xfs: use bios directly to read and write the log recovery buffers

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The xfs_buf structure is basically used as a glorified container for
a memory allocation in the log recovery code.  Replace it with a
call to kmem_alloc_large and a simple abstraction to read into or
write from it synchronously using chained bios.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>

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Christoph Hellwig 2019-06-28 19:27:26 -07:00 • committed by Darrick J. Wong

parent 18ffb8c3f0

commit 6ad5b3255b

4 changed files with 149 additions and 157 deletions

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1

fs/xfs/Makefile

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61

fs/xfs/xfs_bio_io.c

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3

fs/xfs/xfs_linux.h

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245

fs/xfs/xfs_log_recover.c

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