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authorJeff Layton <jlayton@kernel.org>2019-04-02 09:24:36 -0400
committerIlya Dryomov <idryomov@gmail.com>2019-05-07 19:22:37 +0200
commit86bda539fa90184ca404afb38cd015416bf81d15 (patch)
treedca133d40dbb83dd021cee98ca56ee2c24ea2166 /fs/ceph
parent111c708104506d53bb1845c782cfd98157471e32 (diff)
downloadlinux-86bda539fa90184ca404afb38cd015416bf81d15.tar.bz2
ceph: have ceph_mdsc_do_request call ceph_mdsc_submit_request
Nothing calls ceph_mdsc_submit_request today, but in later patches we'll need to be able to call this separately. Have the helper return an int so we can check the r_err under the mutex, and have the caller just check the error code from the submit. Also move the acquisition of CEPH_CAP_PIN references into the same function. Signed-off-by: Jeff Layton <jlayton@kernel.org> Reviewed-by: "Yan, Zheng" <zyan@redhat.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'fs/ceph')
-rw-r--r--fs/ceph/mds_client.c40
-rw-r--r--fs/ceph/mds_client.h5
2 files changed, 22 insertions, 23 deletions
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
index b451ec761290..ffbb98fdc478 100644
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -2626,14 +2626,27 @@ static void kick_requests(struct ceph_mds_client *mdsc, int mds)
}
}
-void ceph_mdsc_submit_request(struct ceph_mds_client *mdsc,
+int ceph_mdsc_submit_request(struct ceph_mds_client *mdsc, struct inode *dir,
struct ceph_mds_request *req)
{
- dout("submit_request on %p\n", req);
+ int err;
+
+ /* take CAP_PIN refs for r_inode, r_parent, r_old_dentry */
+ if (req->r_inode)
+ ceph_get_cap_refs(ceph_inode(req->r_inode), CEPH_CAP_PIN);
+ if (req->r_parent)
+ ceph_get_cap_refs(ceph_inode(req->r_parent), CEPH_CAP_PIN);
+ if (req->r_old_dentry_dir)
+ ceph_get_cap_refs(ceph_inode(req->r_old_dentry_dir),
+ CEPH_CAP_PIN);
+
+ dout("submit_request on %p for inode %p\n", req, dir);
mutex_lock(&mdsc->mutex);
- __register_request(mdsc, req, NULL);
+ __register_request(mdsc, req, dir);
__do_request(mdsc, req);
+ err = req->r_err;
mutex_unlock(&mdsc->mutex);
+ return err;
}
/*
@@ -2648,27 +2661,12 @@ int ceph_mdsc_do_request(struct ceph_mds_client *mdsc,
dout("do_request on %p\n", req);
- /* take CAP_PIN refs for r_inode, r_parent, r_old_dentry */
- if (req->r_inode)
- ceph_get_cap_refs(ceph_inode(req->r_inode), CEPH_CAP_PIN);
- if (req->r_parent)
- ceph_get_cap_refs(ceph_inode(req->r_parent), CEPH_CAP_PIN);
- if (req->r_old_dentry_dir)
- ceph_get_cap_refs(ceph_inode(req->r_old_dentry_dir),
- CEPH_CAP_PIN);
-
/* issue */
- mutex_lock(&mdsc->mutex);
- __register_request(mdsc, req, dir);
- __do_request(mdsc, req);
-
- if (req->r_err) {
- err = req->r_err;
+ err = ceph_mdsc_submit_request(mdsc, dir, req);
+ if (err)
goto out;
- }
/* wait */
- mutex_unlock(&mdsc->mutex);
dout("do_request waiting\n");
if (!req->r_timeout && req->r_wait_for_completion) {
err = req->r_wait_for_completion(mdsc, req);
@@ -2709,8 +2707,8 @@ int ceph_mdsc_do_request(struct ceph_mds_client *mdsc,
err = req->r_err;
}
-out:
mutex_unlock(&mdsc->mutex);
+out:
dout("do_request %p done, result %d\n", req, err);
return err;
}
diff --git a/fs/ceph/mds_client.h b/fs/ceph/mds_client.h
index ebcad5afc87b..a83f28bc2387 100644
--- a/fs/ceph/mds_client.h
+++ b/fs/ceph/mds_client.h
@@ -465,8 +465,9 @@ extern int ceph_alloc_readdir_reply_buffer(struct ceph_mds_request *req,
struct inode *dir);
extern struct ceph_mds_request *
ceph_mdsc_create_request(struct ceph_mds_client *mdsc, int op, int mode);
-extern void ceph_mdsc_submit_request(struct ceph_mds_client *mdsc,
- struct ceph_mds_request *req);
+extern int ceph_mdsc_submit_request(struct ceph_mds_client *mdsc,
+ struct inode *dir,
+ struct ceph_mds_request *req);
extern int ceph_mdsc_do_request(struct ceph_mds_client *mdsc,
struct inode *dir,
struct ceph_mds_request *req);