btrfs: add dummy callback for readpage_io_failed and drop checks

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Make extent_io_ops::readpage_io_failed_hook callback mandatory and
define a dummy function for btrfs_extent_io_ops. As the failed IO
callback is not performance critical, the branch vs extra trade off does
not hurt.

Signed-off-by: David Sterba <dsterba@suse.com>

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This commit is contained in:

David Sterba 2017-02-17 16:24:29 +01:00

parent 20c9801d39

commit 20a7db8ab3

4 changed files with 10 additions and 3 deletions

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2

fs/btrfs/disk-io.c

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2

fs/btrfs/extent_io.c

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2

fs/btrfs/extent_io.h

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7

fs/btrfs/inode.c

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