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| author | Chuck Lever <chuck.lever@oracle.com> | 2018-12-19 10:59:17 -0500 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2019-01-02 12:05:17 -0500 |
| commit | 15303d9ecd2f29168aea0b080bd1ec27c298da3f (patch) | |
| tree | c18f684ab17b9d3dcb5bb58861ff8149181ca831 /net | |
| parent | 0dfbb5f05e7888903e7e1da6c2c4aa017ee1a207 (diff) | |
| download | lwn-15303d9ecd2f29168aea0b080bd1ec27c298da3f.tar.gz lwn-15303d9ecd2f29168aea0b080bd1ec27c298da3f.zip | |
xprtrdma: Recognize XDRBUF_SPARSE_PAGES
Commit 431f6eb3570f ("SUNRPC: Add a label for RPC calls that require
allocation on receive") didn't update similar logic in rpc_rdma.c.
I don't think this is a bug, per-se; the commit just adds more
careful checking for broken upper layer behavior.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/sunrpc/xprtrdma/rpc_rdma.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/net/sunrpc/xprtrdma/rpc_rdma.c b/net/sunrpc/xprtrdma/rpc_rdma.c index 3804fb30bdcf..939f84adbbda 100644 --- a/net/sunrpc/xprtrdma/rpc_rdma.c +++ b/net/sunrpc/xprtrdma/rpc_rdma.c @@ -218,11 +218,12 @@ rpcrdma_convert_iovs(struct rpcrdma_xprt *r_xprt, struct xdr_buf *xdrbuf, ppages = xdrbuf->pages + (xdrbuf->page_base >> PAGE_SHIFT); page_base = offset_in_page(xdrbuf->page_base); while (len) { - if (unlikely(!*ppages)) { - /* XXX: Certain upper layer operations do - * not provide receive buffer pages. - */ - *ppages = alloc_page(GFP_ATOMIC); + /* ACL likes to be lazy in allocating pages - ACLs + * are small by default but can get huge. + */ + if (unlikely(xdrbuf->flags & XDRBUF_SPARSE_PAGES)) { + if (!*ppages) + *ppages = alloc_page(GFP_ATOMIC); if (!*ppages) return -ENOBUFS; } |