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From: Jeff Layton <jlayton@kernel.org>
To: ceph-devel@vger.kernel.org
Cc: idryomov@gmail.com, sage@redhat.com, zyan@redhat.com,
	pdonnell@redhat.com
Subject: [PATCH v6 03/13] ceph: track primary dentry link
Date: Mon,  2 Mar 2020 09:14:24 -0500	[thread overview]
Message-ID: <20200302141434.59825-4-jlayton@kernel.org> (raw)
In-Reply-To: <20200302141434.59825-1-jlayton@kernel.org>

Newer versions of the MDS will flag a dentry as "primary". In later
patches, we'll need to consult this info, so track it in di->flags.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
---
 fs/ceph/dir.c                | 1 +
 fs/ceph/inode.c              | 8 +++++++-
 fs/ceph/super.h              | 1 +
 include/linux/ceph/ceph_fs.h | 3 +++
 4 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index d0cd0aba5843..a87274935a09 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -1411,6 +1411,7 @@ void ceph_invalidate_dentry_lease(struct dentry *dentry)
 	spin_lock(&dentry->d_lock);
 	di->time = jiffies;
 	di->lease_shared_gen = 0;
+	di->flags &= ~CEPH_DENTRY_PRIMARY_LINK;
 	__dentry_lease_unlist(di);
 	spin_unlock(&dentry->d_lock);
 }
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index 6004ea0d2ef1..e9a29aae9466 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -1052,6 +1052,7 @@ static void __update_dentry_lease(struct inode *dir, struct dentry *dentry,
 				  struct ceph_mds_session **old_lease_session)
 {
 	struct ceph_dentry_info *di = ceph_dentry(dentry);
+	unsigned mask = le16_to_cpu(lease->mask);
 	long unsigned duration = le32_to_cpu(lease->duration_ms);
 	long unsigned ttl = from_time + (duration * HZ) / 1000;
 	long unsigned half_ttl = from_time + (duration * HZ / 2) / 1000;
@@ -1063,8 +1064,13 @@ static void __update_dentry_lease(struct inode *dir, struct dentry *dentry,
 	if (ceph_snap(dir) != CEPH_NOSNAP)
 		return;
 
+	if (mask & CEPH_LEASE_PRIMARY_LINK)
+		di->flags |= CEPH_DENTRY_PRIMARY_LINK;
+	else
+		di->flags &= ~CEPH_DENTRY_PRIMARY_LINK;
+
 	di->lease_shared_gen = atomic_read(&ceph_inode(dir)->i_shared_gen);
-	if (duration == 0) {
+	if (!(mask & CEPH_LEASE_VALID)) {
 		__ceph_dentry_dir_lease_touch(di);
 		return;
 	}
diff --git a/fs/ceph/super.h b/fs/ceph/super.h
index d10513c6f0a1..6acecb7cf6d2 100644
--- a/fs/ceph/super.h
+++ b/fs/ceph/super.h
@@ -284,6 +284,7 @@ struct ceph_dentry_info {
 #define CEPH_DENTRY_REFERENCED		1
 #define CEPH_DENTRY_LEASE_LIST		2
 #define CEPH_DENTRY_SHRINK_LIST		4
+#define CEPH_DENTRY_PRIMARY_LINK	8
 
 struct ceph_inode_xattrs_info {
 	/*
diff --git a/include/linux/ceph/ceph_fs.h b/include/linux/ceph/ceph_fs.h
index 81d934dae129..a45b1c5605b8 100644
--- a/include/linux/ceph/ceph_fs.h
+++ b/include/linux/ceph/ceph_fs.h
@@ -531,6 +531,9 @@ struct ceph_mds_reply_lease {
 	__le32 seq;
 } __attribute__ ((packed));
 
+#define CEPH_LEASE_VALID        (1 | 2) /* old and new bit values */
+#define CEPH_LEASE_PRIMARY_LINK 4       /* primary linkage */
+
 struct ceph_mds_reply_dirfrag {
 	__le32 frag;            /* fragment */
 	__le32 auth;            /* auth mds, if this is a delegation point */
-- 
2.24.1

  parent reply	other threads:[~2020-03-02 14:14 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-02 14:14 [PATCH v6 00/13] ceph: async directory operations support Jeff Layton
2020-03-02 14:14 ` [PATCH v6 01/13] ceph: make kick_flushing_inode_caps non-static Jeff Layton
2020-03-02 14:14 ` [PATCH v6 02/13] ceph: add flag to designate that a request is asynchronous Jeff Layton
2020-03-02 14:14 ` Jeff Layton [this message]
2020-03-02 14:14 ` [PATCH v6 04/13] ceph: add infrastructure for waiting for async create to complete Jeff Layton
2020-03-02 14:14 ` [PATCH v6 05/13] ceph: make __take_cap_refs non-static Jeff Layton
2020-03-02 14:14 ` [PATCH v6 06/13] ceph: cap tracking for async directory operations Jeff Layton
2020-03-02 14:14 ` [PATCH v6 07/13] ceph: don't take refs to want mask unless we have all bits Jeff Layton
2020-03-02 14:14 ` [PATCH v6 08/13] ceph: perform asynchronous unlink if we have sufficient caps Jeff Layton
2020-03-02 14:14 ` [PATCH v6 09/13] ceph: make ceph_fill_inode non-static Jeff Layton
2020-03-02 14:14 ` [PATCH v6 10/13] ceph: decode interval_sets for delegated inos Jeff Layton
2020-03-05 11:45   ` Luis Henriques
2020-03-05 12:02     ` Jeff Layton
2020-03-05 12:20       ` Luis Henriques
2020-03-05 13:36       ` Ilya Dryomov
2020-03-05 13:44         ` Jeff Layton
2020-03-02 14:14 ` [PATCH v6 11/13] ceph: add new MDS req field to hold delegated inode number Jeff Layton
2020-03-02 14:14 ` [PATCH v6 12/13] ceph: cache layout in parent dir on first sync create Jeff Layton
2020-03-02 14:14 ` [PATCH v6 13/13] ceph: attempt to do async create when possible Jeff Layton
2020-03-02 16:22 ` [PATCH v6 00/13] ceph: async directory operations support Yan, Zheng
2020-03-02 21:07   ` Jeff Layton

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