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    dealing with the rest of shrink_dentry_list() livelock · b2b80195
    Al Viro 提交于
    We have the same problem with ->d_lock order in the inner loop, where
    we are dropping references to ancestors.  Same solution, basically -
    instead of using dentry_kill() we use lock_parent() (introduced in the
    previous commit) to get that lock in a safe way, recheck ->d_count
    (in case if lock_parent() has ended up dropping and retaking ->d_lock
    and somebody managed to grab a reference during that window), trylock
    the inode->i_lock and use __dentry_kill() to do the rest.
    Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
    b2b80195
dcache.c 87.2 KB