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| author | Bryan O'Sullivan <bos@pathscale.com> | 2006-07-01 04:36:01 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-07-01 09:56:00 -0700 |
| commit | 0ed9a4a0b6df0548f9ccadb62add2c0155d5262c (patch) | |
| tree | 8652f891b78b8c7048ff6d75d272fdab6a2ddaee /drivers/infiniband | |
| parent | a40f55fc333cc20d85af92887334f41f7844e0c2 (diff) | |
| download | linux-stable-0ed9a4a0b6df0548f9ccadb62add2c0155d5262c.tar.gz linux-stable-0ed9a4a0b6df0548f9ccadb62add2c0155d5262c.tar.bz2 linux-stable-0ed9a4a0b6df0548f9ccadb62add2c0155d5262c.zip | |
[PATCH] IB/ipath: use more appropriate gfp flags
This helps us to survive better when memory is fragmented.
Signed-off-by: Dave Olson <dave.olson@qlogic.com>
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com>
Cc: "Michael S. Tsirkin" <mst@mellanox.co.il>
Cc: Roland Dreier <rolandd@cisco.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_file_ops.c | 26 |
1 files changed, 14 insertions, 12 deletions
diff --git a/drivers/infiniband/hw/ipath/ipath_file_ops.c b/drivers/infiniband/hw/ipath/ipath_file_ops.c index cd2d5cd05e88..03689dbe1a9e 100644 --- a/drivers/infiniband/hw/ipath/ipath_file_ops.c +++ b/drivers/infiniband/hw/ipath/ipath_file_ops.c @@ -705,6 +705,15 @@ static int ipath_create_user_egr(struct ipath_portdata *pd) unsigned e, egrcnt, alloced, egrperchunk, chunk, egrsize, egroff; size_t size; int ret; + gfp_t gfp_flags; + + /* + * GFP_USER, but without GFP_FS, so buffer cache can be + * coalesced (we hope); otherwise, even at order 4, + * heavy filesystem activity makes these fail, and we can + * use compound pages. + */ + gfp_flags = __GFP_WAIT | __GFP_IO | __GFP_COMP; egrcnt = dd->ipath_rcvegrcnt; /* TID number offset for this port */ @@ -721,10 +730,8 @@ static int ipath_create_user_egr(struct ipath_portdata *pd) * memory pressure (creating large files and then copying them over * NFS while doing lots of MPI jobs), we hit some allocation * failures, even though we can sleep... (2.6.10) Still get - * failures at 64K. 32K is the lowest we can go without waiting - * more memory again. It seems likely that the coalescing in - * free_pages, etc. still has issues (as it has had previously - * during 2.6.x development). + * failures at 64K. 32K is the lowest we can go without wasting + * additional memory. */ size = 0x8000; alloced = ALIGN(egrsize * egrcnt, size); @@ -745,12 +752,6 @@ static int ipath_create_user_egr(struct ipath_portdata *pd) goto bail_rcvegrbuf; } for (e = 0; e < pd->port_rcvegrbuf_chunks; e++) { - /* - * GFP_USER, but without GFP_FS, so buffer cache can be - * coalesced (we hope); otherwise, even at order 4, - * heavy filesystem activity makes these fail - */ - gfp_t gfp_flags = __GFP_WAIT | __GFP_IO | __GFP_COMP; pd->port_rcvegrbuf[e] = dma_alloc_coherent( &dd->pcidev->dev, size, &pd->port_rcvegrbuf_phys[e], @@ -1167,9 +1168,10 @@ static int ipath_mmap(struct file *fp, struct vm_area_struct *vma) ureg = dd->ipath_uregbase + dd->ipath_palign * pd->port_port; - ipath_cdbg(MM, "ushare: pgaddr %llx vm_start=%lx, vmlen %lx\n", + ipath_cdbg(MM, "pgaddr %llx vm_start=%lx len %lx port %u:%u\n", (unsigned long long) pgaddr, vma->vm_start, - vma->vm_end - vma->vm_start); + vma->vm_end - vma->vm_start, dd->ipath_unit, + pd->port_port); if (pgaddr == ureg) ret = mmap_ureg(vma, dd, ureg); |