On Tue, 2007-04-10 at 12:03 -0400, Ming Zhang wrote: > On Wed, 2007-04-04 at 12:52 -0400, John Anthony Kazos Jr. wrote: > > > According to Documentation/filesystems/Locking, ->get_sb() is called > > > with the BKL held, but looking through the code, I'm not able to find > > > where it is being taken. > > > > I noticed that too. Unless I'm just dumb and can't see it, I'm not able to > > find any BKL references during filesystem mounting until you get into > > FS-specific code. I looked through everything from sys_mount through to > > vfs_kern_mount. Documentation/filesystems/porting talks about several > > situations where the VFS code was modified to not take the BKL, and BLK > > calls were added by FS non-maintainers for safety until each FS could be > > audited independently, but that wouldn't be the case, would it? > > > sys_mount->do_mount->do_new_mount->do_kern_mount path > > part of sys_mount() > > 1570 goto out3; > 1571 > 1572 lock_kernel(); > 1573 retval = do_mount((char *)dev_page, dir_page, (char *)type_page, > 1574 flags, (void *)data_page); > 1575 unlock_kernel(); > 1576 free_page(data_page); > 1577 > 1578 out3: > 1579 free_page(dev_page) Thanks. I missed that somehow. It seems the documentation is correct. -- David Kleikamp IBM Linux Technology Center - To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
