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authorAndrew Morton <akpm@osdl.org>2005-11-16 15:07:01 -0800
committerTrond Myklebust <Trond.Myklebust@netapp.com>2006-01-06 14:58:38 -0500
commit22905f775dd6a8b73be99826dcad07ceec00244b (patch)
tree960c0ad3d10fa208a31b78256788f332e5ebdd48 /include/linux/writeback.h
parentd99cf9d679a520d67f81d805b7cb91c68e1847f0 (diff)
downloadlwn-22905f775dd6a8b73be99826dcad07ceec00244b.tar.gz
lwn-22905f775dd6a8b73be99826dcad07ceec00244b.zip
identify multipage ->writepages() calls
NFS needs to be able to distinguish between single-page ->writepage() calls and multipage ->writepages() calls. For the single-page writepage calls NFS can kick off the I/O within the context of ->writepage(). For multipage ->writepages calls, nfs_writepage() will leave the I/O pending and nfs_writepages() will kick off the I/O when it all has been queued up within NFS. Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'include/linux/writeback.h')
-rw-r--r--include/linux/writeback.h9
1 files changed, 5 insertions, 4 deletions
diff --git a/include/linux/writeback.h b/include/linux/writeback.h
index 64a36ba43b2f..b096159086e8 100644
--- a/include/linux/writeback.h
+++ b/include/linux/writeback.h
@@ -53,10 +53,11 @@ struct writeback_control {
loff_t start;
loff_t end;
- unsigned nonblocking:1; /* Don't get stuck on request queues */
- unsigned encountered_congestion:1; /* An output: a queue is full */
- unsigned for_kupdate:1; /* A kupdate writeback */
- unsigned for_reclaim:1; /* Invoked from the page allocator */
+ unsigned nonblocking:1; /* Don't get stuck on request queues */
+ unsigned encountered_congestion:1; /* An output: a queue is full */
+ unsigned for_kupdate:1; /* A kupdate writeback */
+ unsigned for_reclaim:1; /* Invoked from the page allocator */
+ unsigned for_writepages:1; /* This is a writepages() call */
};
/*