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| author | Chuck Lever <chuck.lever@oracle.com> | 2019-08-19 18:46:24 -0400 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2019-08-20 16:35:30 -0400 |
| commit | 805a1f620ba38c5f6de8b9697f35dcb38d8112b5 (patch) | |
| tree | 345ec55b91ca1947bb7cdb2c2e8739f4e7943946 /net/sunrpc/xprtrdma/frwr_ops.c | |
| parent | 3b39f52a02d4b3322744a0a32d59142e01afa435 (diff) | |
| download | lwn-805a1f620ba38c5f6de8b9697f35dcb38d8112b5.tar.gz lwn-805a1f620ba38c5f6de8b9697f35dcb38d8112b5.zip | |
xprtrdma: Ensure creating an MR does not trigger FS writeback
Probably would be good to also pass GFP flags to ib_alloc_mr.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'net/sunrpc/xprtrdma/frwr_ops.c')
| -rw-r--r-- | net/sunrpc/xprtrdma/frwr_ops.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/net/sunrpc/xprtrdma/frwr_ops.c b/net/sunrpc/xprtrdma/frwr_ops.c index 362056f4f48d..1f2e3dda7401 100644 --- a/net/sunrpc/xprtrdma/frwr_ops.c +++ b/net/sunrpc/xprtrdma/frwr_ops.c @@ -147,11 +147,14 @@ int frwr_init_mr(struct rpcrdma_ia *ia, struct rpcrdma_mr *mr) struct ib_mr *frmr; int rc; + /* NB: ib_alloc_mr and device drivers typically allocate + * memory with GFP_KERNEL. + */ frmr = ib_alloc_mr(ia->ri_pd, ia->ri_mrtype, depth); if (IS_ERR(frmr)) goto out_mr_err; - sg = kcalloc(depth, sizeof(*sg), GFP_KERNEL); + sg = kcalloc(depth, sizeof(*sg), GFP_NOFS); if (!sg) goto out_list_err; @@ -171,8 +174,6 @@ out_mr_err: return rc; out_list_err: - dprintk("RPC: %s: sg allocation failure\n", - __func__); ib_dereg_mr(frmr); return -ENOMEM; } |