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| author | Christoph Hellwig <hch@infradead.org> | 2008-08-13 16:13:45 +1000 |
|---|---|---|
| committer | Lachlan McIlroy <lachlan@redback.melbourne.sgi.com> | 2008-08-13 16:13:45 +1000 |
| commit | 907f49a8f552acc5d75635e86d567f05daf5c0d8 (patch) | |
| tree | a6c835cf6b5be39111c0107039e8123e273339a2 /fs/xfs/linux-2.6/xfs_vnode.h | |
| parent | 0b1f917730dc2276fadbd9813ac3666abd7b1cbd (diff) | |
| download | blackbird-obmc-linux-907f49a8f552acc5d75635e86d567f05daf5c0d8.tar.gz blackbird-obmc-linux-907f49a8f552acc5d75635e86d567f05daf5c0d8.zip | |
[XFS] implement IHOLD/IRELE directly
Now that all direct calls to VN_HOLD/VN_RELE are gone we can implement
IHOLD/IRELE directly.
For the IHOLD case also replace igrab with a direct increment of i_count
because we are guaranteed to already have a live and referenced inode by
the VFS. Also remove the vn_hold statistic because it's been rather
meaningless for some time with most references done by other callers.
SGI-PV: 981498
SGI-Modid: xfs-linux-melb:xfs-kern:31764a
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Diffstat (limited to 'fs/xfs/linux-2.6/xfs_vnode.h')
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_vnode.h | 28 |
1 files changed, 12 insertions, 16 deletions
diff --git a/fs/xfs/linux-2.6/xfs_vnode.h b/fs/xfs/linux-2.6/xfs_vnode.h index cc53687ff826..0d7eac03bdf0 100644 --- a/fs/xfs/linux-2.6/xfs_vnode.h +++ b/fs/xfs/linux-2.6/xfs_vnode.h @@ -69,22 +69,18 @@ static inline int vn_count(bhv_vnode_t *vp) return atomic_read(&vp->i_count); } -/* - * Vnode reference counting functions (and macros for compatibility). - */ -extern bhv_vnode_t *vn_hold(bhv_vnode_t *); - -#if defined(XFS_INODE_TRACE) -#define VN_HOLD(vp) \ - ((void)vn_hold(vp), \ - xfs_itrace_hold(XFS_I(vp), __FILE__, __LINE__, (inst_t *)__return_address)) -#define VN_RELE(vp) \ - (xfs_itrace_rele(XFS_I(vp), __FILE__, __LINE__, (inst_t *)__return_address), \ - iput(vp)) -#else -#define VN_HOLD(vp) ((void)vn_hold(vp)) -#define VN_RELE(vp) (iput(vp)) -#endif +#define IHOLD(ip) \ +do { \ + ASSERT(atomic_read(&VFS_I(ip)->i_count) > 0) ; \ + atomic_inc(&(VFS_I(ip)->i_count)); \ + xfs_itrace_hold((ip), __FILE__, __LINE__, (inst_t *)__return_address); \ +} while (0) + +#define IRELE(ip) \ +do { \ + xfs_itrace_rele((ip), __FILE__, __LINE__, (inst_t *)__return_address); \ + iput(VFS_I(ip)); \ +} while (0) static inline bhv_vnode_t *vn_grab(bhv_vnode_t *vp) { |
