Message ID | 20240131205237.3540210-6-bvanassche@acm.org (mailing list archive) |
---|---|
State | New |
Headers | show |
Series | Restore data lifetime support | expand |
diff --git a/fs/fcntl.c b/fs/fcntl.c index fc73c5fae43c..cfb52c3a4577 100644 --- a/fs/fcntl.c +++ b/fs/fcntl.c @@ -319,6 +319,17 @@ static long fcntl_set_rw_hint(struct file *file, unsigned int cmd, inode->i_write_hint = hint; inode_unlock(inode); + /* + * file->f_mapping->host may differ from inode. As an example, + * blkdev_open() modifies file->f_mapping. + */ + if (file->f_mapping->host != inode) { + inode = file->f_mapping->host; + inode_lock(inode); + inode->i_write_hint = hint; + inode_unlock(inode); + } + return 0; }