From: Dave Chinner <david@fromorbit.com>
To: xfs@oss.sgi.com
Subject: [PATCH 10/11] xfs: simplify inode reclaim tagging interfaces
Date: Wed, 13 Apr 2016 15:31:31 +1000 [thread overview]
Message-ID: <1460525492-1170-11-git-send-email-david@fromorbit.com> (raw)
In-Reply-To: <1460525492-1170-1-git-send-email-david@fromorbit.com>
From: Dave Chinner <dchinner@redhat.com>
Inode radix tree tagging for reclaim passes a lot of unnecessary
variables around. Over time the xfs-perag has grown a xfs_mount
backpointer, and an internal agno so we don't need to pass other
variables into the tagging functions to supply this information.
Rework the functions to pass the minimal variable set required
and simplify the internal logic and flow.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
---
fs/xfs/xfs_icache.c | 97 +++++++++++++++++++++++++++--------------------------
1 file changed, 49 insertions(+), 48 deletions(-)
diff --git a/fs/xfs/xfs_icache.c b/fs/xfs/xfs_icache.c
index a60db43..927e7b0 100644
--- a/fs/xfs/xfs_icache.c
+++ b/fs/xfs/xfs_icache.c
@@ -37,8 +37,7 @@
#include <linux/kthread.h>
#include <linux/freezer.h>
-STATIC void __xfs_inode_clear_reclaim_tag(struct xfs_mount *mp,
- struct xfs_perag *pag, struct xfs_inode *ip);
+STATIC void xfs_inode_clear_reclaim_tag(struct xfs_perag *pag, xfs_ino_t ino);
/*
* Allocate and initialise an xfs_inode.
@@ -271,7 +270,7 @@ xfs_iget_cache_hit(
*/
ip->i_flags &= ~XFS_IRECLAIM_RESET_FLAGS;
ip->i_flags |= XFS_INEW;
- __xfs_inode_clear_reclaim_tag(mp, pag, ip);
+ xfs_inode_clear_reclaim_tag(pag, ip->i_ino);
inode->i_state = I_NEW;
ASSERT(!rwsem_is_locked(&ip->i_iolock.mr_lock));
@@ -768,29 +767,44 @@ xfs_reclaim_worker(
}
static void
-__xfs_inode_set_reclaim_tag(
+xfs_perag_set_reclaim_tag(
struct xfs_perag *pag,
- struct xfs_inode *ip)
+ xfs_ino_t ino)
{
- radix_tree_tag_set(&pag->pag_ici_root,
- XFS_INO_TO_AGINO(ip->i_mount, ip->i_ino),
+ 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);
- if (!pag->pag_ici_reclaimable) {
- /* propagate the reclaim tag up into the perag radix tree */
- spin_lock(&ip->i_mount->m_perag_lock);
- radix_tree_tag_set(&ip->i_mount->m_perag_tree,
- XFS_INO_TO_AGNO(ip->i_mount, ip->i_ino),
- XFS_ICI_RECLAIM_TAG);
- spin_unlock(&ip->i_mount->m_perag_lock);
+ /* schedule periodic background inode reclaim */
+ xfs_reclaim_work_queue(mp);
- /* schedule periodic background inode reclaim */
- xfs_reclaim_work_queue(ip->i_mount);
+ trace_xfs_perag_set_reclaim(mp, pag->pag_agno, -1, _RET_IP_);
+}
- trace_xfs_perag_set_reclaim(ip->i_mount, pag->pag_agno,
- -1, _RET_IP_);
- }
- pag->pag_ici_reclaimable++;
+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_);
}
/*
@@ -800,48 +814,35 @@ __xfs_inode_set_reclaim_tag(
*/
void
xfs_inode_set_reclaim_tag(
- xfs_inode_t *ip)
+ struct xfs_inode *ip)
{
- struct xfs_mount *mp = ip->i_mount;
- struct xfs_perag *pag;
+ 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);
- __xfs_inode_set_reclaim_tag(pag, ip);
+
+ 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, ip->i_ino);
__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(
- xfs_perag_t *pag,
- xfs_inode_t *ip)
-{
- pag->pag_ici_reclaimable--;
- if (!pag->pag_ici_reclaimable) {
- /* clear the reclaim tag from the perag radix tree */
- spin_lock(&ip->i_mount->m_perag_lock);
- radix_tree_tag_clear(&ip->i_mount->m_perag_tree,
- XFS_INO_TO_AGNO(ip->i_mount, ip->i_ino),
- XFS_ICI_RECLAIM_TAG);
- spin_unlock(&ip->i_mount->m_perag_lock);
- trace_xfs_perag_clear_reclaim(ip->i_mount, pag->pag_agno,
- -1, _RET_IP_);
- }
-}
STATIC void
-__xfs_inode_clear_reclaim_tag(
- xfs_mount_t *mp,
- xfs_perag_t *pag,
- xfs_inode_t *ip)
+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(mp, ip->i_ino), XFS_ICI_RECLAIM_TAG);
- __xfs_inode_clear_reclaim(pag, ip);
+ XFS_INO_TO_AGINO(pag->pag_mount, ino),
+ XFS_ICI_RECLAIM_TAG);
+ xfs_perag_clear_reclaim_tag(pag);
}
/*
@@ -1032,7 +1033,7 @@ reclaim:
if (!radix_tree_delete(&pag->pag_ici_root,
XFS_INO_TO_AGINO(ip->i_mount, ino)))
ASSERT(0);
- __xfs_inode_clear_reclaim(pag, ip);
+ xfs_perag_clear_reclaim_tag(pag);
spin_unlock(&pag->pag_ici_lock);
/*
--
2.7.0
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next prev parent reply other threads:[~2016-04-13 5:32 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-13 5:31 [PATCH 00/11 v3] xfs: inode reclaim vs the world Dave Chinner
2016-04-13 5:31 ` [PATCH 01/11] xfs: we don't need no steekin ->evict_inode Dave Chinner
2016-04-13 16:41 ` Christoph Hellwig
2016-04-13 21:20 ` Dave Chinner
2016-04-14 12:10 ` Brian Foster
2016-04-13 5:31 ` [PATCH 02/11] xfs: xfs_iflush_cluster fails to abort on error Dave Chinner
2016-04-13 16:41 ` Christoph Hellwig
2016-04-13 5:31 ` [PATCH 03/11] xfs: fix inode validity check in xfs_iflush_cluster Dave Chinner
2016-04-13 5:31 ` [PATCH 04/11] xfs: skip stale inodes " Dave Chinner
2016-04-13 5:31 ` [PATCH 05/11] xfs: optimise xfs_iext_destroy Dave Chinner
2016-04-13 16:45 ` Christoph Hellwig
2016-04-13 5:31 ` [PATCH 06/11] xfs: xfs_inode_free() isn't RCU safe Dave Chinner
2016-04-13 5:31 ` [PATCH 07/11] xfs: mark reclaimed inodes invalid earlier Dave Chinner
2016-04-13 6:49 ` Dave Chinner
2016-04-14 12:10 ` Brian Foster
2016-04-14 23:31 ` Dave Chinner
2016-04-15 12:46 ` Brian Foster
2016-04-13 5:31 ` [PATCH 08/11] xfs: xfs_iflush_cluster has range issues Dave Chinner
2016-04-13 5:31 ` [PATCH 09/11] xfs: rename variables in xfs_iflush_cluster for clarity Dave Chinner
2016-04-13 5:31 ` Dave Chinner [this message]
2016-04-14 12:10 ` [PATCH 10/11] xfs: simplify inode reclaim tagging interfaces Brian Foster
2016-06-29 4:21 ` Darrick J. Wong
2016-04-13 5:31 ` [PATCH 11/11] xfs: move reclaim tagging functions Dave Chinner
2016-04-14 12:11 ` Brian Foster
2016-04-13 15:38 ` [PATCH 00/11 v3] xfs: inode reclaim vs the world Darrick J. Wong
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