change system file

hc

2024-10-09 244b2c5ca8b14627e4a17755e5922221e121c771

 kernel/fs/locks.c
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..
@@ -1339,6 +1339,7 @@
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  out:
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 	spin_unlock(&ctx->flc_lock);
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 	percpu_up_read(&file_rwsem);
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+	trace_posix_lock_inode(inode, request, error);
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 	/*
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 	 * Free any unused locks.
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 	 */
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@@ -1347,7 +1348,6 @@
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 	if (new_fl2)
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 		locks_free_lock(new_fl2);
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 	locks_dispose_list(&dispose);
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-	trace_posix_lock_inode(inode, request, error);
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 	return error;
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 }
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@@ -2813,6 +2813,29 @@
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 }
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 EXPORT_SYMBOL_GPL(vfs_cancel_lock);
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+/**
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+ * vfs_inode_has_locks - are any file locks held on @inode?
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+ * @inode: inode to check for locks
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+ *
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+ * Return true if there are any FL_POSIX or FL_FLOCK locks currently
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+ * set on @inode.
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+ */
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+bool vfs_inode_has_locks(struct inode *inode)
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+{
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+	struct file_lock_context *ctx;
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+	bool ret;
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+
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+	ctx = smp_load_acquire(&inode->i_flctx);
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+	if (!ctx)
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+		return false;
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+
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+	spin_lock(&ctx->flc_lock);
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+	ret = !list_empty(&ctx->flc_posix) || !list_empty(&ctx->flc_flock);
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+	spin_unlock(&ctx->flc_lock);
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+	return ret;
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+}
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+EXPORT_SYMBOL_GPL(vfs_inode_has_locks);
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+
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 #ifdef CONFIG_PROC_FS
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 #include <linux/proc_fs.h>
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 #include <linux/seq_file.h>