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[XFS] mark inodes for reclaim via a tag in the inode radix tree 

Prepare for removing the deleted inode list by marking inodes for reclaim
in the inode radix trees so that we can use the radix trees to find
reclaimable inodes.

SGI-PV: 988142

SGI-Modid: xfs-linux-melb:xfs-kern:32331a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
This commit is contained in:
David Chinner 2008-10-30 17:37:26 +11:00 committed by Lachlan McIlroy
parent 1dc3318ae1
commit 396beb8531
5 changed files with 54 additions and 0 deletions
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41
fs/xfs/linux-2.6/xfs_sync.c
View File

@ -644,6 +644,47 @@ xfs_reclaim_inode(
return 0;
}
void
xfs_inode_set_reclaim_tag(
xfs_inode_t *ip)
{
xfs_mount_t *mp = ip->i_mount;
xfs_perag_t *pag = xfs_get_perag(mp, ip->i_ino);
read_lock(&pag->pag_ici_lock);
spin_lock(&ip->i_flags_lock);
radix_tree_tag_set(&pag->pag_ici_root,
XFS_INO_TO_AGINO(mp, ip->i_ino), XFS_ICI_RECLAIM_TAG);
spin_unlock(&ip->i_flags_lock);
read_unlock(&pag->pag_ici_lock);
xfs_put_perag(mp, pag);
}
void
__xfs_inode_clear_reclaim_tag(
xfs_mount_t *mp,
xfs_perag_t *pag,
xfs_inode_t *ip)
{
radix_tree_tag_clear(&pag->pag_ici_root,
XFS_INO_TO_AGINO(mp, ip->i_ino), XFS_ICI_RECLAIM_TAG);
}
void
xfs_inode_clear_reclaim_tag(
xfs_inode_t *ip)
{
xfs_mount_t *mp = ip->i_mount;
xfs_perag_t *pag = xfs_get_perag(mp, ip->i_ino);
read_lock(&pag->pag_ici_lock);
spin_lock(&ip->i_flags_lock);
__xfs_inode_clear_reclaim_tag(mp, pag, ip);
spin_unlock(&ip->i_flags_lock);
read_unlock(&pag->pag_ici_lock);
xfs_put_perag(mp, pag);
}
int
xfs_reclaim_inodes(
xfs_mount_t *mp,

4
fs/xfs/linux-2.6/xfs_sync.h
View File

@ -48,4 +48,8 @@ void xfs_flush_device(struct xfs_inode *ip);
int xfs_reclaim_inode(struct xfs_inode *ip, int locked, int sync_mode);
int xfs_reclaim_inodes(struct xfs_mount *mp, int noblock, int mode);
void xfs_inode_set_reclaim_tag(struct xfs_inode *ip);
void xfs_inode_clear_reclaim_tag(struct xfs_inode *ip);
void __xfs_inode_clear_reclaim_tag(struct xfs_mount *mp, struct xfs_perag *pag,
struct xfs_inode *ip);
#endif

5
fs/xfs/xfs_ag.h
View File

@ -204,6 +204,11 @@ typedef struct xfs_perag
#endif
} xfs_perag_t;
/*
* tags for inode radix tree
*/
#define XFS_ICI_RECLAIM_TAG 0 /* inode is to be reclaimed */
#define XFS_AG_MAXLEVELS(mp) ((mp)->m_ag_maxlevels)
#define XFS_MIN_FREELIST_RAW(bl,cl,mp) \
(MIN(bl + 1, XFS_AG_MAXLEVELS(mp)) + MIN(cl + 1, XFS_AG_MAXLEVELS(mp)))

3
fs/xfs/xfs_iget.c
View File

@ -91,6 +91,9 @@ xfs_iget_cache_hit(
}
xfs_iflags_set(ip, XFS_INEW);
xfs_iflags_clear(ip, XFS_IRECLAIMABLE);
/* clear the radix tree reclaim flag as well. */
__xfs_inode_clear_reclaim_tag(mp, pag, ip);
read_unlock(&pag->pag_ici_lock);
XFS_MOUNT_ILOCK(mp);

1
fs/xfs/xfs_vnodeops.c
View File

@ -2845,6 +2845,7 @@ xfs_reclaim(
spin_unlock(&ip->i_flags_lock);
list_add_tail(&ip->i_reclaim, &mp->m_del_inodes);
XFS_MOUNT_IUNLOCK(mp);
xfs_inode_set_reclaim_tag(ip);
}
return 0;
}