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[XFS] revert to double-buffering readdir
authorChristoph Hellwig <hch@infradead.org>
Fri, 7 Dec 2007 03:07:53 +0000 (14:07 +1100)
committerLachlan McIlroy <lachlan@redback.melbourne.sgi.com>
Mon, 10 Dec 2007 02:47:15 +0000 (13:47 +1100)
The current readdir implementation deadlocks on a btree buffers locks
because nfsd calls back into ->lookup from the filldir callback. The only
short-term fix for this is to revert to the old inefficient
double-buffering scheme.

SGI-PV: 973377
SGI-Modid: xfs-linux-melb:xfs-kern:30201a

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

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