target)) |