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| author | Alex Ng <alexng@messages.microsoft.com> | 2016-08-25 02:23:13 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-08-31 14:05:42 +0300 |
| commit | b605c2d913589c448d4a6887262bb8e99da12009 (patch) | |
| tree | de54029493ed5ce34d1918b329a5c089145eb21b /drivers/hv/hv_balloon.c | |
| parent | eece30b9f0046cee810a2c7caa2247f3f8dc85e2 (diff) | |
| download | linux-b605c2d913589c448d4a6887262bb8e99da12009.tar.xz | |
Drivers: hv: balloon: Use available memory value in pressure report
Reports for available memory should use the si_mem_available() value.
The previous freeram value does not include available page cache memory.
Signed-off-by: Alex Ng <alexng@messages.microsoft.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hv/hv_balloon.c')
| -rw-r--r-- | drivers/hv/hv_balloon.c | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/drivers/hv/hv_balloon.c b/drivers/hv/hv_balloon.c index d55e0e7650bf..fdf8da929cbe 100644 --- a/drivers/hv/hv_balloon.c +++ b/drivers/hv/hv_balloon.c @@ -1075,7 +1075,6 @@ static unsigned long compute_balloon_floor(void) static void post_status(struct hv_dynmem_device *dm) { struct dm_status status; - struct sysinfo val; unsigned long now = jiffies; unsigned long last_post = last_post_time; @@ -1087,7 +1086,6 @@ static void post_status(struct hv_dynmem_device *dm) if (!time_after(now, (last_post_time + HZ))) return; - si_meminfo(&val); memset(&status, 0, sizeof(struct dm_status)); status.hdr.type = DM_STATUS_REPORT; status.hdr.size = sizeof(struct dm_status); @@ -1103,7 +1101,7 @@ static void post_status(struct hv_dynmem_device *dm) * num_pages_onlined) as committed to the host, otherwise it can try * asking us to balloon them out. */ - status.num_avail = val.freeram; + status.num_avail = si_mem_available(); status.num_committed = vm_memory_committed() + dm->num_pages_ballooned + (dm->num_pages_added > dm->num_pages_onlined ? @@ -1209,7 +1207,7 @@ static void balloon_up(struct work_struct *dummy) int ret; bool done = false; int i; - struct sysinfo val; + long avail_pages; unsigned long floor; /* The host balloons pages in 2M granularity. */ @@ -1221,12 +1219,12 @@ static void balloon_up(struct work_struct *dummy) */ alloc_unit = 512; - si_meminfo(&val); + avail_pages = si_mem_available(); floor = compute_balloon_floor(); /* Refuse to balloon below the floor, keep the 2M granularity. */ - if (val.freeram < num_pages || val.freeram - num_pages < floor) { - num_pages = val.freeram > floor ? (val.freeram - floor) : 0; + if (avail_pages < num_pages || avail_pages - num_pages < floor) { + num_pages = avail_pages > floor ? (avail_pages - floor) : 0; num_pages -= num_pages % PAGES_IN_2M; } @@ -1237,7 +1235,6 @@ static void balloon_up(struct work_struct *dummy) bl_resp->hdr.size = sizeof(struct dm_balloon_response); bl_resp->more_pages = 1; - num_pages -= num_ballooned; num_ballooned = alloc_balloon_pages(&dm_device, num_pages, bl_resp, alloc_unit); |