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Message-ID: <20150615042554.GH15793@thunk.org> Date: Mon, 15 Jun 2015 00:25:54 -0400 From: Theodore Ts'o <tytso@....edu> To: Lukas Czerner <lczerner@...hat.com> Cc: linux-ext4@...r.kernel.org Subject: Re: [PATCH 2/2] ext4: Wait for existing dio workers in ext4_alloc_file_blocks() On Tue, Jun 09, 2015 at 08:58:46AM +0200, Lukas Czerner wrote: > Currently existing dio workers can jump in and potentially increase > extent tree depth while we're allocating blocks in > ext4_alloc_file_blocks(). This may cause us to underestimate the number > of credits needed for the transaction because the extent tree depth can > change after our estimation. > > Fix this by waiting for all the existing dio workers in the same way as > we do it in ext4_punch_hole. We've seen errors caused by this in xfstest > generic/299, however it's really hard to reproduce. > > Signed-off-by: Lukas Czerner <lczerner@...hat.com> 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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