[PATCH 5.15 100/167] ceph: switch netfs read ops to use rreq->inode instead of rreq->mapping->host

Greg Kroah-Hartman
2022-07-19T12:38:54Z

From: Jeff Layton <jlayton@kernel.org>

[ Upstream commit a25cedb4313d35e1f2968105678a47ca28e84d3b ]

One fewer pointer dereference, and in the future we may not be able to
count on the mapping pointer being populated (e.g. in the DIO case).

Signed-off-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/ceph/addr.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index 99b80b5c7a93..b218a26291b8 100644
--- a/fs/ceph/addr.c
+++ b/fs/ceph/addr.c
@@ -179,7 +179,7 @@ static int ceph_releasepage(struct page *page, gfp_t gfp)

static void ceph_netfs_expand_readahead(struct netfs_read_request *rreq)
{
- struct inode *inode = rreq->mapping->host;
+ struct inode *inode = rreq->inode;
struct ceph_inode_info *ci = ceph_inode(inode);
struct ceph_file_layout *lo = &ci->i_layout;
u32 blockoff;
@@ -196,7 +196,7 @@ static void ceph_netfs_expand_readahead(struct netfs_read_request *rreq)

static bool ceph_netfs_clamp_length(struct netfs_read_subrequest *subreq)
{
- struct inode *inode = subreq->rreq->mapping->host;
+ struct inode *inode = subreq->rreq->inode;
struct ceph_fs_client *fsc = ceph_inode_to_client(inode);
struct ceph_inode_info *ci = ceph_inode(inode);
u64 objno, objoff;
@@ -242,7 +242,7 @@ static void finish_netfs_read(struct ceph_osd_request *req)
static void ceph_netfs_issue_op(struct netfs_read_subrequest *subreq)
{
struct netfs_read_request *rreq = subreq->rreq;
- struct inode *inode = rreq->mapping->host;
+ struct inode *inode = rreq->inode;
struct ceph_inode_info *ci = ceph_inode(inode);
struct ceph_fs_client *fsc = ceph_inode_to_client(inode);
struct ceph_osd_request *req;
--
2.35.1