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https://github.com/torvalds/linux
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xfs: move reclaim tagging functions
Rearrange the inode tagging functions so that they are higher up in xfs_cache.c and so there is no need for forward prototypes to be defined. This is purely code movement, no other change. Signed-off-by: Dave Chinner <dchinner@redhat.com>
This commit is contained in:
Dave Chinner
Dave Chinner
parent
545c0889d2
commit
ad438c4038
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@ -37,8 +37,6 @@
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#include <linux/kthread.h>
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#include <linux/freezer.h>
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STATIC void xfs_inode_clear_reclaim_tag(struct xfs_perag *pag, xfs_ino_t ino);
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/*
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* Allocate and initialise an xfs_inode.
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*/
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@ -143,6 +141,122 @@ xfs_inode_free(
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__xfs_inode_free(ip);
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}
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/*
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* Queue a new inode reclaim pass if there are reclaimable inodes and there
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* isn't a reclaim pass already in progress. By default it runs every 5s based
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* on the xfs periodic sync default of 30s. Perhaps this should have it's own
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* tunable, but that can be done if this method proves to be ineffective or too
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* aggressive.
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*/
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static void
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xfs_reclaim_work_queue(
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struct xfs_mount *mp)
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{
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rcu_read_lock();
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if (radix_tree_tagged(&mp->m_perag_tree, XFS_ICI_RECLAIM_TAG)) {
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queue_delayed_work(mp->m_reclaim_workqueue, &mp->m_reclaim_work,
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msecs_to_jiffies(xfs_syncd_centisecs / 6 * 10));
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}
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rcu_read_unlock();
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}
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/*
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* This is a fast pass over the inode cache to try to get reclaim moving on as
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* many inodes as possible in a short period of time. It kicks itself every few
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* seconds, as well as being kicked by the inode cache shrinker when memory
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* goes low. It scans as quickly as possible avoiding locked inodes or those
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* already being flushed, and once done schedules a future pass.
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*/
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void
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xfs_reclaim_worker(
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struct work_struct *work)
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{
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struct xfs_mount *mp = container_of(to_delayed_work(work),
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struct xfs_mount, m_reclaim_work);
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xfs_reclaim_inodes(mp, SYNC_TRYLOCK);
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xfs_reclaim_work_queue(mp);
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}
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static void
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xfs_perag_set_reclaim_tag(
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struct xfs_perag *pag)
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{
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struct xfs_mount *mp = pag->pag_mount;
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ASSERT(spin_is_locked(&pag->pag_ici_lock));
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if (pag->pag_ici_reclaimable++)
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return;
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/* propagate the reclaim tag up into the perag radix tree */
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spin_lock(&mp->m_perag_lock);
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radix_tree_tag_set(&mp->m_perag_tree, pag->pag_agno,
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XFS_ICI_RECLAIM_TAG);
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spin_unlock(&mp->m_perag_lock);
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/* schedule periodic background inode reclaim */
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xfs_reclaim_work_queue(mp);
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trace_xfs_perag_set_reclaim(mp, pag->pag_agno, -1, _RET_IP_);
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}
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static void
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xfs_perag_clear_reclaim_tag(
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struct xfs_perag *pag)
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{
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struct xfs_mount *mp = pag->pag_mount;
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ASSERT(spin_is_locked(&pag->pag_ici_lock));
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if (--pag->pag_ici_reclaimable)
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return;
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/* clear the reclaim tag from the perag radix tree */
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spin_lock(&mp->m_perag_lock);
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radix_tree_tag_clear(&mp->m_perag_tree, pag->pag_agno,
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XFS_ICI_RECLAIM_TAG);
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spin_unlock(&mp->m_perag_lock);
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trace_xfs_perag_clear_reclaim(mp, pag->pag_agno, -1, _RET_IP_);
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}
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/*
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* We set the inode flag atomically with the radix tree tag.
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* Once we get tag lookups on the radix tree, this inode flag
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* can go away.
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*/
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void
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xfs_inode_set_reclaim_tag(
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struct xfs_inode *ip)
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{
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struct xfs_mount *mp = ip->i_mount;
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struct xfs_perag *pag;
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pag = xfs_perag_get(mp, XFS_INO_TO_AGNO(mp, ip->i_ino));
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spin_lock(&pag->pag_ici_lock);
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spin_lock(&ip->i_flags_lock);
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radix_tree_tag_set(&pag->pag_ici_root, XFS_INO_TO_AGINO(mp, ip->i_ino),
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XFS_ICI_RECLAIM_TAG);
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xfs_perag_set_reclaim_tag(pag);
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__xfs_iflags_set(ip, XFS_IRECLAIMABLE);
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spin_unlock(&ip->i_flags_lock);
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spin_unlock(&pag->pag_ici_lock);
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xfs_perag_put(pag);
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}
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STATIC void
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xfs_inode_clear_reclaim_tag(
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struct xfs_perag *pag,
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xfs_ino_t ino)
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{
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radix_tree_tag_clear(&pag->pag_ici_root,
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XFS_INO_TO_AGINO(pag->pag_mount, ino),
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XFS_ICI_RECLAIM_TAG);
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xfs_perag_clear_reclaim_tag(pag);
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}
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/*
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* When we recycle a reclaimable inode, we need to re-initialise the VFS inode
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* part of the structure. This is made more complex by the fact we store
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@ -728,122 +842,6 @@ xfs_inode_ag_iterator_tag(
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return last_error;
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}
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/*
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* Queue a new inode reclaim pass if there are reclaimable inodes and there
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* isn't a reclaim pass already in progress. By default it runs every 5s based
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* on the xfs periodic sync default of 30s. Perhaps this should have it's own
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* tunable, but that can be done if this method proves to be ineffective or too
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* aggressive.
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*/
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static void
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xfs_reclaim_work_queue(
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struct xfs_mount *mp)
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{
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rcu_read_lock();
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if (radix_tree_tagged(&mp->m_perag_tree, XFS_ICI_RECLAIM_TAG)) {
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queue_delayed_work(mp->m_reclaim_workqueue, &mp->m_reclaim_work,
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msecs_to_jiffies(xfs_syncd_centisecs / 6 * 10));
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}
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rcu_read_unlock();
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}
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/*
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* This is a fast pass over the inode cache to try to get reclaim moving on as
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* many inodes as possible in a short period of time. It kicks itself every few
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* seconds, as well as being kicked by the inode cache shrinker when memory
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* goes low. It scans as quickly as possible avoiding locked inodes or those
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* already being flushed, and once done schedules a future pass.
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*/
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void
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xfs_reclaim_worker(
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struct work_struct *work)
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{
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struct xfs_mount *mp = container_of(to_delayed_work(work),
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struct xfs_mount, m_reclaim_work);
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xfs_reclaim_inodes(mp, SYNC_TRYLOCK);
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xfs_reclaim_work_queue(mp);
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}
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static void
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xfs_perag_set_reclaim_tag(
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struct xfs_perag *pag)
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{
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struct xfs_mount *mp = pag->pag_mount;
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ASSERT(spin_is_locked(&pag->pag_ici_lock));
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if (pag->pag_ici_reclaimable++)
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return;
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/* propagate the reclaim tag up into the perag radix tree */
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spin_lock(&mp->m_perag_lock);
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radix_tree_tag_set(&mp->m_perag_tree, pag->pag_agno,
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XFS_ICI_RECLAIM_TAG);
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spin_unlock(&mp->m_perag_lock);
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/* schedule periodic background inode reclaim */
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xfs_reclaim_work_queue(mp);
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trace_xfs_perag_set_reclaim(mp, pag->pag_agno, -1, _RET_IP_);
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}
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static void
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xfs_perag_clear_reclaim_tag(
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struct xfs_perag *pag)
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{
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struct xfs_mount *mp = pag->pag_mount;
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ASSERT(spin_is_locked(&pag->pag_ici_lock));
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if (--pag->pag_ici_reclaimable)
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return;
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/* clear the reclaim tag from the perag radix tree */
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spin_lock(&mp->m_perag_lock);
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radix_tree_tag_clear(&mp->m_perag_tree, pag->pag_agno,
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XFS_ICI_RECLAIM_TAG);
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spin_unlock(&mp->m_perag_lock);
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trace_xfs_perag_clear_reclaim(mp, pag->pag_agno, -1, _RET_IP_);
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}
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/*
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* We set the inode flag atomically with the radix tree tag.
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* Once we get tag lookups on the radix tree, this inode flag
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* can go away.
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*/
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void
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xfs_inode_set_reclaim_tag(
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struct xfs_inode *ip)
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{
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struct xfs_mount *mp = ip->i_mount;
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struct xfs_perag *pag;
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pag = xfs_perag_get(mp, XFS_INO_TO_AGNO(mp, ip->i_ino));
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spin_lock(&pag->pag_ici_lock);
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spin_lock(&ip->i_flags_lock);
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radix_tree_tag_set(&pag->pag_ici_root, XFS_INO_TO_AGINO(mp, ip->i_ino),
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XFS_ICI_RECLAIM_TAG);
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xfs_perag_set_reclaim_tag(pag);
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__xfs_iflags_set(ip, XFS_IRECLAIMABLE);
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spin_unlock(&ip->i_flags_lock);
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spin_unlock(&pag->pag_ici_lock);
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xfs_perag_put(pag);
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}
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STATIC void
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xfs_inode_clear_reclaim_tag(
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struct xfs_perag *pag,
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xfs_ino_t ino)
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{
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radix_tree_tag_clear(&pag->pag_ici_root,
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XFS_INO_TO_AGINO(pag->pag_mount, ino),
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XFS_ICI_RECLAIM_TAG);
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xfs_perag_clear_reclaim_tag(pag);
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}
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/*
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* Grab the inode for reclaim exclusively.
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* Return 0 if we grabbed it, non-zero otherwise.
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