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| author | Christoph Hellwig <hch@infradead.org> | 2010-02-17 19:43:56 +0000 |
|---|---|---|
| committer | Alex Elder <aelder@sgi.com> | 2010-03-01 16:35:50 -0600 |
| commit | 60ec678371183f6e0d487e55fe8adbb33816518e (patch) | |
| tree | 9959de5ad0fd47a8ef363c93e3046023ba81c67a /fs/xfs | |
| parent | d7658d487f4c62983015ba6c99f02dedb3ea97c7 (diff) | |
| download | linux-60ec678371183f6e0d487e55fe8adbb33816518e.tar.gz linux-60ec678371183f6e0d487e55fe8adbb33816518e.tar.bz2 linux-60ec678371183f6e0d487e55fe8adbb33816518e.zip | |
xfs: cleanup xfs_iunpin_wait/xfs_iunpin_nowait
Remove the inode item pointer and ili_last_lsn checks in
__xfs_iunpin_wait as any pinned inode is guaranteed to have them
valid. After this the xfs_iunpin_nowait case is nothing more than a
xfs_log_force_lsn, as we know that the caller has already checked
the pincount.
Make xfs_iunpin_nowait the new low-level routine just doing the log
force and rewrite xfs_iunpin_wait around it.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Alex Elder <aelder@sgi.com>
Diffstat (limited to 'fs/xfs')
| -rw-r--r-- | fs/xfs/xfs_inode.c | 40 |
1 files changed, 12 insertions, 28 deletions
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c index fa31360046d4..16c3968c1bbe 100644 --- a/fs/xfs/xfs_inode.c +++ b/fs/xfs/xfs_inode.c @@ -2467,47 +2467,31 @@ xfs_iunpin( } /* - * This is called to unpin an inode. It can be directed to wait or to return - * immediately without waiting for the inode to be unpinned. The caller must - * have the inode locked in at least shared mode so that the buffer cannot be - * subsequently pinned once someone is waiting for it to be unpinned. + * This is called to unpin an inode. The caller must have the inode locked + * in at least shared mode so that the buffer cannot be subsequently pinned + * once someone is waiting for it to be unpinned. */ -STATIC void -__xfs_iunpin_wait( - xfs_inode_t *ip, - int wait) +static void +xfs_iunpin_nowait( + struct xfs_inode *ip) { - xfs_inode_log_item_t *iip = ip->i_itemp; - ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED)); - if (atomic_read(&ip->i_pincount) == 0) - return; /* Give the log a push to start the unpinning I/O */ - if (iip && iip->ili_last_lsn) - xfs_log_force_lsn(ip->i_mount, iip->ili_last_lsn, 0); - else - xfs_log_force(ip->i_mount, 0); + xfs_log_force_lsn(ip->i_mount, ip->i_itemp->ili_last_lsn, 0); - if (wait) - wait_event(ip->i_ipin_wait, (atomic_read(&ip->i_pincount) == 0)); } void xfs_iunpin_wait( - xfs_inode_t *ip) + struct xfs_inode *ip) { - __xfs_iunpin_wait(ip, 1); -} - -static inline void -xfs_iunpin_nowait( - xfs_inode_t *ip) -{ - __xfs_iunpin_wait(ip, 0); + if (xfs_ipincount(ip)) { + xfs_iunpin_nowait(ip); + wait_event(ip->i_ipin_wait, (xfs_ipincount(ip) == 0)); + } } - /* * xfs_iextents_copy() * |