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Commit 395c312b authored by Yan, Zheng's avatar Yan, Zheng Committed by Alex Elder
Browse files

ceph: allow revoking duplicated caps issued by non-auth MDS 



Allow revoking duplicated caps issued by non-auth MDS if these caps
are also issued by auth MDS.

Signed-off-by: default avatarYan, Zheng <zheng.z.yan@intel.com>
Reviewed-by: default avatarSage Weil <sage@inktank.com>
parent 8a92a119

fs/ceph/caps.c

+10 −5
Original line number Diff line number Diff line
@@ -1468,7 +1468,7 @@ void ceph_check_caps(struct ceph_inode_info *ci, int flags, 
	struct ceph_mds_client *mdsc = fsc->mdsc;

	struct inode *inode = &ci->vfs_inode;

	struct ceph_cap *cap;

	int file_wanted, used;

	int file_wanted, used, cap_used;

	int took_snap_rwsem = 0;             /* true if mdsc->snap_rwsem held */

	int issued, implemented, want, retain, revoking, flushing = 0;

	int mds = -1;   /* keep track of how far we've gone through i_caps list
@@ -1571,9 +1571,14 @@ void ceph_check_caps(struct ceph_inode_info *ci, int flags, 


		/* NOTE: no side-effects allowed, until we take s_mutex */



		cap_used = used;

		if (ci->i_auth_cap && cap != ci->i_auth_cap)

			cap_used &= ~ci->i_auth_cap->issued;



		revoking = cap->implemented & ~cap->issued;

		dout(" mds%d cap %p issued %s implemented %s revoking %s\n",

		dout(" mds%d cap %p used %s issued %s implemented %s revoking %s\n",

		     cap->mds, cap, ceph_cap_string(cap->issued),

		     ceph_cap_string(cap_used),

		     ceph_cap_string(cap->implemented),

		     ceph_cap_string(revoking));
@@ -1601,7 +1606,7 @@ void ceph_check_caps(struct ceph_inode_info *ci, int flags, 
		}



		/* completed revocation? going down and there are no caps? */

		if (revoking && (revoking & used) == 0) {

		if (revoking && (revoking & cap_used) == 0) {

			dout("completed revocation of %s\n",

			     ceph_cap_string(cap->implemented & ~cap->issued));

			goto ack;
@@ -1678,8 +1683,8 @@ void ceph_check_caps(struct ceph_inode_info *ci, int flags, 
		sent++;



		/* __send_cap drops i_ceph_lock */

		delayed += __send_cap(mdsc, cap, CEPH_CAP_OP_UPDATE, used, want,

				      retain, flushing, NULL);

		delayed += __send_cap(mdsc, cap, CEPH_CAP_OP_UPDATE, cap_used,

				      want, retain, flushing, NULL);

		goto retry; /* retake i_ceph_lock and restart our cap scan. */

	}