fs/read_write: make default_llseek() killable

Allows killing processes that are waiting for the inode lock.

Signed-off-by: Max Kellermann <[email protected]>
Link: https://lore.kernel.org/[email protected]
Signed-off-by: Christian Brauner <[email protected]>

Author: MaxKellermann

fs/read_write.c

@@ -332,7 +332,9 @@ loff_t default_llseek(struct file *file, loff_t offset, int whence)
 	struct inode *inode = file_inode(file);
 	loff_t retval;
 
-	inode_lock(inode);
+	retval = inode_lock_killable(inode);
+	if (retval)
+		return retval;
 	switch (whence) {
 		case SEEK_END:
 			offset += i_size_read(inode);