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authorPeng Tao <tao.peng@primarydata.com>2014-11-10 08:35:35 +0800
committerTom Haynes <loghyr@primarydata.com>2015-02-03 11:06:48 -0800
commit48d635f14a544c2b3ca870d2c7349b41160496d2 (patch)
tree3482ecc1445a13fb60941213930078da302869ff /fs/nfs/internal.h
parent47af81f29556a45493e5c87289c3c16ce911096c (diff)
downloadlinux-48d635f14a544c2b3ca870d2c7349b41160496d2.tar.bz2
nfs: add nfs_pgio_current_mirror helper
Let it return current nfs_pgio_mirror in use depending on pg_mirror_count. For read, we always use pg_mirrors[0], so this effectively gives us freedom to use pg_mirror_idx to track the actual mirror to read from through out the IO stack. Signed-off-by: Peng Tao <tao.peng@primarydata.com> Signed-off-by: Tom Haynes <loghyr@primarydata.com>
Diffstat (limited to 'fs/nfs/internal.h')
-rw-r--r--fs/nfs/internal.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 5be06bcafa2f..ffe4b7ac9e6b 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -255,6 +255,8 @@ int nfs_initiate_pgio(struct rpc_clnt *clnt, struct nfs_pgio_header *hdr,
struct rpc_cred *cred, const struct nfs_rpc_ops *rpc_ops,
const struct rpc_call_ops *call_ops, int how, int flags);
void nfs_free_request(struct nfs_page *req);
+struct nfs_pgio_mirror *
+nfs_pgio_current_mirror(struct nfs_pageio_descriptor *desc);
static inline void nfs_iocounter_init(struct nfs_io_counter *c)
{