• C
    [PATCH] ocfs2: fix oops in mmap_truncate testing · c0420ad2
    Coly Li 提交于
    This patch fixes a mmap_truncate bug which was found by ocfs2 test suite.
    
    In an ocfs2 cluster more than 1 node, run program mmap_truncate, which races
    mmap writes and truncates from multiple processes. While the test is
    running, a stat from another node forces writeout, causing an oops in
    ocfs2_get_block() because it sees a buffer to write which isn't allocated.
    
    This patch fixed the bug by clear dirty and uptodate bits in buffer, leave
    the buffer unmapped and return.
    
    Fix is suggested by Mark Fasheh, and I code up the patch.
    Signed-off-by: NColy Li <coyli@suse.de>
    Signed-off-by: NMark Fasheh <mfasheh@suse.com>
    c0420ad2
aops.c 48.7 KB