Dave Chinner 0b5649278e writeback: pay attention to wbc->nr_to_write in write_cache_pages ... If a filesystem writes more than one page in ->writepage, write_cache_pages fails to notice this and continues to attempt writeback when wbc->nr_to_write has gone negative - this trace was captured from XFS: wbc_writeback_start: towrt=1024 wbc_writepage: towrt=1024 wbc_writepage: towrt=0 wbc_writepage: towrt=-1 wbc_writepage: towrt=-5 wbc_writepage: towrt=-21 wbc_writepage: towrt=-85 This has adverse effects on filesystem writeback behaviour. write_cache_pages() needs to terminate after a certain number of pages are written, not after a certain number of calls to ->writepage are made. This is a regression introduced by 17bc6c30cf ("vfs: Add no_nrwrite_index_update writeback control flag"), but cannot be reverted directly due to subsequent bug fixes that have gone in on top of it. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2010-06-08 18:12:44 -07:00
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events	writeback: pay attention to wbc->nr_to_write in write_cache_pages	2010-06-08 18:12:44 -07:00
boot.h
define_trace.h
ftrace.h	perf_events, trace: Fix probe unregister race	2010-05-31 08:46:09 +02:00
syscall.h