btrfs: Remove unused readahead spinlock

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The reada_lock in struct btrfs_device was only initialised, and not
actually used.  That's good because there's another lock also called
reada_lock in the btrfs_fs_info that was quite heavily used.  Remove
this one.

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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Matthew Wilcox 2018-01-17 12:21:49 -08:00 • committed by David Sterba

parent 7583d8d088

commit 3cbf26da5e

2 changed files with 0 additions and 2 deletions

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fs/btrfs/volumes.c

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fs/btrfs/volumes.h

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