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    SubjectRe: [PATCH] remove sb->s_files and file_list_lock usage in dquot.c
    On Tue, Feb 06, 2007 at 02:23:33PM +0100, Christoph Hellwig wrote:
    > Iterate over sb->s_inodes instead of sb->s_files in add_dquot_ref.
    > This reduces list search and lock hold time aswell as getting rid of
    > one of the few uses of file_list_lock which Ingo identified as a
    > scalability problem.


    The i_mutex lock the inode structure is also a source of contention
    heavy when running a lot of parallel "find"s. I'm sure that folks
    would be open to hearing suggestions regarding how to fix that.


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