diff options
| -rw-r--r-- | fs/xfs/xfs_icache.c | 234 |
1 files changed, 116 insertions, 118 deletions
diff --git a/fs/xfs/xfs_icache.c b/fs/xfs/xfs_icache.c index 789f8c32e65f..99ee6eee5e0b 100644 --- a/fs/xfs/xfs_icache.c +++ b/fs/xfs/xfs_icache.c @@ -37,8 +37,6 @@ #include <linux/kthread.h> #include <linux/freezer.h> -STATIC void xfs_inode_clear_reclaim_tag(struct xfs_perag *pag, xfs_ino_t ino); - /* * Allocate and initialise an xfs_inode. */ @@ -144,6 +142,122 @@ xfs_inode_free( } /* + * Queue a new inode reclaim pass if there are reclaimable inodes and there + * isn't a reclaim pass already in progress. By default it runs every 5s based + * on the xfs periodic sync default of 30s. Perhaps this should have it's own + * tunable, but that can be done if this method proves to be ineffective or too + * aggressive. + */ +static void +xfs_reclaim_work_queue( + struct xfs_mount *mp) +{ + + rcu_read_lock(); + if (radix_tree_tagged(&mp->m_perag_tree, XFS_ICI_RECLAIM_TAG)) { + queue_delayed_work(mp->m_reclaim_workqueue, &mp->m_reclaim_work, + msecs_to_jiffies(xfs_syncd_centisecs / 6 * 10)); + } + rcu_read_unlock(); +} + +/* + * This is a fast pass over the inode cache to try to get reclaim moving on as + * many inodes as possible in a short period of time. It kicks itself every few + * seconds, as well as being kicked by the inode cache shrinker when memory + * goes low. It scans as quickly as possible avoiding locked inodes or those + * already being flushed, and once done schedules a future pass. + */ +void +xfs_reclaim_worker( + struct work_struct *work) +{ + struct xfs_mount *mp = container_of(to_delayed_work(work), + struct xfs_mount, m_reclaim_work); + + xfs_reclaim_inodes(mp, SYNC_TRYLOCK); + xfs_reclaim_work_queue(mp); +} + +static void +xfs_perag_set_reclaim_tag( + struct xfs_perag *pag) +{ + struct xfs_mount *mp = pag->pag_mount; + + ASSERT(spin_is_locked(&pag->pag_ici_lock)); + if (pag->pag_ici_reclaimable++) + return; + + /* propagate the reclaim tag up into the perag radix tree */ + spin_lock(&mp->m_perag_lock); + radix_tree_tag_set(&mp->m_perag_tree, pag->pag_agno, + XFS_ICI_RECLAIM_TAG); + spin_unlock(&mp->m_perag_lock); + + /* schedule periodic background inode reclaim */ + xfs_reclaim_work_queue(mp); + + trace_xfs_perag_set_reclaim(mp, pag->pag_agno, -1, _RET_IP_); +} + +static void +xfs_perag_clear_reclaim_tag( + struct xfs_perag *pag) +{ + struct xfs_mount *mp = pag->pag_mount; + + ASSERT(spin_is_locked(&pag->pag_ici_lock)); + if (--pag->pag_ici_reclaimable) + return; + + /* clear the reclaim tag from the perag radix tree */ + spin_lock(&mp->m_perag_lock); + radix_tree_tag_clear(&mp->m_perag_tree, pag->pag_agno, + XFS_ICI_RECLAIM_TAG); + spin_unlock(&mp->m_perag_lock); + trace_xfs_perag_clear_reclaim(mp, pag->pag_agno, -1, _RET_IP_); +} + + +/* + * We set the inode flag atomically with the radix tree tag. + * Once we get tag lookups on the radix tree, this inode flag + * can go away. + */ +void +xfs_inode_set_reclaim_tag( + struct xfs_inode *ip) +{ + struct xfs_mount *mp = ip->i_mount; + struct xfs_perag *pag; + + pag = xfs_perag_get(mp, XFS_INO_TO_AGNO(mp, ip->i_ino)); + spin_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); + xfs_perag_set_reclaim_tag(pag); + __xfs_iflags_set(ip, XFS_IRECLAIMABLE); + + spin_unlock(&ip->i_flags_lock); + spin_unlock(&pag->pag_ici_lock); + xfs_perag_put(pag); +} + +STATIC void +xfs_inode_clear_reclaim_tag( + struct xfs_perag *pag, + xfs_ino_t ino) +{ + radix_tree_tag_clear(&pag->pag_ici_root, + XFS_INO_TO_AGINO(pag->pag_mount, ino), + XFS_ICI_RECLAIM_TAG); + xfs_perag_clear_reclaim_tag(pag); +} + +/* * When we recycle a reclaimable inode, we need to re-initialise the VFS inode * part of the structure. This is made more complex by the fact we store * information about the on-disk values in the VFS inode and so we can't just @@ -729,122 +843,6 @@ xfs_inode_ag_iterator_tag( } /* - * Queue a new inode reclaim pass if there are reclaimable inodes and there - * isn't a reclaim pass already in progress. By default it runs every 5s based - * on the xfs periodic sync default of 30s. Perhaps this should have it's own - * tunable, but that can be done if this method proves to be ineffective or too - * aggressive. - */ -static void -xfs_reclaim_work_queue( - struct xfs_mount *mp) -{ - - rcu_read_lock(); - if (radix_tree_tagged(&mp->m_perag_tree, XFS_ICI_RECLAIM_TAG)) { - queue_delayed_work(mp->m_reclaim_workqueue, &mp->m_reclaim_work, - msecs_to_jiffies(xfs_syncd_centisecs / 6 * 10)); - } - rcu_read_unlock(); -} - -/* - * This is a fast pass over the inode cache to try to get reclaim moving on as - * many inodes as possible in a short period of time. It kicks itself every few - * seconds, as well as being kicked by the inode cache shrinker when memory - * goes low. It scans as quickly as possible avoiding locked inodes or those - * already being flushed, and once done schedules a future pass. - */ -void -xfs_reclaim_worker( - struct work_struct *work) -{ - struct xfs_mount *mp = container_of(to_delayed_work(work), - struct xfs_mount, m_reclaim_work); - - xfs_reclaim_inodes(mp, SYNC_TRYLOCK); - xfs_reclaim_work_queue(mp); -} - -static void -xfs_perag_set_reclaim_tag( - struct xfs_perag *pag) -{ - struct xfs_mount *mp = pag->pag_mount; - - ASSERT(spin_is_locked(&pag->pag_ici_lock)); - if (pag->pag_ici_reclaimable++) - return; - - /* propagate the reclaim tag up into the perag radix tree */ - spin_lock(&mp->m_perag_lock); - radix_tree_tag_set(&mp->m_perag_tree, pag->pag_agno, - XFS_ICI_RECLAIM_TAG); - spin_unlock(&mp->m_perag_lock); - - /* schedule periodic background inode reclaim */ - xfs_reclaim_work_queue(mp); - - trace_xfs_perag_set_reclaim(mp, pag->pag_agno, -1, _RET_IP_); -} - -static void -xfs_perag_clear_reclaim_tag( - struct xfs_perag *pag) -{ - struct xfs_mount *mp = pag->pag_mount; - - ASSERT(spin_is_locked(&pag->pag_ici_lock)); - if (--pag->pag_ici_reclaimable) - return; - - /* clear the reclaim tag from the perag radix tree */ - spin_lock(&mp->m_perag_lock); - radix_tree_tag_clear(&mp->m_perag_tree, pag->pag_agno, - XFS_ICI_RECLAIM_TAG); - spin_unlock(&mp->m_perag_lock); - trace_xfs_perag_clear_reclaim(mp, pag->pag_agno, -1, _RET_IP_); -} - - -/* - * We set the inode flag atomically with the radix tree tag. - * Once we get tag lookups on the radix tree, this inode flag - * can go away. - */ -void -xfs_inode_set_reclaim_tag( - struct xfs_inode *ip) -{ - struct xfs_mount *mp = ip->i_mount; - struct xfs_perag *pag; - - pag = xfs_perag_get(mp, XFS_INO_TO_AGNO(mp, ip->i_ino)); - spin_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); - xfs_perag_set_reclaim_tag(pag); - __xfs_iflags_set(ip, XFS_IRECLAIMABLE); - - spin_unlock(&ip->i_flags_lock); - spin_unlock(&pag->pag_ici_lock); - xfs_perag_put(pag); -} - -STATIC void -xfs_inode_clear_reclaim_tag( - struct xfs_perag *pag, - xfs_ino_t ino) -{ - radix_tree_tag_clear(&pag->pag_ici_root, - XFS_INO_TO_AGINO(pag->pag_mount, ino), - XFS_ICI_RECLAIM_TAG); - xfs_perag_clear_reclaim_tag(pag); -} - -/* * Grab the inode for reclaim exclusively. * Return 0 if we grabbed it, non-zero otherwise. */ |