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Message-ID: <52F7DB21.2050204@hp.com> Date: Sun, 09 Feb 2014 12:46:41 -0700 From: Thavatchai Makphaibulchoke <thavatchai.makpahibulchoke@...com> To: Andreas Dilger <adilger@...ger.ca>, Andi Kleen <andi@...stfloor.org> CC: T Makphaibulchoke <tmac@...com>, "viro@...iv.linux.org.uk" <viro@...iv.linux.org.uk>, "tytso@....edu" <tytso@....edu>, "adilger.kernel@...ger.ca" <adilger.kernel@...ger.ca>, "linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>, "aswin@...com" <aswin@...com> Subject: Re: [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 > -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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