aboutsummaryrefslogtreecommitdiffstats
path: root/fs/ubifs
diff options
context:
space:
mode:
authorSebastian Andrzej Siewior <sebastian@breakpoint.cc>2009-11-29 19:46:02 +0100
committerArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2009-12-04 07:47:11 +0200
commit6afaf8a484cbbfd2ccf58a4e5396d1f280469789 (patch)
treef32db3212e23a38c794df0c01fcf8505180ca51d /fs/ubifs
parent949cb6232d5fc9fa77cfa441418e12d6f9de163e (diff)
downloadkernel_samsung_crespo-6afaf8a484cbbfd2ccf58a4e5396d1f280469789.zip
kernel_samsung_crespo-6afaf8a484cbbfd2ccf58a4e5396d1f280469789.tar.gz
kernel_samsung_crespo-6afaf8a484cbbfd2ccf58a4e5396d1f280469789.tar.bz2
UBI: flush wl before clearing update marker
ubiupdatevol -t does the following: - ubi_start_update() - set_update_marker() - for all LEBs ubi_eba_unmap_leb() - clear_update_marker() - ubi_wl_flush() ubi_wl_flush() physically erases all PEB, once it returns all PEBs are empty. clear_update_marker() has the update marker written after return. If there is a power cut between the last two functions then the UBI volume has no longer the "update" marker set and may have some valid LEBs while some of them may be gone. If that volume in question happens to be a UBIFS volume, then mount will fail with |UBIFS error (pid 1361): ubifs_read_node: bad node type (255 but expected 6) |UBIFS error (pid 1361): ubifs_read_node: bad node at LEB 0:0 |Not a node, first 24 bytes: |00000000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff if there is at least one valid LEB and the wear-leveling worker managed to clear LEB 0. The patch waits for the wl worker to finish prior clearing the "update" marker on flash. The two new LEB which are scheduled for erasing after clear_update_marker() should not matter because they are only visible to UBI. Signed-off-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Cc: stable@kernel.org
Diffstat (limited to 'fs/ubifs')
0 files changed, 0 insertions, 0 deletions