All of lore.kernel.org
 help / color / mirror / Atom feed
From: "Darrick J. Wong" <djwong@kernel.org>
To: djwong@kernel.org
Cc: linux-xfs@vger.kernel.org, david@fromorbit.com, hch@infradead.org
Subject: [PATCH 05/15] xfs: pass the goal of the incore inode walk to xfs_inode_walk()
Date: Wed, 02 Jun 2021 15:25:24 -0700	[thread overview]
Message-ID: <162267272469.2375284.14945153699742283950.stgit@locust> (raw)
In-Reply-To: <162267269663.2375284.15885514656776142361.stgit@locust>

From: Darrick J. Wong <djwong@kernel.org>

As part of removing the indirect calls and radix tag implementation
details from the incore inode walk loop, create an enum to represent the
goal of the inode iteration.  More immediately, this separate removes
the need for the "ICI_NOTAG" define which makes little sense.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
---
 fs/xfs/xfs_icache.c |   55 ++++++++++++++++++++++++++++++++++++++++-----------
 fs/xfs/xfs_icache.h |    9 --------
 2 files changed, 43 insertions(+), 21 deletions(-)


diff --git a/fs/xfs/xfs_icache.c b/fs/xfs/xfs_icache.c
index d5ecd4cd3ef5..c6d956406033 100644
--- a/fs/xfs/xfs_icache.c
+++ b/fs/xfs/xfs_icache.c
@@ -26,12 +26,40 @@
 
 #include <linux/iversion.h>
 
+/* Radix tree tags for incore inode tree. */
+
+/* inode is to be reclaimed */
+#define XFS_ICI_RECLAIM_TAG	0
+/* Inode has speculative preallocations (posteof or cow) to clean. */
+#define XFS_ICI_BLOCKGC_TAG	1
+
+/*
+ * The goal for walking incore inodes.  These can correspond with incore inode
+ * radix tree tags when convenient.  Avoid existing XFS_IWALK namespace.
+ */
+enum xfs_icwalk_goal {
+	/* Goals that are not related to tags; these must be < 0. */
+	XFS_ICWALK_DQRELE	= -1,
+
+	/* Goals directly associated with tagged inodes. */
+	XFS_ICWALK_BLOCKGC	= XFS_ICI_BLOCKGC_TAG,
+};
+
+#define XFS_ICWALK_NULL_TAG	(-1U)
+
+/* Compute the inode radix tree tag for this goal. */
+static inline unsigned int
+xfs_icwalk_tag(enum xfs_icwalk_goal goal)
+{
+	return goal < 0 ? XFS_ICWALK_NULL_TAG : goal;
+}
+
 static int xfs_icwalk(struct xfs_mount *mp, int iter_flags,
 		int (*execute)(struct xfs_inode *ip, void *args),
-		void *args, int tag);
+		void *args, enum xfs_icwalk_goal goal);
 static int xfs_icwalk_ag(struct xfs_perag *pag, int iter_flags,
 		int (*execute)(struct xfs_inode *ip, void *args),
-		void *args, int tag);
+		void *args, enum xfs_icwalk_goal goal);
 
 /*
  * Private inode cache walk flags for struct xfs_eofblocks.  Must not coincide
@@ -791,7 +819,7 @@ xfs_dqrele_all_inodes(
 		eofb.eof_flags |= XFS_ICWALK_FLAG_DROP_PDQUOT;
 
 	return xfs_icwalk(mp, XFS_INODE_WALK_INEW_WAIT, xfs_dqrele_inode,
-			&eofb, XFS_ICI_NO_TAG);
+			&eofb, XFS_ICWALK_DQRELE);
 }
 #endif /* CONFIG_XFS_QUOTA */
 
@@ -1539,7 +1567,7 @@ xfs_blockgc_worker(
 	if (!sb_start_write_trylock(mp->m_super))
 		return;
 	error = xfs_icwalk_ag(pag, 0, xfs_blockgc_scan_inode, NULL,
-			XFS_ICI_BLOCKGC_TAG);
+			XFS_ICWALK_BLOCKGC);
 	if (error)
 		xfs_info(mp, "AG %u preallocation gc worker failed, err=%d",
 				pag->pag_agno, error);
@@ -1558,7 +1586,7 @@ xfs_blockgc_free_space(
 	trace_xfs_blockgc_free_space(mp, eofb, _RET_IP_);
 
 	return xfs_icwalk(mp, 0, xfs_blockgc_scan_inode, eofb,
-			XFS_ICI_BLOCKGC_TAG);
+			XFS_ICWALK_BLOCKGC);
 }
 
 /*
@@ -1639,7 +1667,7 @@ xfs_icwalk_ag(
 	int			iter_flags,
 	int			(*execute)(struct xfs_inode *ip, void *args),
 	void			*args,
-	int			tag)
+	enum xfs_icwalk_goal	goal)
 {
 	struct xfs_mount	*mp = pag->pag_mount;
 	uint32_t		first_index;
@@ -1655,12 +1683,13 @@ xfs_icwalk_ag(
 	nr_found = 0;
 	do {
 		struct xfs_inode *batch[XFS_LOOKUP_BATCH];
+		unsigned int	tag = xfs_icwalk_tag(goal);
 		int		error = 0;
 		int		i;
 
 		rcu_read_lock();
 
-		if (tag == XFS_ICI_NO_TAG)
+		if (tag == XFS_ICWALK_NULL_TAG)
 			nr_found = radix_tree_gang_lookup(&pag->pag_ici_root,
 					(void **)batch, first_index,
 					XFS_LOOKUP_BATCH);
@@ -1743,9 +1772,11 @@ static inline struct xfs_perag *
 xfs_icwalk_get_perag(
 	struct xfs_mount	*mp,
 	xfs_agnumber_t		agno,
-	int			tag)
+	enum xfs_icwalk_goal	goal)
 {
-	if (tag == XFS_ICI_NO_TAG)
+	unsigned int		tag = xfs_icwalk_tag(goal);
+
+	if (tag == XFS_ICWALK_NULL_TAG)
 		return xfs_perag_get(mp, agno);
 	return xfs_perag_get_tag(mp, agno, tag);
 }
@@ -1760,16 +1791,16 @@ xfs_icwalk(
 	int			iter_flags,
 	int			(*execute)(struct xfs_inode *ip, void *args),
 	void			*args,
-	int			tag)
+	enum xfs_icwalk_goal	goal)
 {
 	struct xfs_perag	*pag;
 	int			error = 0;
 	int			last_error = 0;
 	xfs_agnumber_t		agno = 0;
 
-	while ((pag = xfs_icwalk_get_perag(mp, agno, tag))) {
+	while ((pag = xfs_icwalk_get_perag(mp, agno, goal))) {
 		agno = pag->pag_agno + 1;
-		error = xfs_icwalk_ag(pag, iter_flags, execute, args, tag);
+		error = xfs_icwalk_ag(pag, iter_flags, execute, args, goal);
 		xfs_perag_put(pag);
 		if (error) {
 			last_error = error;
diff --git a/fs/xfs/xfs_icache.h b/fs/xfs/xfs_icache.h
index d9baa6df1121..c4274c45d914 100644
--- a/fs/xfs/xfs_icache.h
+++ b/fs/xfs/xfs_icache.h
@@ -17,15 +17,6 @@ struct xfs_eofblocks {
 	__u64		eof_min_file_size;
 };
 
-/*
- * tags for inode radix tree
- */
-#define XFS_ICI_NO_TAG		(-1)	/* special flag for an untagged lookup
-					   in xfs_inode_walk */
-#define XFS_ICI_RECLAIM_TAG	0	/* inode is to be reclaimed */
-/* Inode has speculative preallocations (posteof or cow) to clean. */
-#define XFS_ICI_BLOCKGC_TAG	1
-
 /*
  * Flags for xfs_iget()
  */


  parent reply	other threads:[~2021-06-02 22:25 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-02 22:24 [PATCHSET v6 00/15] xfs: clean up incore inode walk functions Darrick J. Wong
2021-06-02 22:25 ` [PATCH 01/15] xfs: move the quotaoff dqrele inode walk into xfs_icache.c Darrick J. Wong
2021-06-02 22:25 ` [PATCH 02/15] xfs: detach inode dquots at the end of inactivation Darrick J. Wong
2021-06-02 22:25 ` [PATCH 03/15] xfs: move the inode walk functions further down Darrick J. Wong
2021-06-02 22:25 ` [PATCH 04/15] xfs: rename xfs_inode_walk functions to xfs_icwalk Darrick J. Wong
2021-06-03  1:02   ` Dave Chinner
2021-06-02 22:25 ` Darrick J. Wong [this message]
2021-06-03  1:04   ` [PATCH 05/15] xfs: pass the goal of the incore inode walk to xfs_inode_walk() Dave Chinner
2021-06-02 22:25 ` [PATCH 06/15] xfs: separate the dqrele_all inode grab logic from xfs_inode_walk_ag_grab Darrick J. Wong
2021-06-03  1:08   ` Dave Chinner
2021-06-02 22:25 ` [PATCH 07/15] xfs: move xfs_inew_wait call into xfs_dqrele_inode Darrick J. Wong
2021-06-02 22:25 ` [PATCH 08/15] xfs: remove iter_flags parameter from xfs_inode_walk_* Darrick J. Wong
2021-06-03  1:09   ` Dave Chinner
2021-06-03  1:38     ` Darrick J. Wong
2021-06-02 22:25 ` [PATCH 09/15] xfs: remove indirect calls from xfs_inode_walk{,_ag} Darrick J. Wong
2021-06-03  1:12   ` Dave Chinner
2021-06-02 22:25 ` [PATCH 10/15] xfs: clean up inode state flag tests in xfs_blockgc_igrab Darrick J. Wong
2021-06-03  1:13   ` Dave Chinner
2021-06-02 22:25 ` [PATCH 11/15] xfs: make the icwalk processing functions clean up the grab state Darrick J. Wong
2021-06-03  1:14   ` Dave Chinner
2021-06-02 22:26 ` [PATCH 12/15] xfs: fix radix tree tag signs Darrick J. Wong
2021-06-02 22:26 ` [PATCH 13/15] xfs: pass struct xfs_eofblocks to the inode scan callback Darrick J. Wong
2021-06-02 22:26 ` [PATCH 14/15] xfs: merge xfs_reclaim_inodes_ag into xfs_inode_walk_ag Darrick J. Wong
2021-06-02 22:26 ` [PATCH 15/15] xfs: refactor per-AG inode tagging functions Darrick J. Wong
2021-06-03  1:16   ` Dave Chinner
2021-06-03  1:27     ` Darrick J. Wong

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=162267272469.2375284.14945153699742283950.stgit@locust \
    --to=djwong@kernel.org \
    --cc=david@fromorbit.com \
    --cc=hch@infradead.org \
    --cc=linux-xfs@vger.kernel.org \
    --subject='Re: [PATCH 05/15] xfs: pass the goal of the incore inode walk to xfs_inode_walk()' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.