diff options
author | Dave Chinner <dchinner@redhat.com> | 2010-07-20 17:53:25 +1000 |
---|---|---|
committer | Alex Elder <aelder@sgi.com> | 2010-07-26 13:16:48 -0500 |
commit | 2f11feabb19748c0ffa2eb82d438e8a91b9f6ea0 (patch) | |
tree | 02564de802ac344b7c2048ed10438443356bfce1 /fs/xfs/xfs_iget.c | |
parent | ec53d1dbb3ca960e7b552397613358ba1dbd12bd (diff) |
xfs: simplify and remove xfs_ireclaim
xfs_ireclaim has to get and put te pag structure because it is only
called with the inode to reclaim. The one caller of this function
already has a reference on the pag and a pointer to is, so move the
radix tree delete to the caller and remove xfs_ireclaim completely.
This avoids a xfs_perag_get/put on every inode being reclaimed.
The overhead was noticed in a bug report at:
https://bugzilla.kernel.org/show_bug.cgi?id=16348
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Alex Elder <aelder@sgi.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs/xfs_iget.c')
-rw-r--r-- | fs/xfs/xfs_iget.c | 53 |
1 files changed, 1 insertions, 52 deletions
diff --git a/fs/xfs/xfs_iget.c b/fs/xfs/xfs_iget.c index 9e86f2116aa..eba5ae61d36 100644 --- a/fs/xfs/xfs_iget.c +++ b/fs/xfs/xfs_iget.c @@ -91,7 +91,7 @@ xfs_inode_alloc( return ip; } -STATIC void +void xfs_inode_free( struct xfs_inode *ip) { @@ -418,57 +418,6 @@ out_error_or_again: } /* - * This is called free all the memory associated with an inode. - * It must free the inode itself and any buffers allocated for - * if_extents/if_data and if_broot. It must also free the lock - * associated with the inode. - * - * Note: because we don't initialise everything on reallocation out - * of the zone, we must ensure we nullify everything correctly before - * freeing the structure. - */ -void -xfs_ireclaim( - struct xfs_inode *ip) -{ - struct xfs_mount *mp = ip->i_mount; - struct xfs_perag *pag; - xfs_agino_t agino = XFS_INO_TO_AGINO(mp, ip->i_ino); - - XFS_STATS_INC(xs_ig_reclaims); - - /* - * Remove the inode from the per-AG radix tree. - * - * Because radix_tree_delete won't complain even if the item was never - * added to the tree assert that it's been there before to catch - * problems with the inode life time early on. - */ - pag = xfs_perag_get(mp, XFS_INO_TO_AGNO(mp, ip->i_ino)); - write_lock(&pag->pag_ici_lock); - if (!radix_tree_delete(&pag->pag_ici_root, agino)) - ASSERT(0); - write_unlock(&pag->pag_ici_lock); - xfs_perag_put(pag); - - /* - * Here we do an (almost) spurious inode lock in order to coordinate - * with inode cache radix tree lookups. This is because the lookup - * can reference the inodes in the cache without taking references. - * - * We make that OK here by ensuring that we wait until the inode is - * unlocked after the lookup before we go ahead and free it. We get - * both the ilock and the iolock because the code may need to drop the - * ilock one but will still hold the iolock. - */ - xfs_ilock(ip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL); - xfs_qm_dqdetach(ip); - xfs_iunlock(ip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL); - - xfs_inode_free(ip); -} - -/* * This is a wrapper routine around the xfs_ilock() routine * used to centralize some grungy code. It is used in places * that wish to lock the inode solely for reading the extents. |