btrfs: optimize simple reads in btrfsic_map_block

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Pass a smap into __btrfs_map_block so that the usual case of a read that
doesn't require parity raid recovery doesn't need an extra memory
allocation for the btrfs_io_context.

Reviewed-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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Christoph Hellwig 2023-05-31 06:17:35 +02:00 • committed by David Sterba

parent 3965a4c793

commit 78a213a05d

1 changed files with 12 additions and 7 deletions

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fs/btrfs/check-integrity.c

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