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| author | Dave Airlie <airlied@redhat.com> | 2014-12-08 10:33:52 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2014-12-08 10:33:52 +1000 |
| commit | 8c8639447063ddaa7966b0effd6029037fc86599 (patch) | |
| tree | 33f948ef3502faa964aca24fd88daa37c43e9d30 /mm/vmpressure.c | |
| parent | 7608867d0c4d9da30e9efe6a53ff4ee1e6c4990b (diff) | |
| parent | b2776bf7149bddd1f4161f14f79520f17fc1d71d (diff) | |
| download | linux-stable-8c8639447063ddaa7966b0effd6029037fc86599.tar.gz linux-stable-8c8639447063ddaa7966b0effd6029037fc86599.tar.bz2 linux-stable-8c8639447063ddaa7966b0effd6029037fc86599.zip | |
Merge tag 'v3.18' into drm-next
Linux 3.18
Backmerge Linus tree into -next as we had conflicts in i915/radeon/nouveau,
and everyone was solving them individually.
* tag 'v3.18': (57 commits)
Linux 3.18
watchdog: s3c2410_wdt: Fix the mask bit offset for Exynos7
uapi: fix to export linux/vm_sockets.h
i2c: cadence: Set the hardware time-out register to maximum value
i2c: davinci: generate STP always when NACK is received
ahci: disable MSI on SAMSUNG 0xa800 SSD
context_tracking: Restore previous state in schedule_user
slab: fix nodeid bounds check for non-contiguous node IDs
lib/genalloc.c: export devm_gen_pool_create() for modules
mm: fix anon_vma_clone() error treatment
mm: fix swapoff hang after page migration and fork
fat: fix oops on corrupted vfat fs
ipc/sem.c: fully initialize sem_array before making it visible
drivers/input/evdev.c: don't kfree() a vmalloc address
cxgb4: Fill in supported link mode for SFP modules
xen-netfront: Remove BUGs on paged skb data which crosses a page boundary
mm/vmpressure.c: fix race in vmpressure_work_fn()
mm: frontswap: invalidate expired data on a dup-store failure
mm: do not overwrite reserved pages counter at show_mem()
drm/radeon: kernel panic in drm_calc_vbltimestamp_from_scanoutpos with 3.18.0-rc6
...
Conflicts:
drivers/gpu/drm/i915/intel_display.c
drivers/gpu/drm/nouveau/nouveau_drm.c
drivers/gpu/drm/radeon/radeon_cs.c
Diffstat (limited to 'mm/vmpressure.c')
| -rw-r--r-- | mm/vmpressure.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/mm/vmpressure.c b/mm/vmpressure.c index d4042e75f7c7..c5afd573d7da 100644 --- a/mm/vmpressure.c +++ b/mm/vmpressure.c @@ -165,6 +165,7 @@ static void vmpressure_work_fn(struct work_struct *work) unsigned long scanned; unsigned long reclaimed; + spin_lock(&vmpr->sr_lock); /* * Several contexts might be calling vmpressure(), so it is * possible that the work was rescheduled again before the old @@ -173,11 +174,12 @@ static void vmpressure_work_fn(struct work_struct *work) * here. No need for any locks here since we don't care if * vmpr->reclaimed is in sync. */ - if (!vmpr->scanned) + scanned = vmpr->scanned; + if (!scanned) { + spin_unlock(&vmpr->sr_lock); return; + } - spin_lock(&vmpr->sr_lock); - scanned = vmpr->scanned; reclaimed = vmpr->reclaimed; vmpr->scanned = 0; vmpr->reclaimed = 0; |