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Message-ID: <20150608165037.GN19168@thunk.org> Date: Mon, 8 Jun 2015 12:50:37 -0400 From: Theodore Ts'o <tytso@....edu> To: Jan Kara <jack@...e.cz> Cc: linux-ext4@...r.kernel.org Subject: Re: [PATCH 5/5] jbd2: Speedup jbd2_journal_dirty_metadata() On Thu, Apr 02, 2015 at 03:58:20PM +0200, Jan Kara wrote: > It is often the case that we mark buffer as having dirty metadata when > the buffer is already in that state (frequent for bitmaps, inode table > blocks, superblock). Thus it is unnecessary to contend on grabbing > journal head reference and bh_state lock. Avoid that by checking whether > any modification to the buffer is needed before grabbing any locks or > references. > > Signed-off-by: Jan Kara <jack@...e.cz> Thanks, applied. - Ted -- 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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