• Artem Bityutskiy's avatar
    UBIFS: fix shrinker object count reports · cf610bf4
    Artem Bityutskiy authored
    Sometimes VM asks the shrinker to return amount of objects it can shrink,
    and we return the ubifs_clean_zn_cnt in that case. However, it is possible
    that this counter is negative for a short period of time, due to the way
    UBIFS TNC code updates it. And I can observe the following warnings sometimes:
    
    shrink_slab: ubifs_shrinker+0x0/0x2b7 [ubifs] negative objects to delete nr=-8541616642706119788
    
    This patch makes sure UBIFS never returns negative count of objects.
    Signed-off-by: default avatarArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
    Cc: stable@kernel.org
    cf610bf4
shrinker.c 9.46 KB