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SubjectRe: [PATCH v4 0/3] ext4: increase mbcache scalability
On 01/24/2014 11:09 PM, Andreas Dilger wrote:
> I think the ext4 block groups are locked with the blockgroup_lock that has about the same number of locks as the number of cores, with a max of 128, IIRC. See blockgroup_lock.h.
> While there is some chance of contention, it is also unlikely that all of the cores are locking this area at the same time.
> Cheers, Andreas

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