qjyu
/
OrangePi_CM5
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

svcrdma: fix bounce buffers for unaligned offsets and multiple pages 

This was discovered using O_DIRECT at the client side, with small
unaligned file offsets or IOs that span multiple file pages.

Fixes: e248aa7be8 ("svcrdma: Remove max_sge check at connect time")
Signed-off-by: Dan Aloni <dan@kernelim.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
Dan Aloni 2020-10-02 22:33:43 +03:00 committed by J. Bruce Fields
parent c1488428a8
commit c327a310ec
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
net/sunrpc/xprtrdma/svc_rdma_sendto.c
View File

@ -638,10 +638,11 @@ static int svc_rdma_pull_up_reply_msg(struct svcxprt_rdma *rdma,
while (remaining) { while (remaining) {
len = min_t(u32, PAGE_SIZE - pageoff, remaining); len = min_t(u32, PAGE_SIZE - pageoff, remaining);
memcpy(dst, page_address(*ppages), len); memcpy(dst, page_address(*ppages) + pageoff, len);
remaining -= len; remaining -= len;
dst += len; dst += len;
pageoff = 0; pageoff = 0;
ppages++;
} }
} }