diff options
| author | Tejun Heo <tj@kernel.org> | 2011-05-24 09:59:36 +0200 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2011-05-24 09:59:36 +0200 |
| commit | 6988f20fe04e9ef3aea488cb8ab57fbeb78e12f0 (patch) | |
| tree | c9d7fc50a2e2147a5ca07e3096e7eeb916ad2da9 /drivers/scsi/libiscsi_tcp.c | |
| parent | 0415b00d175e0d8945e6785aad21b5f157976ce0 (diff) | |
| parent | 6ea0c34dac89611126455537552cffe6c7e832ad (diff) | |
| download | blackbird-obmc-linux-6988f20fe04e9ef3aea488cb8ab57fbeb78e12f0.tar.gz blackbird-obmc-linux-6988f20fe04e9ef3aea488cb8ab57fbeb78e12f0.zip | |
Merge branch 'fixes-2.6.39' into for-2.6.40
Diffstat (limited to 'drivers/scsi/libiscsi_tcp.c')
| -rw-r--r-- | drivers/scsi/libiscsi_tcp.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/scsi/libiscsi_tcp.c b/drivers/scsi/libiscsi_tcp.c index 8eeb39ffa37f..e98ae33f1295 100644 --- a/drivers/scsi/libiscsi_tcp.c +++ b/drivers/scsi/libiscsi_tcp.c @@ -132,14 +132,25 @@ static void iscsi_tcp_segment_map(struct iscsi_segment *segment, int recv) if (page_count(sg_page(sg)) >= 1 && !recv) return; - segment->sg_mapped = kmap_atomic(sg_page(sg), KM_SOFTIRQ0); + if (recv) { + segment->atomic_mapped = true; + segment->sg_mapped = kmap_atomic(sg_page(sg), KM_SOFTIRQ0); + } else { + segment->atomic_mapped = false; + /* the xmit path can sleep with the page mapped so use kmap */ + segment->sg_mapped = kmap(sg_page(sg)); + } + segment->data = segment->sg_mapped + sg->offset + segment->sg_offset; } void iscsi_tcp_segment_unmap(struct iscsi_segment *segment) { if (segment->sg_mapped) { - kunmap_atomic(segment->sg_mapped, KM_SOFTIRQ0); + if (segment->atomic_mapped) + kunmap_atomic(segment->sg_mapped, KM_SOFTIRQ0); + else + kunmap(sg_page(segment->sg)); segment->sg_mapped = NULL; segment->data = NULL; } |
