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authorJan Kara <jack@suse.cz>2021-09-02 14:53:06 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2021-09-03 09:58:10 -0700
commitfee468fdf41cdf36ba6b5a780e2474d0a3e066ac (patch)
tree701fd0b0ab22a1b8d13996ced2bc161aee27631b /fs/fs-writeback.c
parent633a2abb9e1cd5c95f3b600f4b2c12cce22ae4a0 (diff)
writeback: reliably update bandwidth estimation
Currently we trigger writeback bandwidth estimation from balance_dirty_pages() and from wb_writeback(). However neither of these need to trigger when the system is relatively idle and writeback is triggered e.g. from fsync(2). Make sure writeback estimates happen reliably by triggering them from do_writepages(). Link: https://lkml.kernel.org/r/20210713104716.22868-2-jack@suse.cz Signed-off-by: Jan Kara <jack@suse.cz> Cc: Michael Stapelberg <stapelberg+linux@google.com> Cc: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/fs-writeback.c')
-rw-r--r--fs/fs-writeback.c3
1 files changed, 0 insertions, 3 deletions
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 7439ecd44ac9..867984e778c3 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -2004,7 +2004,6 @@ static long writeback_inodes_wb(struct bdi_writeback *wb, long nr_pages,
static long wb_writeback(struct bdi_writeback *wb,
struct wb_writeback_work *work)
{
- unsigned long wb_start = jiffies;
long nr_pages = work->nr_pages;
unsigned long dirtied_before = jiffies;
struct inode *inode;
@@ -2058,8 +2057,6 @@ static long wb_writeback(struct bdi_writeback *wb,
progress = __writeback_inodes_wb(wb, work);
trace_writeback_written(wb, work);
- wb_update_bandwidth(wb, wb_start);
-
/*
* Did we write something? Try for more
*