Messages in this thread | | | Date | Tue, 4 Nov 2014 10:08:14 +0100 | From | Jan Kara <> | Subject | Re: your patch "mm: Remove false WARN_ON from pagecache_isize_extended()" |
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On Tue 04-11-14 07:40:20, Jan Beulich wrote: > >>> On 03.11.14 at 23:18, <david@fromorbit.com> wrote: > > On Mon, Nov 03, 2014 at 04:41:13PM +0000, Jan Beulich wrote: > >> having run into that warning too, I looked into it a little, and now > >> having found that patch am pretty uncertain: Both truncate_setsize() > >> and pagecache_isize_extended() document that they want to be > >> called with i_mutex held, so removing the WARN_ON() alone seems > >> either incomplete or wrong. What I found to work without violating > >> this documented requirement is the patch below. > > > > Or, just perhaps, the comments are wrong.... > > Right - that's what I was suggesting with the option of the patch > being incomplete (rather than just removing the WARN_ON() it > should also remove the respective comments then). Yeah, I'll update the comments to mention there are filesystem which use serialization different from i_mutex. Thanks for catching this.
Honza -- Jan Kara <jack@suse.cz> SUSE Labs, CR
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