From: Bobi Jam <bobijam@whamcloud.com>
Date: Tue, 14 Mar 2023 02:02:12 +0000 (+0800)
Subject: LU-16637 llite: call truncate_inode_pages() under inode lock
X-Git-Tag: 2.15.55~55
X-Git-Url: https://git.whamcloud.com/?a=commitdiff_plain;h=ef9be34478036db0544753e33030fff7e32bfe44;p=fs%2Flustre-release.git

LU-16637 llite: call truncate_inode_pages() under inode lock

truncate_inode_pages() is required to be called under (and serialised
by) inode lock.

Signed-off-by: Bobi Jam <bobijam@whamcloud.com>
Change-Id: I0f1a09c8756522f87a2e5d8030d12f80e2f630b4
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/50284
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Patrick Farrell <pfarrell@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>
---

diff --git a/lustre/llite/llite_internal.h b/lustre/llite/llite_internal.h
index bf632d4..6e76c82 100644
--- a/lustre/llite/llite_internal.h
+++ b/lustre/llite/llite_internal.h
@@ -1306,7 +1306,7 @@ int ll_update_inode(struct inode *inode, struct lustre_md *md);
 void ll_update_inode_flags(struct inode *inode, unsigned int ext_flags);
 void ll_update_dir_depth(struct inode *dir, struct inode *inode);
 int ll_read_inode2(struct inode *inode, void *opaque);
-void ll_truncate_inode_pages_final(struct inode *inode);
+void ll_truncate_inode_pages_final(struct inode *inode, struct cl_io *io);
 void ll_delete_inode(struct inode *inode);
 int ll_iocontrol(struct inode *inode, struct file *file,
                  unsigned int cmd, unsigned long arg);
diff --git a/lustre/llite/llite_lib.c b/lustre/llite/llite_lib.c
index 054661e..cbe56d0 100644
--- a/lustre/llite/llite_lib.c
+++ b/lustre/llite/llite_lib.c
@@ -2863,12 +2863,15 @@ void ll_update_dir_depth(struct inode *dir, struct inode *inode)
 	       PFID(&lli->lli_fid), lli->lli_dir_depth, lli->lli_inherit_depth);
 }
 
-void ll_truncate_inode_pages_final(struct inode *inode)
+void ll_truncate_inode_pages_final(struct inode *inode, struct cl_io *io)
 {
 	struct address_space *mapping = &inode->i_data;
 	unsigned long nrpages;
 	unsigned long flags;
 
+	LASSERTF(io == NULL || inode_is_locked(inode), "io %p (type %d)\n",
+		 io, io ? io->ci_type : 0);
+
 	truncate_inode_pages_final(mapping);
 
 	/* Workaround for LU-118: Note nrpages may not be totally updated when
@@ -2885,10 +2888,12 @@ void ll_truncate_inode_pages_final(struct inode *inode)
 		ll_xa_unlock_irqrestore(&mapping->i_pages, flags);
 	} /* Workaround end */
 
-	LASSERTF(nrpages == 0, "%s: inode="DFID"(%p) nrpages=%lu, "
+	LASSERTF(nrpages == 0, "%s: inode="DFID"(%p) nrpages=%lu "
+		 "io %p (io_type %d), "
 		 "see https://jira.whamcloud.com/browse/LU-118\n",
 		 ll_i2sbi(inode)->ll_fsname,
-		 PFID(ll_inode2fid(inode)), inode, nrpages);
+		 PFID(ll_inode2fid(inode)), inode, nrpages,
+		 io, io ? io->ci_type : 0);
 }
 
 int ll_read_inode2(struct inode *inode, void *opaque)
@@ -2962,7 +2967,7 @@ void ll_delete_inode(struct inode *inode)
 				   CL_FSYNC_LOCAL : CL_FSYNC_DISCARD, 1);
 	}
 
-	ll_truncate_inode_pages_final(inode);
+	ll_truncate_inode_pages_final(inode, NULL);
 	ll_clear_inode(inode);
 	clear_inode(inode);
 
diff --git a/lustre/llite/vvp_object.c b/lustre/llite/vvp_object.c
index b19b30f..650df1b 100644
--- a/lustre/llite/vvp_object.c
+++ b/lustre/llite/vvp_object.c
@@ -155,6 +155,7 @@ static int vvp_conf_set(const struct lu_env *env, struct cl_object *obj,
 
 static int vvp_prune(const struct lu_env *env, struct cl_object *obj)
 {
+	struct cl_io *io = vvp_env_io(env)->vui_cl.cis_io;
 	struct inode *inode = vvp_object_inode(obj);
 	int rc;
 	ENTRY;
@@ -166,9 +167,15 @@ static int vvp_prune(const struct lu_env *env, struct cl_object *obj)
 		RETURN(rc);
 	}
 
-	ll_truncate_inode_pages_final(inode);
+	if (io != NULL)
+		inode_lock(inode);
+
+	ll_truncate_inode_pages_final(inode, io);
 	mapping_clear_exiting(inode->i_mapping);
 
+	if (io != NULL)
+		inode_unlock(inode);
+
 	RETURN(0);
 }