X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=fs%2Fopen.c;h=81b2d7c83addbcdd5e73514e8de1dbd4455d4756;hb=9dc34a67db46bbbac9ba8901578329549f6f711b;hp=daa324606a41f8141567cf4395d26458db76a924;hpb=e07af2626643293fa16df655979e7963250abc63;p=mirror_ubuntu-jammy-kernel.git

diff --git a/fs/open.c b/fs/open.c
index daa324606a41..81b2d7c83add 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -65,6 +65,7 @@ int do_truncate(struct user_namespace *mnt_userns, struct dentry *dentry,
 	inode_unlock(dentry->d_inode);
 	return ret;
 }
+EXPORT_SYMBOL_GPL(do_truncate);
 
 long vfs_truncate(const struct path *path, loff_t length)
 {
@@ -856,8 +857,20 @@ static int do_dentry_open(struct file *f,
 		 * of THPs into the page cache will fail.
 		 */
 		smp_mb();
-		if (filemap_nr_thps(inode->i_mapping))
-			truncate_pagecache(inode, 0);
+		if (filemap_nr_thps(inode->i_mapping)) {
+			struct address_space *mapping = inode->i_mapping;
+
+			filemap_invalidate_lock(inode->i_mapping);
+			/*
+			 * unmap_mapping_range just need to be called once
+			 * here, because the private pages is not need to be
+			 * unmapped mapping (e.g. data segment of dynamic
+			 * shared libraries here).
+			 */
+			unmap_mapping_range(mapping, 0, 0, 0);
+			truncate_inode_pages(mapping, 0);
+			filemap_invalidate_unlock(inode->i_mapping);
+		}
 	}
 
 	return 0;