xfs: introduce new internal log vector structure

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The current log IO vector structure is a flat array and not
extensible. To make it possible to keep separate log IO vectors for
individual log items, we need a method of chaining log IO vectors
together.

Introduce a new log vector type that can be used to wrap the
existing log IO vectors on use that internally to the log. This
means that the existing external interface (xfs_log_write) does not
change and hence no changes to the transaction commit code are
required.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>

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Dave Chinner 2010-03-23 11:43:17 +11:00 • committed by Alex Elder

parent 99428ad0f6

commit 55b66332d0

2 changed files with 90 additions and 59 deletions

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143

fs/xfs/xfs_log.c

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6

fs/xfs/xfs_log.h

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