From: Jan Kara <jack@suse.cz> To: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk>, Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>, Ross Zwisler <ross.zwisler@linux.intel.com>, Andrew Morton <akpm@linux-foundation.org>, Jan Kara <jack@suse.cz>, Jens Axboe <axboe@kernel.dk>, Johannes Weiner <hannes@cmpxchg.org>, Alexey Kuznetsov <kuznet@virtuozzo.com>, Christoph Hellwig <hch@lst.de>, Nikolay Borisov <n.borisov.lkml@gmail.com>, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCH v2 3/4] mm/truncate: bail out early from invalidate_inode_pages2_range() if mapping is empty Date: Tue, 25 Apr 2017 10:37:15 +0200 [thread overview] Message-ID: <20170425083715.GD2793@quack2.suse.cz> (raw) In-Reply-To: <20170424164135.22350-4-aryabinin@virtuozzo.com> On Mon 24-04-17 19:41:34, Andrey Ryabinin wrote: > If mapping is empty (both ->nrpages and ->nrexceptional is zero) we can > avoid pointless lookups in empty radix tree and bail out immediately after > cleancache invalidation. > > Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com> > Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Looks good. You can add: Reviewed-by: Jan Kara <jack@suse.cz> Honza > --- > mm/truncate.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/mm/truncate.c b/mm/truncate.c > index 6263aff..8f12b0e 100644 > --- a/mm/truncate.c > +++ b/mm/truncate.c > @@ -624,6 +624,9 @@ int invalidate_inode_pages2_range(struct address_space *mapping, > int did_range_unmap = 0; > > cleancache_invalidate_inode(mapping); > + if (mapping->nrpages == 0 && mapping->nrexceptional == 0) > + return 0; > + > pagevec_init(&pvec, 0); > index = start; > while (index <= end && pagevec_lookup_entries(&pvec, mapping, index, > -- > 2.10.2 > -- Jan Kara <jack@suse.com> SUSE Labs, CR
WARNING: multiple messages have this Message-ID (diff)
From: Jan Kara <jack@suse.cz> To: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk>, Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>, Ross Zwisler <ross.zwisler@linux.intel.com>, Andrew Morton <akpm@linux-foundation.org>, Jan Kara <jack@suse.cz>, Jens Axboe <axboe@kernel.dk>, Johannes Weiner <hannes@cmpxchg.org>, Alexey Kuznetsov <kuznet@virtuozzo.com>, Christoph Hellwig <hch@lst.de>, Nikolay Borisov <n.borisov.lkml@gmail.com>, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCH v2 3/4] mm/truncate: bail out early from invalidate_inode_pages2_range() if mapping is empty Date: Tue, 25 Apr 2017 10:37:15 +0200 [thread overview] Message-ID: <20170425083715.GD2793@quack2.suse.cz> (raw) In-Reply-To: <20170424164135.22350-4-aryabinin@virtuozzo.com> On Mon 24-04-17 19:41:34, Andrey Ryabinin wrote: > If mapping is empty (both ->nrpages and ->nrexceptional is zero) we can > avoid pointless lookups in empty radix tree and bail out immediately after > cleancache invalidation. > > Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com> > Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Looks good. You can add: Reviewed-by: Jan Kara <jack@suse.cz> Honza > --- > mm/truncate.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/mm/truncate.c b/mm/truncate.c > index 6263aff..8f12b0e 100644 > --- a/mm/truncate.c > +++ b/mm/truncate.c > @@ -624,6 +624,9 @@ int invalidate_inode_pages2_range(struct address_space *mapping, > int did_range_unmap = 0; > > cleancache_invalidate_inode(mapping); > + if (mapping->nrpages == 0 && mapping->nrexceptional == 0) > + return 0; > + > pagevec_init(&pvec, 0); > index = start; > while (index <= end && pagevec_lookup_entries(&pvec, mapping, index, > -- > 2.10.2 > -- Jan Kara <jack@suse.com> SUSE Labs, CR -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2017-04-25 8:39 UTC|newest] Thread overview: 144+ messages / expand[flat|nested] mbox.gz Atom feed top 2017-04-14 14:07 [PATCH 0/4] Properly invalidate data in the cleancache Andrey Ryabinin 2017-04-14 14:07 ` Andrey Ryabinin 2017-04-14 14:07 ` Andrey Ryabinin 2017-04-14 14:07 ` Andrey Ryabinin 2017-04-14 14:07 ` [PATCH 1/4] fs: fix data invalidation in the cleancache during direct IO Andrey Ryabinin 2017-04-14 14:07 ` Andrey Ryabinin 2017-04-14 14:07 ` Andrey Ryabinin 2017-04-18 19:38 ` Ross Zwisler 2017-04-18 19:38 ` Ross Zwisler 2017-04-18 19:38 ` Ross Zwisler 2017-04-19 15:11 ` Andrey Ryabinin 2017-04-19 15:11 ` Andrey Ryabinin 2017-04-19 15:11 ` Andrey Ryabinin 2017-04-19 19:28 ` Ross Zwisler 2017-04-19 19:28 ` Ross Zwisler [not found] ` <20170419192836.GA6364-VuQAYsv1563Yd54FQh9/CA@public.gmane.org> 2017-04-20 14:35 ` Jan Kara 2017-04-20 14:35 ` Jan Kara 2017-04-20 14:35 ` Jan Kara [not found] ` <20170420143510.GF22135-4I4JzKEfoa/jFM9bn6wA6Q@public.gmane.org> 2017-04-20 14:44 ` Jan Kara 2017-04-20 14:44 ` Jan Kara 2017-04-20 14:44 ` Jan Kara 2017-04-20 19:14 ` Ross Zwisler 2017-04-20 19:14 ` Ross Zwisler 2017-04-21 3:44 ` [PATCH 1/2] dax: prevent invalidation of mapped DAX entries Ross Zwisler 2017-04-21 3:44 ` Ross Zwisler 2017-04-21 3:44 ` Ross Zwisler 2017-04-21 3:44 ` Ross Zwisler 2017-04-21 3:44 ` Ross Zwisler 2017-04-21 3:44 ` [PATCH 2/2] dax: fix data corruption due to stale mmap reads Ross Zwisler 2017-04-21 3:44 ` Ross Zwisler 2017-04-21 3:44 ` Ross Zwisler 2017-04-21 3:44 ` Ross Zwisler 2017-04-21 3:44 ` Ross Zwisler 2017-04-25 11:10 ` Jan Kara 2017-04-25 11:10 ` Jan Kara 2017-04-25 11:10 ` Jan Kara 2017-04-25 11:10 ` Jan Kara 2017-04-25 11:10 ` Jan Kara 2017-04-25 22:59 ` Ross Zwisler 2017-04-25 22:59 ` Ross Zwisler 2017-04-25 22:59 ` Ross Zwisler 2017-04-25 22:59 ` Ross Zwisler 2017-04-25 22:59 ` Ross Zwisler 2017-04-26 8:52 ` Jan Kara 2017-04-26 8:52 ` Jan Kara 2017-04-26 8:52 ` Jan Kara 2017-04-26 8:52 ` Jan Kara 2017-04-26 8:52 ` Jan Kara 2017-04-26 22:52 ` Ross Zwisler 2017-04-26 22:52 ` Ross Zwisler 2017-04-26 22:52 ` Ross Zwisler 2017-04-26 22:52 ` Ross Zwisler 2017-04-26 22:52 ` Ross Zwisler 2017-04-27 7:26 ` Jan Kara 2017-04-27 7:26 ` Jan Kara 2017-04-27 7:26 ` Jan Kara 2017-04-27 7:26 ` Jan Kara 2017-04-27 7:26 ` Jan Kara 2017-05-01 22:38 ` Ross Zwisler 2017-05-01 22:38 ` Ross Zwisler 2017-05-01 22:38 ` Ross Zwisler 2017-05-01 22:38 ` Ross Zwisler 2017-05-01 22:38 ` Ross Zwisler 2017-05-04 9:12 ` Jan Kara 2017-05-04 9:12 ` Jan Kara 2017-05-04 9:12 ` Jan Kara 2017-05-04 9:12 ` Jan Kara 2017-05-01 22:59 ` Dan Williams 2017-05-01 22:59 ` Dan Williams 2017-05-01 22:59 ` Dan Williams 2017-05-01 22:59 ` Dan Williams 2017-05-01 22:59 ` Dan Williams 2017-04-24 17:49 ` [PATCH 1/2] xfs: fix incorrect argument count check Ross Zwisler 2017-04-24 17:49 ` Ross Zwisler 2017-04-24 17:49 ` Ross Zwisler 2017-04-24 17:49 ` [PATCH 2/2] dax: add regression test for stale mmap reads Ross Zwisler 2017-04-24 17:49 ` Ross Zwisler 2017-04-24 17:49 ` Ross Zwisler 2017-04-25 11:27 ` Eryu Guan 2017-04-25 11:27 ` Eryu Guan 2017-04-25 11:27 ` Eryu Guan 2017-04-25 20:39 ` Ross Zwisler 2017-04-25 20:39 ` Ross Zwisler 2017-04-25 20:39 ` Ross Zwisler 2017-04-26 3:42 ` Eryu Guan 2017-04-26 3:42 ` Eryu Guan 2017-04-26 3:42 ` Eryu Guan 2017-04-25 10:10 ` [PATCH 1/2] dax: prevent invalidation of mapped DAX entries Jan Kara 2017-04-25 10:10 ` Jan Kara 2017-04-25 10:10 ` Jan Kara 2017-04-25 10:10 ` Jan Kara 2017-04-25 10:10 ` Jan Kara 2017-05-01 16:54 ` Ross Zwisler 2017-05-01 16:54 ` Ross Zwisler 2017-05-01 16:54 ` Ross Zwisler 2017-05-01 16:54 ` Ross Zwisler 2017-05-01 16:54 ` Ross Zwisler [not found] ` <20170414140753.16108-2-aryabinin-5HdwGun5lf+gSpxsJD1C4w@public.gmane.org> 2017-04-18 22:46 ` [PATCH 1/4] fs: fix data invalidation in the cleancache during direct IO Andrew Morton 2017-04-18 22:46 ` Andrew Morton 2017-04-18 22:46 ` Andrew Morton 2017-04-18 22:46 ` Andrew Morton 2017-04-19 15:15 ` Andrey Ryabinin 2017-04-19 15:15 ` Andrey Ryabinin 2017-04-19 15:15 ` Andrey Ryabinin 2017-04-14 14:07 ` [PATCH 2/4] fs/block_dev: always invalidate cleancache in invalidate_bdev() Andrey Ryabinin 2017-04-14 14:07 ` Andrey Ryabinin 2017-04-14 14:07 ` Andrey Ryabinin 2017-04-18 18:51 ` Nikolay Borisov 2017-04-18 18:51 ` Nikolay Borisov 2017-04-19 13:22 ` Andrey Ryabinin 2017-04-19 13:22 ` Andrey Ryabinin 2017-04-19 13:22 ` Andrey Ryabinin 2017-04-14 14:07 ` [PATCH 3/4] mm/truncate: bail out early from invalidate_inode_pages2_range() if mapping is empty Andrey Ryabinin 2017-04-14 14:07 ` Andrey Ryabinin 2017-04-14 14:07 ` Andrey Ryabinin 2017-04-14 14:07 ` [PATCH 4/4] mm/truncate: avoid pointless cleancache_invalidate_inode() calls Andrey Ryabinin 2017-04-14 14:07 ` Andrey Ryabinin 2017-04-14 14:07 ` Andrey Ryabinin [not found] ` <20170414140753.16108-1-aryabinin-5HdwGun5lf+gSpxsJD1C4w@public.gmane.org> 2017-04-18 15:24 ` [PATCH 0/4] Properly invalidate data in the cleancache Konrad Rzeszutek Wilk 2017-04-18 15:24 ` Konrad Rzeszutek Wilk 2017-04-18 15:24 ` Konrad Rzeszutek Wilk 2017-04-24 16:41 ` [PATCH v2 " Andrey Ryabinin 2017-04-24 16:41 ` Andrey Ryabinin 2017-04-24 16:41 ` Andrey Ryabinin 2017-04-24 16:41 ` [PATCH v2 1/4] fs: fix data invalidation in the cleancache during direct IO Andrey Ryabinin 2017-04-24 16:41 ` Andrey Ryabinin 2017-04-24 16:41 ` Andrey Ryabinin 2017-04-25 8:25 ` Jan Kara 2017-04-25 8:25 ` Jan Kara 2017-04-24 16:41 ` [PATCH v2 2/4] fs/block_dev: always invalidate cleancache in invalidate_bdev() Andrey Ryabinin 2017-04-24 16:41 ` Andrey Ryabinin 2017-04-24 16:41 ` Andrey Ryabinin 2017-04-25 8:34 ` Jan Kara 2017-04-25 8:34 ` Jan Kara 2017-04-24 16:41 ` [PATCH v2 3/4] mm/truncate: bail out early from invalidate_inode_pages2_range() if mapping is empty Andrey Ryabinin 2017-04-24 16:41 ` Andrey Ryabinin 2017-04-24 16:41 ` Andrey Ryabinin 2017-04-25 8:37 ` Jan Kara [this message] 2017-04-25 8:37 ` Jan Kara 2017-04-24 16:41 ` [PATCH v2 4/4] mm/truncate: avoid pointless cleancache_invalidate_inode() calls Andrey Ryabinin 2017-04-24 16:41 ` Andrey Ryabinin 2017-04-24 16:41 ` Andrey Ryabinin 2017-04-25 8:41 ` Jan Kara 2017-04-25 8:41 ` Jan Kara
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