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btrfs: store precalculated csum_size in fs_info
authorDavid Sterba <dsterba@suse.com>
Thu, 2 Jul 2020 09:10:18 +0000 (11:10 +0200)
committerDavid Sterba <dsterba@suse.com>
Tue, 8 Dec 2020 14:53:58 +0000 (15:53 +0100)
commit22b6331d961712ac2735423e5a6c04e9d0fd7897
treefa75be6649cd24450abcd3d9367a15bb0560e01dtree | snapshot
parent265fdfa6ce0a79df3b880bbf39d9a00a0435687fcommit | diff
btrfs: store precalculated csum_size in fs_info

In many places we need the checksum size and it is inefficient to read
it from the raw superblock. Store the value into fs_info, actual use
will be in followup patches.  The size is u32 as it allows to generate
better assembly than with u16.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>
fs/btrfs/ctree.h diff | blob | history
fs/btrfs/disk-io.c diff | blob | history
ep93xx device tree rework repo: git://git.maquefel.me/linux.git