The patch titled
kernel: remove PF_FLUSHER
has been added to the -mm tree. Its filename is
kernel-remove-pf_flusher.patch
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The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: kernel: remove PF_FLUSHER
From: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
PF_FLUSHER is only ever set, not tested, remove it.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: Jens Axboe <axboe@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/fs-writeback.c | 2 +-
include/linux/sched.h | 1 -
mm/backing-dev.c | 2 +-
3 files changed, 2 insertions(+), 3 deletions(-)
diff -puN fs/fs-writeback.c~kernel-remove-pf_flusher fs/fs-writeback.c
--- a/fs/fs-writeback.c~kernel-remove-pf_flusher
+++ a/fs/fs-writeback.c
@@ -782,7 +782,7 @@ int bdi_writeback_thread(void *data)
struct backing_dev_info *bdi = wb->bdi;
long pages_written;
- current->flags |= PF_FLUSHER | PF_SWAPWRITE;
+ current->flags |= PF_SWAPWRITE;
set_freezable();
wb->last_active = jiffies;
diff -puN include/linux/sched.h~kernel-remove-pf_flusher include/linux/sched.h
--- a/include/linux/sched.h~kernel-remove-pf_flusher
+++ a/include/linux/sched.h
@@ -1702,7 +1702,6 @@ extern void thread_group_times(struct ta
#define PF_DUMPCORE 0x00000200 /* dumped core */
#define PF_SIGNALED 0x00000400 /* killed by a signal */
#define PF_MEMALLOC 0x00000800 /* Allocating memory */
-#define PF_FLUSHER 0x00001000 /* responsible for disk writeback */
#define PF_USED_MATH 0x00002000 /* if unset the fpu must be initialized before use */
#define PF_FREEZING 0x00004000 /* freeze in progress. do not account to load */
#define PF_NOFREEZE 0x00008000 /* this thread should not be frozen */
diff -puN mm/backing-dev.c~kernel-remove-pf_flusher mm/backing-dev.c
--- a/mm/backing-dev.c~kernel-remove-pf_flusher
+++ a/mm/backing-dev.c
@@ -360,7 +360,7 @@ static int bdi_forker_thread(void *ptr)
{
struct bdi_writeback *me = ptr;
- current->flags |= PF_FLUSHER | PF_SWAPWRITE;
+ current->flags |= PF_SWAPWRITE;
set_freezable();
/*
_
Patches currently in -mm which might be from a.p.zijlstra@xxxxxxxxx are
origin.patch
linux-next.patch
gcc-46-perf-fix-set-but-unused-variables-in-perf.patch
kernel-remove-pf_flusher.patch
kernel-extract-thread-types-from-task_struct-flags.patch
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