OpenCloudOS-Kernel/include/trace
Wu Fengguang d46db3d582 writeback: make writeback_control.nr_to_write straight
Pass struct wb_writeback_work all the way down to writeback_sb_inodes(),
and initialize the struct writeback_control there.

struct writeback_control is basically designed to control writeback of a
single file, but we keep abuse it for writing multiple files in
writeback_sb_inodes() and its callers.

It immediately clean things up, e.g. suddenly wbc.nr_to_write vs
work->nr_pages starts to make sense, and instead of saving and restoring
pages_skipped in writeback_sb_inodes it can always start with a clean
zero value.

It also makes a neat IO pattern change: large dirty files are now
written in the full 4MB writeback chunk size, rather than whatever
remained quota in wbc->nr_to_write.

Acked-by: Jan Kara <jack@suse.cz>
Proposed-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
2011-07-09 22:09:01 -07:00
..
events writeback: make writeback_control.nr_to_write straight 2011-07-09 22:09:01 -07:00
define_trace.h tracing: Include module.h in define_trace.h 2011-01-07 15:44:56 -05:00
ftrace.h tracing: Add __print_symbolic_u64 to avoid warnings on 32bit machine 2011-05-25 22:13:44 -04:00
syscall.h tracing: Use a global field list for all syscall exit events 2010-06-28 17:12:44 -04:00