linux.git/drivers/md/bcache/writeback.c, branch v3.13-rc2

bcache: Fix sysfs splat on shutdown with flash only devs

2013-11-11T05:56:41+00:00

Whoops.

Signed-off-by: Kent Overstreet

bcache: Better full stripe scanning

2013-11-11T05:56:41+00:00

The old scanning-by-stripe code burned too much CPU, this should be
better.

Signed-off-by: Kent Overstreet

bcache: Convert bch_btree_insert() to bch_btree_map_leaf_nodes()

2013-11-11T05:56:31+00:00

Last of the btree_map() conversions. Main visible effect is
bch_btree_insert() is no longer taking a struct btree_op as an argument
anymore - there's no fancy state machine stuff going on, it's just a
normal function.

Signed-off-by: Kent Overstreet

bcache: Don't use op->insert_collision

2013-11-11T05:56:30+00:00

When we convert bch_btree_insert() to bch_btree_map_leaf_nodes(), we
won't be passing struct btree_op to bch_btree_insert() anymore - so we
need a different way of returning whether there was a collision (really,
a replace collision).

Signed-off-by: Kent Overstreet

bcache: Kill op->replace

2013-11-11T05:56:29+00:00

This is prep work for converting bch_btree_insert to
bch_btree_map_leaf_nodes() - we have to convert all its arguments to
actual arguments. Bunch of churn, but should be straightforward.

Signed-off-by: Kent Overstreet

bcache: Kill op->cl

2013-11-11T05:56:09+00:00

This isn't used for waiting asynchronously anymore - so this is a fairly
trivial refactoring.

Signed-off-by: Kent Overstreet

bcache: Prune struct btree_op

2013-11-11T05:56:08+00:00

Eventual goal is for struct btree_op to contain only what is necessary
for traversing the btree.

Signed-off-by: Kent Overstreet

bcache: Add btree_map() functions

2013-11-11T05:56:06+00:00

Lots of stuff has been open coding its own btree traversal - which is
generally pretty simple code, but there are a few subtleties.

This adds new new functions, bch_btree_map_nodes() and
bch_btree_map_keys(), which do the traversal for you. Everything that's
open coding btree traversal now (with the exception of garbage
collection) is slowly going to be converted to these two functions;
being able to write other code at a higher level of abstraction  is a
big improvement w.r.t. overall code quality.

Signed-off-by: Kent Overstreet

bcache: Convert writeback to a kthread

2013-11-11T05:56:05+00:00

This simplifies the writeback flow control quite a bit - previously, it
was conceptually two coroutines, refill_dirty() and read_dirty(). This
makes the code quite a bit more straightforward.

Signed-off-by: Kent Overstreet

bcache: Move keylist out of btree_op

2013-11-11T05:56:02+00:00

Slowly working on pruning struct btree_op - the aim is for it to only
contain things that are actually necessary for traversing the btree.

Signed-off-by: Kent Overstreet