kernel: remove PF_FLUSHER

PF_FLUSHER is only ever set, not tested, remove it.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

3 files changed, 2 insertions, 3 deletions

diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index b5aae4bd0aca..9e46aec10d1a 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -794,7 +794,7 @@ 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 --git a/include/linux/sched.h b/include/linux/sched.h
index 56154bbb8da9..393ce94e54b7 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1706,7 +1706,6 @@ extern void thread_group_times(struct task_struct *p, cputime_t *ut, cputime_t *
 #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 --git a/mm/backing-dev.c b/mm/backing-dev.c
index 5ad3c106606b..f2eb27884ffa 100644
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -362,7 +362,7 @@ static int bdi_forker_thread(void *ptr)
 {
         struct bdi_writeback *me = ptr;
 
-        current->flags |= PF_FLUSHER | PF_SWAPWRITE;
+        current->flags |= PF_SWAPWRITE;
         set_freezable();
 
         /*