libceph: a major OSD client update

This is a major sync up, up to ~Jewel.  The highlights are:

- per-session request trees (vs a global per-client tree)
- per-session locking (vs a global per-client rwlock)
- homeless OSD session
- no ad-hoc global per-client lists
- support for pool quotas
- foundation for watch/notify v2 support
- foundation for map check (pool deletion detection) support

The switchover is incomplete: lingering requests can be setup and
teared down but aren't ever reestablished.  This functionality is
restored with the introduction of the new lingering infrastructure
(ceph_osd_linger_request, linger_work, etc) in a later commit.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/fs/ceph/ioctl.c b/fs/ceph/ioctl.c
index 1831ad6cf066..be6b1657b1af 100644
--- a/fs/ceph/ioctl.c
+++ b/fs/ceph/ioctl.c
@@ -193,12 +193,12 @@ static long ceph_ioctl_get_dataloc(struct file *file, void __user *arg)
 	if (copy_from_user(&dl, arg, sizeof(dl)))
 		return -EFAULT;
 
-	down_read(&osdc->map_sem);
+	down_read(&osdc->lock);
 	r = ceph_calc_file_object_mapping(&ci->i_layout, dl.file_offset, len,
 					  &dl.object_no, &dl.object_offset,
 					  &olen);
 	if (r < 0) {
-		up_read(&osdc->map_sem);
+		up_read(&osdc->lock);
 		return -EIO;
 	}
 	dl.file_offset -= dl.object_offset;
@@ -217,7 +217,7 @@ static long ceph_ioctl_get_dataloc(struct file *file, void __user *arg)
 
 	r = ceph_object_locator_to_pg(osdc->osdmap, &oid, &oloc, &pgid);
 	if (r < 0) {
-		up_read(&osdc->map_sem);
+		up_read(&osdc->lock);
 		return r;
 	}
 
@@ -230,7 +230,7 @@ static long ceph_ioctl_get_dataloc(struct file *file, void __user *arg)
 	} else {
 		memset(&dl.osd_addr, 0, sizeof(dl.osd_addr));
 	}
-	up_read(&osdc->map_sem);
+	up_read(&osdc->lock);
 
 	/* send result back to user */
 	if (copy_to_user(arg, &dl, sizeof(dl)))