The patch titled
mm: expose BDI statistics in sysfs.
has been removed from the -mm tree. Its filename was
mm-expose-bdi-statistics-in-sysfs.patch
This patch was dropped because an updated version will be merged
------------------------------------------------------
Subject: mm: expose BDI statistics in sysfs.
From: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Expose the per BDI stats in /sys/block/<dev>/queue/*
Signed-off-by: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
block/ll_rw_blk.c | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff -puN block/ll_rw_blk.c~mm-expose-bdi-statistics-in-sysfs block/ll_rw_blk.c
--- a/block/ll_rw_blk.c~mm-expose-bdi-statistics-in-sysfs
+++ a/block/ll_rw_blk.c
@@ -3923,6 +3923,15 @@ static ssize_t queue_max_hw_sectors_show
return queue_var_show(max_hw_sectors_kb, (page));
}
+static ssize_t queue_nr_reclaimable_show(struct request_queue *q, char *page)
+{
+ return sprintf(page, "%lld\n", bdi_stat(&q->backing_dev_info, BDI_RECLAIMABLE));
+}
+
+static ssize_t queue_nr_writeback_show(struct request_queue *q, char *page)
+{
+ return sprintf(page, "%lld\n", bdi_stat(&q->backing_dev_info, BDI_WRITEBACK));
+}
static struct queue_sysfs_entry queue_requests_entry = {
.attr = {.name = "nr_requests", .mode = S_IRUGO | S_IWUSR },
@@ -3947,6 +3956,16 @@ static struct queue_sysfs_entry queue_ma
.show = queue_max_hw_sectors_show,
};
+static struct queue_sysfs_entry queue_reclaimable_entry = {
+ .attr = {.name = "reclaimable_pages", .mode = S_IRUGO },
+ .show = queue_nr_reclaimable_show,
+};
+
+static struct queue_sysfs_entry queue_writeback_entry = {
+ .attr = {.name = "writeback_pages", .mode = S_IRUGO },
+ .show = queue_nr_writeback_show,
+};
+
static struct queue_sysfs_entry queue_iosched_entry = {
.attr = {.name = "scheduler", .mode = S_IRUGO | S_IWUSR },
.show = elv_iosched_show,
@@ -3958,6 +3977,8 @@ static struct attribute *default_attrs[]
&queue_ra_entry.attr,
&queue_max_hw_sectors_entry.attr,
&queue_max_sectors_entry.attr,
+ &queue_reclaimable_entry.attr,
+ &queue_writeback_entry.attr,
&queue_iosched_entry.attr,
NULL,
};
_
Patches currently in -mm which might be from a.p.zijlstra@xxxxxxxxx are
lumpy-reclaim-v4.patch
split-mmap.patch
only-allow-nonlinear-vmas-for-ram-backed-filesystems.patch
mm-remove-destroy_dirty_buffers-from-invalidate_bdev.patch
mm-optimize-kill_bdev.patch
mm-optimize-kill_bdev-fix.patch
mm-optimize-acorn-partition-truncate.patch
lazy-freeing-of-memory-through-madv_free.patch
lazy-freeing-of-memory-through-madv_free-fix.patch
lazy-freeing-of-memory-through-madv_free-vs-mm-madvise-avoid-exclusive-mmap_sem.patch
restore-madv_dontneed-to-its-original-linux-behaviour.patch
exec-fix-remove_arg_zero-add-comment.patch
lockdep-treats-down_write_trylock-like-regular-down_write.patch
nfs-fix-congestion-control-use-atomic_longs.patch
mm-expose-bdi-statistics-in-sysfs.patch
mm-expose-bdi-statistics-in-sysfs-printk-fixes.patch
mm-per-device-dirty-threshold.patch
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