lwn.git/fs/btrfs/reada.c, branch v4.16-rc5

btrfs: remove unused member err from reada_extent

2017-06-19T16:25:59+00:00

Seems to be unused since the initial commit, we ignore readahead errors anyway, the full read will handle that if necessary. Signed-off-by: David Sterba

btrfs: remove local blocksize variable in reada_find_extent

2017-04-18T12:07:25+00:00

The name is misleading and the local variable serves no purpose. Reviewed-by: Liu Bo Signed-off-by: David Sterba

btrfs: remove redundant parameter from reada_start_machine_dev

2017-04-18T12:07:25+00:00

We can read fs_info from dev. Reviewed-by: Liu Bo Signed-off-by: David Sterba

btrfs: remove redundant parameter from reada_find_zone

2017-04-18T12:07:25+00:00

We can read fs_info from dev. Reviewed-by: Liu Bo Signed-off-by: David Sterba

btrfs: remove redundant parameter from btree_readahead_hook

2017-04-18T12:07:25+00:00

We can read fs_info from eb. Reviewed-by: Liu Bo Signed-off-by: David Sterba

btrfs: preallocate radix tree node for global readahead tree

2017-04-18T12:07:25+00:00

We can preallocate the node so insertion does not have to do that under the lock. The GFP flags for the global radix tree are initialized to GFP_NOFS & ~__GFP_DIRECT_RECLAIM but we can use GFP_KERNEL, because readahead is optional and not on any critical writeout path. Reviewed-by: Liu Bo Signed-off-by: David Sterba

btrfs: preallocate radix tree node for readahead

2017-04-18T12:07:25+00:00

We can preallocate the node so insertion does not have to do that under the lock. The GFP flags for the per-device radix tree are initialized to GFP_NOFS & ~__GFP_DIRECT_RECLAIM but we can use GFP_KERNEL, same as an allocation above anyway, but also because readahead is optional and not on any critical writeout path. Reviewed-by: Liu Bo Signed-off-by: David Sterba

btrfs: take an fs_info directly when the root is not used otherwise

2016-12-06T15:06:59+00:00

There are loads of functions in btrfs that accept a root parameter but only use it to obtain an fs_info pointer. Let's convert those to just accept an fs_info pointer directly. Signed-off-by: Jeff Mahoney Signed-off-by: David Sterba

btrfs: root->fs_info cleanup, add fs_info convenience variables

2016-12-06T15:06:59+00:00

In routines where someptr->fs_info is referenced multiple times, we introduce a convenience variable. This makes the code considerably more readable. Signed-off-by: Jeff Mahoney Signed-off-by: David Sterba

btrfs: pull node/sector/stripe sizes out of root and into fs_info

2016-12-06T15:06:58+00:00

We track the node sizes per-root, but they never vary from the values in the superblock. This patch messes with the 80-column style a bit, but subsequent patches to factor out root->fs_info into a convenience variable fix it up again. Signed-off-by: Jeff Mahoney Signed-off-by: David Sterba