mirror of
https://source.denx.de/u-boot/u-boot.git
synced 2025-09-27 08:41:35 +02:00
69ca709d0f
Original ubifs code was designed that after ubifs_umount() call it is required to also call ubi_close_volume() which closes underlying UBI volume. But U-Boot ubifs modification have not implemented it properly which caused that ubifsumount command contains resource leak. It can be observed by calling simple sequence of commands: => ubi part mtd2 ubi0: attaching mtd2 ... => ubifsmount ubi0 => ubifsumount Unmounting UBIFS volume rootfs! => ubi detach ubi0 error: ubi_detach_mtd_dev: ubi0 reference count 1, destroy anyway ubi0: detaching mtd2 ubi0: mtd2 is detached Fix this issue by calling ubi_close_volume() and mutex_unlock() in directly in ubifs_umount() function before freeing U-Boot's global ubifs_sb. And remove duplicate calls of these two functions in remaining places. Note that when ubifs_umount() is not called then during error handling is still needed to call ubi_close_volume() and mutex_unlock. With this change ubifsumount command does not throw that error anymore: => ubi part rootfs ubi0: attaching mtd2 ... => ubifsmount ubi0 => ubifsumount Unmounting UBIFS volume rootfs! => ubi detach ubi0: detaching mtd2 ubi0: mtd2 is detached Signed-off-by: Pali Rohár <pali@kernel.org>