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From: Jan Kara <jack@suse.cz>
To: Ted Tso <tytso@mit.edu>
Cc: <linux-ext4@vger.kernel.org>,
	Christoph Hellwig <hch@infradead.org>,
	Ritesh Harjani <ritesh.list@gmail.com>, Jan Kara <jack@suse.cz>
Subject: [PATCH v2 4/11] ext4: Drop pointless IO submission from ext4_bio_write_page()
Date: Fri,  2 Dec 2022 19:39:29 +0100	[thread overview]
Message-ID: <20221202183943.22640-4-jack@suse.cz> (raw)
In-Reply-To: <20221202163815.22928-1-jack@suse.cz>

We submit outstanding IO in ext4_bio_write_page() if we find a buffer we
are not going to write. This is however pointless because we already
handle submission of previous IO in case we detect newly added buffer
head is discontiguous. So just delete the pointless IO submission call.

Reviewed-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
---
 fs/ext4/page-io.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c
index 2bdfb8a046d9..beaec6d81074 100644
--- a/fs/ext4/page-io.c
+++ b/fs/ext4/page-io.c
@@ -489,8 +489,6 @@ int ext4_bio_write_page(struct ext4_io_submit *io,
 					redirty_page_for_writepage(wbc, page);
 				keep_towrite = true;
 			}
-			if (io->io_bio)
-				ext4_io_submit(io);
 			continue;
 		}
 		if (buffer_new(bh))
-- 
2.35.3


  parent reply	other threads:[~2022-12-02 18:42 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-12-02 18:39 [PATCH v2 0/11] ext4: Stop using ext4_writepage() for writeout of ordered data Jan Kara
2022-12-02 18:39 ` [PATCH v2 1/11] ext4: Handle redirtying in ext4_bio_write_page() Jan Kara
2022-12-02 18:39 ` [PATCH v2 2/11] ext4: Move keep_towrite handling to ext4_bio_write_page() Jan Kara
2022-12-02 18:39 ` [PATCH v2 3/11] ext4: Remove nr_submitted from ext4_bio_write_page() Jan Kara
2022-12-02 18:39 ` Jan Kara [this message]
2022-12-02 18:39 ` [PATCH v2 5/11] ext4: Add support for writepages calls that cannot map blocks Jan Kara
2022-12-02 18:39 ` [PATCH v2 6/11] ext4: Provide ext4_do_writepages() Jan Kara
2022-12-02 18:39 ` [PATCH v2 7/11] ext4: Move percpu_rwsem protection into ext4_writepages() Jan Kara
2022-12-02 18:39 ` [PATCH v2 8/11] ext4: Switch to using ext4_do_writepages() for ordered data writeout Jan Kara
2022-12-02 18:39 ` [PATCH v2 9/11] ext4: Switch to using write_cache_pages() for data=journal writeout Jan Kara
2022-12-04  6:58   ` Christoph Hellwig
2022-12-05 10:07     ` Jan Kara
2022-12-02 18:39 ` [PATCH v2 0/11] ext4: Stop providing .writepage hook Jan Kara
2022-12-04  6:59   ` Christoph Hellwig
2022-12-02 18:39 ` [PATCH v2 1/11] ext4: Remove ordered data support from ext4_writepage() Jan Kara
2022-12-04  7:06   ` Christoph Hellwig
2022-12-05 10:17     ` Jan Kara
2022-12-03  0:52 ` [PATCH v2 0/11] ext4: Stop using ext4_writepage() for writeout of ordered data Ritesh Harjani
2022-12-05  9:13   ` Jan Kara
2022-12-04  6:56 ` Christoph Hellwig

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