[XFS] Per iclog callback chain lock

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Rather than use the icloglock for protecting the iclog completion callback
chain, use a new per-iclog lock so that walking the callback chain doesn't
require holding a global lock.

This reduces contention on the icloglock during transaction commit and log
I/O completion by reducing the number of times we need to hold the global
icloglock during these operations.

SGI-PV: 978729
SGI-Modid: xfs-linux-melb:xfs-kern:30770a

Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>

...

This commit is contained in:

David Chinner 2008-04-10 12:18:39 +10:00 • committed by Lachlan McIlroy

parent 2abdb8c881

commit 114d23aae5

2 changed files with 45 additions and 23 deletions

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35

fs/xfs/xfs_log.c

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33

fs/xfs/xfs_log_priv.h

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