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From: xiubli@redhat.com
To: jlayton@kernel.org
Cc: idryomov@gmail.com, pdonnell@redhat.com, ukernel@gmail.com,
	ceph-devel@vger.kernel.org, Xiubo Li <xiubli@redhat.com>
Subject: [PATCH] ceph: make the lost+found dir accessible by kernel client
Date: Mon, 19 Apr 2021 10:32:37 +0800	[thread overview]
Message-ID: <20210419023237.1177430-1-xiubli@redhat.com> (raw)

From: Xiubo Li <xiubli@redhat.com>

Inode number 0x4 is reserved for the lost+found dir, and the app
or test app need to access it.

URL: https://tracker.ceph.com/issues/50216
Signed-off-by: Xiubo Li <xiubli@redhat.com>
---
 fs/ceph/super.h              | 3 ++-
 include/linux/ceph/ceph_fs.h | 7 ++++---
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/fs/ceph/super.h b/fs/ceph/super.h
index 4808a1458c9b..0f38e6183ff0 100644
--- a/fs/ceph/super.h
+++ b/fs/ceph/super.h
@@ -542,7 +542,8 @@ static inline int ceph_ino_compare(struct inode *inode, void *data)
 
 static inline bool ceph_vino_is_reserved(const struct ceph_vino vino)
 {
-	if (vino.ino < CEPH_INO_SYSTEM_BASE && vino.ino != CEPH_INO_ROOT) {
+	if (vino.ino < CEPH_INO_SYSTEM_BASE && vino.ino != CEPH_INO_ROOT &&
+	    vino.ino != CEPH_INO_LOST_AND_FOUND ) {
 		WARN_RATELIMIT(1, "Attempt to access reserved inode number 0x%llx", vino.ino);
 		return true;
 	}
diff --git a/include/linux/ceph/ceph_fs.h b/include/linux/ceph/ceph_fs.h
index e41a811026f6..57e5bd63fb7a 100644
--- a/include/linux/ceph/ceph_fs.h
+++ b/include/linux/ceph/ceph_fs.h
@@ -27,9 +27,10 @@
 #define CEPH_MONC_PROTOCOL   15 /* server/client */
 
 
-#define CEPH_INO_ROOT   1
-#define CEPH_INO_CEPH   2       /* hidden .ceph dir */
-#define CEPH_INO_DOTDOT 3	/* used by ceph fuse for parent (..) */
+#define CEPH_INO_ROOT           1
+#define CEPH_INO_CEPH           2 /* hidden .ceph dir */
+#define CEPH_INO_DOTDOT         3 /* used by ceph fuse for parent (..) */
+#define CEPH_INO_LOST_AND_FOUND 4 /* lost+found dir */
 
 /* arbitrary limit on max # of monitors (cluster of 3 is typical) */
 #define CEPH_MAX_MON   31
-- 
2.27.0


             reply	other threads:[~2021-04-19  2:32 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-19  2:32 xiubli [this message]
2021-04-19 16:09 ` Jeff Layton
2021-04-20  0:23   ` Xiubo Li
2021-04-20  2:02   ` Xiubo Li
2021-04-20 12:51     ` Jeff Layton
2021-04-20 13:30       ` Xiubo Li

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