diff options
Diffstat (limited to 'net/sunrpc/xprtrdma/verbs.c')
| -rw-r--r-- | net/sunrpc/xprtrdma/verbs.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c index 77e0f21c9017..734dfe5d18bd 100644 --- a/net/sunrpc/xprtrdma/verbs.c +++ b/net/sunrpc/xprtrdma/verbs.c @@ -1400,6 +1400,31 @@ rpcrdma_alloc_regbuf(size_t size, enum dma_data_direction direction, } /** + * rpcrdma_regbuf_realloc - re-allocate a SEND/RECV buffer + * @rb: regbuf to reallocate + * @size: size of buffer to be allocated, in bytes + * @flags: GFP flags + * + * Returns true if reallocation was successful. If false is + * returned, @rb is left untouched. + */ +bool rpcrdma_regbuf_realloc(struct rpcrdma_regbuf *rb, size_t size, gfp_t flags) +{ + void *buf; + + buf = kmalloc(size, flags); + if (!buf) + return false; + + rpcrdma_dma_unmap_regbuf(rb); + kfree(rb->rg_data); + + rb->rg_data = buf; + rb->rg_iov.length = size; + return true; +} + +/** * __rpcrdma_map_regbuf - DMA-map a regbuf * @ia: controlling rpcrdma_ia * @rb: regbuf to be mapped |