diff options
| author | Hank Janssen <[email protected]> | 2010-08-05 19:29:44 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <[email protected]> | 2010-09-03 17:37:15 -0700 |
| commit | 0c47a70a9a8a6d1ec37a53d2f9cb82f8b8ef8aa2 (patch) | |
| tree | 651447d7bfd8dfcb56af861f456b9a97e5405fab | |
| parent | b681b5886bb5d1f5b6750a0ed7c62846da7ccea4 (diff) | |
staging: hv: Fixed bounce kmap problem by using correct index
Fixed bounce offset kmap problem by using correct index.
The symptom of the problem is that in some NAS appliances this problem
represents Itself by a unresponsive VM under a load with many clients writing
small files.
Signed-off-by:Hank Janssen <[email protected]>
Signed-off-by:Haiyang Zhang <[email protected]>
Cc: stable <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
| -rw-r--r-- | drivers/staging/hv/storvsc_drv.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/staging/hv/storvsc_drv.c b/drivers/staging/hv/storvsc_drv.c index 075b61bd492f..3b9ccb062008 100644 --- a/drivers/staging/hv/storvsc_drv.c +++ b/drivers/staging/hv/storvsc_drv.c @@ -495,7 +495,7 @@ static unsigned int copy_to_bounce_buffer(struct scatterlist *orig_sgl, /* ASSERT(orig_sgl[i].offset + orig_sgl[i].length <= PAGE_SIZE); */ - if (j == 0) + if (bounce_addr == 0) bounce_addr = (unsigned long)kmap_atomic(sg_page((&bounce_sgl[j])), KM_IRQ0); while (srclen) { @@ -556,7 +556,7 @@ static unsigned int copy_from_bounce_buffer(struct scatterlist *orig_sgl, destlen = orig_sgl[i].length; /* ASSERT(orig_sgl[i].offset + orig_sgl[i].length <= PAGE_SIZE); */ - if (j == 0) + if (bounce_addr == 0) bounce_addr = (unsigned long)kmap_atomic(sg_page((&bounce_sgl[j])), KM_IRQ0); while (destlen) { |