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From: Josef Bacik <>
To: <>, <>,
	<>, <>,
Subject: [PATCH 0/9] Sync and VFS scalability improvements
Date: Tue, 10 Mar 2015 15:45:15 -0400	[thread overview]
Message-ID: <> (raw)

These are patches that Dave Chinner wrote two years ago that are still very much
needed today.  I recently ran into a problem where I had millions of inodes that
needed to be evicted at unmount time and it soft locked up the box and kept any
other file system from doing work.  These patches fix this problem by breaking
the inode_sb_list_lock into per-sb, and then converting the per sb inode list
into a list_lru for better scalability.

I've also pulled forward Dave's sync scalability patches which still seem pretty
relevant.  I had to fix a couple of these to bring them forward but I touched
very little and I've preserved the authorship of everything.  I added the
Reviewed-by's that were there when the patches were originally submitted.  I've
run this through xfstests on btrfs and xfs and verified that everything seems to
be working.  If you are interested the original submission can be found here

Finally the last patch is from me and this fixes the softlockup problems I was
seeing on unmount with a large amount of inodes that needed to be evicted.


             reply	other threads:[~2015-03-10 19:47 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-10 19:45 Josef Bacik [this message]
2015-03-10 19:45 ` [PATCH 1/9] writeback: plug writeback at a high level Josef Bacik
2015-03-10 19:45 ` [PATCH 2/9] inode: add IOP_NOTHASHED to avoid inode hash lock in evict Josef Bacik
2015-03-12  9:52   ` Al Viro
2015-03-12 12:18     ` [PATCH] inode: add hlist_fake to avoid the " Josef Bacik
2015-03-12 12:20     ` [PATCH] inode: add hlist_fake to avoid the inode hash lock in evict V2 Josef Bacik
2015-03-14  7:00       ` Jan Kara
2015-03-12 12:24     ` [PATCH 2/9] inode: add IOP_NOTHASHED to avoid inode hash lock in evict Josef Bacik
2015-03-10 19:45 ` [PATCH 3/9] inode: convert inode_sb_list_lock to per-sb Josef Bacik
2015-03-10 19:45 ` [PATCH 4/9] sync: serialise per-superblock sync operations Josef Bacik
2015-03-10 19:45 ` [PATCH 5/9] inode: rename i_wb_list to i_io_list Josef Bacik
2015-03-10 19:45 ` [PATCH 6/9] bdi: add a new writeback list for sync Josef Bacik
2015-03-16 10:14   ` Jan Kara
2015-03-10 19:45 ` [PATCH 7/9] writeback: periodically trim the writeback list Josef Bacik
2015-03-16 10:16   ` Jan Kara
2015-03-16 11:43     ` Jan Kara
2015-03-10 19:45 ` [PATCH 8/9] inode: convert per-sb inode list to a list_lru Josef Bacik
2015-03-16 12:27   ` Jan Kara
2015-03-16 15:34     ` Josef Bacik
2015-03-16 15:48       ` Jan Kara
2015-03-10 19:45 ` [PATCH 9/9] inode: don't softlockup when evicting inodes Josef Bacik
2015-03-16 12:31   ` Jan Kara
2015-03-16 11:39 ` [PATCH 0/9] Sync and VFS scalability improvements Jan Kara
2015-03-25 11:18 ` Mel Gorman

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