From: Daniel Dressler <danieru.dressler@gmail.com>
Date: Wed, 12 Nov 2014 04:43:09 +0000 (+0900)
Subject: Btrfs: ctree: reduce args where only fs_info used
X-Git-Tag: omap-for-v4.1/fixes-rc1~43^2~58^2~20
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b7a0365ec7a0fb1d39113846fd34038af68ebd01;p=pandora-kernel.git

Btrfs: ctree: reduce args where only fs_info used

This patch is part of a larger project to cleanup btrfs's internal usage
of struct btrfs_root. Many functions take btrfs_root only to grab a
pointer to fs_info.

This causes programmers to ponder which root can be passed. Since only
the fs_info is read affected functions can accept any root, except this
is only obvious upon inspection.

This patch reduces the specificty of such functions to accept the
fs_info directly.

This patch does not address the two functions in ctree.c (insert_ptr,
and split_item) which only use root for BUG_ONs in ctree.c

This patch affects the following functions:
  1) fixup_low_keys
  2) btrfs_set_item_key_safe

Signed-off-by: Daniel Dressler <danieru.dressler@gmail.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
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