09 Jan, 2014
9 commits
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More work to disentangle various code from struct btree
Signed-off-by: Kent Overstreet
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More work to disentangle bset.c from struct btree
Signed-off-by: Kent Overstreet
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Soon, bset.c won't need to depend on struct btree.
Signed-off-by: Kent Overstreet
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Signed-off-by: Kent Overstreet
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More work to disentangle bset.c from the rest of the code:
Signed-off-by: Kent Overstreet
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More refactoring:
node() -> bset_bkey_idx()
end() -> bset_bkey_last()Signed-off-by: Kent Overstreet
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Used this fixed code to find and fix the bug fixed by
a4d885097b0ac0cd1337f171f2d4b83e946094d4.Signed-off-by: Kent Overstreet
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That was a terrible name for a macro, add some better helpers to replace it.
Signed-off-by: Kent Overstreet
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Signed-off-by: Kent Overstreet
24 Nov, 2013
2 commits
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More prep work for immutable biovecs - with immutable bvecs drivers
won't be able to use the biovec directly, they'll need to use helpers
that take into account bio->bi_iter.bi_bvec_done.This updates callers for the new usage without changing the
implementation yet.Signed-off-by: Kent Overstreet
Cc: Jens Axboe
Cc: Geert Uytterhoeven
Cc: Benjamin Herrenschmidt
Cc: Paul Mackerras
Cc: "Ed L. Cashin"
Cc: Nick Piggin
Cc: Lars Ellenberg
Cc: Jiri Kosina
Cc: Paul Clements
Cc: Jim Paris
Cc: Geoff Levand
Cc: Yehuda Sadeh
Cc: Sage Weil
Cc: Alex Elder
Cc: ceph-devel@vger.kernel.org
Cc: Joshua Morris
Cc: Philip Kelleher
Cc: Konrad Rzeszutek Wilk
Cc: Jeremy Fitzhardinge
Cc: Neil Brown
Cc: Martin Schwidefsky
Cc: Heiko Carstens
Cc: linux390@de.ibm.com
Cc: Nagalakshmi Nandigama
Cc: Sreekanth Reddy
Cc: support@lsi.com
Cc: "James E.J. Bottomley"
Cc: Greg Kroah-Hartman
Cc: Alexander Viro
Cc: Steven Whitehouse
Cc: Herton Ronaldo Krzesinski
Cc: Tejun Heo
Cc: Andrew Morton
Cc: Guo Chao
Cc: Asai Thambi S P
Cc: Selvan Mani
Cc: Sam Bradshaw
Cc: Matthew Wilcox
Cc: Keith Busch
Cc: Stephen Hemminger
Cc: Quoc-Son Anh
Cc: Sebastian Ott
Cc: Nitin Gupta
Cc: Minchan Kim
Cc: Jerome Marchand
Cc: Seth Jennings
Cc: "Martin K. Petersen"
Cc: Mike Snitzer
Cc: Vivek Goyal
Cc: "Darrick J. Wong"
Cc: Chris Metcalf
Cc: Jan Kara
Cc: linux-m68k@lists.linux-m68k.org
Cc: linuxppc-dev@lists.ozlabs.org
Cc: drbd-user@lists.linbit.com
Cc: nbd-general@lists.sourceforge.net
Cc: cbe-oss-dev@lists.ozlabs.org
Cc: xen-devel@lists.xensource.com
Cc: virtualization@lists.linux-foundation.org
Cc: linux-raid@vger.kernel.org
Cc: linux-s390@vger.kernel.org
Cc: DL-MPTFusionLinux@lsi.com
Cc: linux-scsi@vger.kernel.org
Cc: devel@driverdev.osuosl.org
Cc: linux-fsdevel@vger.kernel.org
Cc: cluster-devel@redhat.com
Cc: linux-mm@kvack.org
Acked-by: Geoff Levand -
Immutable biovecs are going to require an explicit iterator. To
implement immutable bvecs, a later patch is going to add a bi_bvec_done
member to this struct; for now, this patch effectively just renames
things.Signed-off-by: Kent Overstreet
Cc: Jens Axboe
Cc: Geert Uytterhoeven
Cc: Benjamin Herrenschmidt
Cc: Paul Mackerras
Cc: "Ed L. Cashin"
Cc: Nick Piggin
Cc: Lars Ellenberg
Cc: Jiri Kosina
Cc: Matthew Wilcox
Cc: Geoff Levand
Cc: Yehuda Sadeh
Cc: Sage Weil
Cc: Alex Elder
Cc: ceph-devel@vger.kernel.org
Cc: Joshua Morris
Cc: Philip Kelleher
Cc: Rusty Russell
Cc: "Michael S. Tsirkin"
Cc: Konrad Rzeszutek Wilk
Cc: Jeremy Fitzhardinge
Cc: Neil Brown
Cc: Alasdair Kergon
Cc: Mike Snitzer
Cc: dm-devel@redhat.com
Cc: Martin Schwidefsky
Cc: Heiko Carstens
Cc: linux390@de.ibm.com
Cc: Boaz Harrosh
Cc: Benny Halevy
Cc: "James E.J. Bottomley"
Cc: Greg Kroah-Hartman
Cc: "Nicholas A. Bellinger"
Cc: Alexander Viro
Cc: Chris Mason
Cc: "Theodore Ts'o"
Cc: Andreas Dilger
Cc: Jaegeuk Kim
Cc: Steven Whitehouse
Cc: Dave Kleikamp
Cc: Joern Engel
Cc: Prasad Joshi
Cc: Trond Myklebust
Cc: KONISHI Ryusuke
Cc: Mark Fasheh
Cc: Joel Becker
Cc: Ben Myers
Cc: xfs@oss.sgi.com
Cc: Steven Rostedt
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Len Brown
Cc: Pavel Machek
Cc: "Rafael J. Wysocki"
Cc: Herton Ronaldo Krzesinski
Cc: Ben Hutchings
Cc: Andrew Morton
Cc: Guo Chao
Cc: Tejun Heo
Cc: Asai Thambi S P
Cc: Selvan Mani
Cc: Sam Bradshaw
Cc: Wei Yongjun
Cc: "Roger Pau Monné"
Cc: Jan Beulich
Cc: Stefano Stabellini
Cc: Ian Campbell
Cc: Sebastian Ott
Cc: Christian Borntraeger
Cc: Minchan Kim
Cc: Jiang Liu
Cc: Nitin Gupta
Cc: Jerome Marchand
Cc: Joe Perches
Cc: Peng Tao
Cc: Andy Adamson
Cc: fanchaoting
Cc: Jie Liu
Cc: Sunil Mushran
Cc: "Martin K. Petersen"
Cc: Namjae Jeon
Cc: Pankaj Kumar
Cc: Dan Magenheimer
Cc: Mel Gorman 6
11 Nov, 2013
3 commits
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More testing ftw! Also, now verify mode doesn't break if you read dirty
data.Signed-off-by: Kent Overstreet
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Couple changes:
* Consolidate bch_check_keys() and bch_check_key_order(), and move the
checks that only check_key_order() could do to bch_btree_iter_next().* Get rid of CONFIG_BCACHE_EDEBUG - now, all that code is compiled in
when CONFIG_BCACHE_DEBUG is enabled, and there's now a sysfs file to
flip on the EDEBUG checks at runtime.* Dropped an old not terribly useful check in rw_unlock(), and
refactored/improved a some of the other debug code.Signed-off-by: Kent Overstreet
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With all the recent refactoring around struct btree op struct search has
gotten rather large.But we can now easily break it up in a different way - we break out
struct btree_insert_op which is for inserting data into the cache, and
that's now what the copying gc code uses - struct search is now specific
to request.cSigned-off-by: Kent Overstreet
02 Jul, 2013
2 commits
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Some of bcache's utility code has made it into the rest of the kernel,
so drop the bcache versions.Bcache used to have a workaround for allocating from a bio set under
generic_make_request() (if you allocated more than once, the bios you
already allocated would get stuck on current->bio_list when you
submitted, and you'd risk deadlock) - bcache would mask out __GFP_WAIT
when allocating bios under generic_make_request() so that allocation
could fail and it could retry from workqueue. But bio_alloc_bioset() has
a workaround now, so we can drop this hack and the associated error
handling.Signed-off-by: Kent Overstreet
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This code has rotted and it hasn't been used in ages anyways.
Signed-off-by: Kent Overstreet
27 Jun, 2013
3 commits
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Now that we're tracking dirty data per stripe, we can add two
optimizations for raid5/6:* If a stripe is already dirty, force writes to that stripe to
writeback mode - to help build up full stripes of dirty data* When flushing dirty data, preferentially write out full stripes first
if there are any.Signed-off-by: Kent Overstreet
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Old gcc doesnt like the struct hack, and it is kind of ugly. So finish
off the work to convert pr_debug() statements to tracepoints, and delete
pkey()/pbtree().Signed-off-by: Kent Overstreet
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The most significant change is that btree reads are now done
synchronously, instead of asynchronously and doing the post read stuff
from a workqueue.This was originally done because we can't block on IO under
generic_make_request(). But - we already have a mechanism to punt cache
lookups to workqueue if needed, so if we just use that we don't have to
deal with the complexity of doing things asynchronously.The main benefit is this makes the locking situation saner; we can hold
our write lock on the btree node until we're finished reading it, and we
don't need that btree_node_read_done() flag anymore.Also, for writes, btree_write() was broken out into btree_node_write()
and btree_leaf_dirty() - the old code with the boolean argument was dumb
and confusing.The prio_blocked mechanism was improved a bit too, now the only counter
is in struct btree_write, we don't mess with transfering a count from
struct btree anymore.This required changing garbage collection to block prios at the start
and unblock when it finishes, which is cleaner than what it was doing
anyways (the old code had mostly the same effect, but was doing it in a
convoluted way)And the btree iter btree_node_read_done() uses was converted to a real
mempool.Signed-off-by: Kent Overstreet
09 Apr, 2013
2 commits
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Reported-by:
Signed-off-by: Kent Overstreet -
Signed-off-by: Kent Overstreet
29 Mar, 2013
1 commit
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Signed-off-by: Kent Overstreet
Cc: linux-bcache@vger.kernel.org
Signed-off-by: Jens Axboe
26 Mar, 2013
1 commit
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Took out some nested functions, and fixed some more checkpatch
complaints.Signed-off-by: Kent Overstreet
Cc: linux-bcache@vger.kernel.org
Signed-off-by: Jens Axboe
24 Mar, 2013
1 commit
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Does writethrough and writeback caching, handles unclean shutdown, and
has a bunch of other nifty features motivated by real world usage.See the wiki at http://bcache.evilpiepirate.org for more.
Signed-off-by: Kent Overstreet