The patch titled
writeback-merge-for_kupdate-and-for_kupdate-cases-update
has been added to the -mm tree. Its filename is
writeback-merge-for_kupdate-and-for_kupdate-cases-update.patch
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------------------------------------------------------
Subject: writeback-merge-for_kupdate-and-for_kupdate-cases-update
From: Wu Fengguang <fengguang.wu@xxxxxxxxx>
Signed-off-by: Wu Fengguang <fengguang.wu@xxxxxxxxx>
Cc: Dave Chinner <david@xxxxxxxxxxxxx>
Cc: Martin Bligh <mbligh@xxxxxxxxxx>
Cc: Michael Rubin <mrubin@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Cc: Jens Axboe <axboe@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/fs-writeback.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff -puN fs/fs-writeback.c~writeback-merge-for_kupdate-and-for_kupdate-cases-update fs/fs-writeback.c
--- a/fs/fs-writeback.c~writeback-merge-for_kupdate-and-for_kupdate-cases-update
+++ a/fs/fs-writeback.c
@@ -387,7 +387,11 @@ writeback_single_inode(struct inode *ino
requeue_io(inode);
} else {
/*
- * somehow blocked: retry later
+ * Writeback blocked by something other than
+ * congestion. Delay the inode for some time to
+ * avoid spinning on the CPU (100% iowait)
+ * retrying writeback of the dirty page/inode
+ * that cannot be performed immediately.
*/
redirty_tail(inode);
}
_
Patches currently in -mm which might be from fengguang.wu@xxxxxxxxx are
origin.patch
linux-next.patch
fs-inodec-work-around-bug.patch
include-linux-fsh-complete-hexification-of-fmode_-constants.patch
vfs-o_-bit-numbers-uniqueness-check.patch
vfs-introduce-fmode_neg_offset-for-allowing-negative-f_pos.patch
writeback-reduce-calls-to-global_page_state-in-balance_dirty_pages.patch
writeback-reduce-calls-to-global_page_state-in-balance_dirty_pages-update.patch
writeback-avoid-unnecessary-calculation-of-bdi-dirty-thresholds.patch
writeback-avoid-unnecessary-calculation-of-bdi-dirty-thresholds-update.patch
writeback-add-comment-to-the-dirty-limit-functions.patch
writeback-add-comment-to-the-dirty-limit-functions-update.patch
writeback-dont-redirty-tail-an-inode-with-dirty-pages.patch
writeback-fix-queue_io-ordering.patch
writeback-fix-queue_io-ordering-update.patch
writeback-merge-for_kupdate-and-for_kupdate-cases.patch
writeback-merge-for_kupdate-and-for_kupdate-cases-update.patch
vfs-add-super-operation-writeback_inodes.patch
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