add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/fs/fuse/dir.c
..
..
@@ -205,7 +205,7 @@
205
205
 	if (inode && fuse_is_bad(inode))
206
206
 		goto invalid;
207
207
 	else if (time_before64(fuse_dentry_time(entry), get_jiffies_64()) ||
208
-		 (flags & (LOOKUP_EXCL | LOOKUP_REVAL))) {
208
+		 (flags & (LOOKUP_EXCL | LOOKUP_REVAL | LOOKUP_RENAME_TARGET))) {
209
209
 		struct fuse_entry_out outarg;
210
210
 		FUSE_ARGS(args);
211
211
 		struct fuse_forget_link *forget;
..
..
@@ -249,7 +249,7 @@
249
249
 			spin_unlock(&fi->lock);
250
250
 		}
251
251
 		kfree(forget);
252
-		if (ret == -ENOMEM)
252
+		if (ret == -ENOMEM || ret == -EINTR)
253
253
 			goto out;
254
254
 		if (ret || fuse_invalid_attr(&outarg.attr) ||
255
255
 		    fuse_stale_inode(inode, outarg.generation, &outarg.attr))
..
..
@@ -578,6 +578,7 @@
578
578
 	struct fuse_entry_out outentry;
579
579
 	struct fuse_inode *fi;
580
580
 	struct fuse_file *ff;
581
+	bool trunc = flags & O_TRUNC;
581
582
 
582
583
 	/* Userspace expects S_IFREG in create mode */
583
584
 	BUG_ON((mode & S_IFMT) != S_IFREG);
..
..
@@ -646,6 +647,10 @@
646
647
 	} else {
647
648
 		file->private_data = ff;
648
649
 		fuse_finish_open(inode, file);
650
+		if (fm->fc->atomic_o_trunc && trunc)
651
+			truncate_pagecache(inode, 0);
652
+		else if (!(ff->open_flags & FOPEN_KEEP_CACHE))
653
+			invalidate_inode_pages2(inode->i_mapping);
649
654
 	}
650
655
 	return err;
651
656