fs/ceph/caps.c

208 	int have;
221 		have = need;
223 		have = mdsc->caps_avail_count;
224 	mdsc->caps_avail_count -= have;
225 	mdsc->caps_reserve_count += have;
231 	for (i = have; i < need; ) {
266 				have += more_have;
277 			       have + alloc);
283 		BUG_ON(have + alloc != need);
298 		__ceph_unreserve_caps(mdsc, have + alloc);
598 	 * know what happened to this directory while we didn't have the cap.
815 	int have = ci->i_snap_caps;
827 		have |= cap->issued;
838 		have &= ~cap->implemented | cap->issued;
840 	return have;
848 	int have = ci->i_snap_caps;
858 		have |= cap->issued;
860 	return have;
896 	int have = ci->i_snap_caps;
898 	if ((have & mask) == mask) {
900 		      inode, ceph_vinop(inode), ceph_cap_string(have),
920 		have |= cap->issued;
921 		if ((have & mask) == mask) {
1096  * Return caps we have registered with the MDS(s) as 'wanted'.
1143 	/* 'ci' being NULL means the remove have already occurred */
1216 	/* 'ci' being NULL means the remove have already occurred */
1401  * that have now been implemented.
2052 	/* Caps which have active references against them */
2056 	 * "issued" represents the current caps that the MDS wants us to have.
2057 	 * "implemented" is the set that we have been granted, and includes the
2058 	 * ones that have not yet been returned to the MDS (the "revoking" set,
2059 	 * usually because they have outstanding references).
2090 			 * keep RD only if we didn't have the file open RW,
2112 	 * have cached pages, but don't want them, then try to invalidate.
2118 	    inode->i_data.nrpages &&		/* have cached pages */
2145 		 * If we have an auth cap, we don't need to consider any
2825 	int have, implemented;
2854 	have = __ceph_caps_issued(ci, &implemented);
2856 	if (have & need & CEPH_CAP_FILE_WR) {
2875 	if ((have & need) == need) {
2877 		 * Look at (implemented & ~have & not) so that we keep waiting
2885 		int not = want & ~(have & need);
2886 		int revoking = implemented & ~have;
2888 		doutc(cl, "%p %llx.%llx have %s but not %s (revoking %s)\n",
2889 		      inode, ceph_vinop(inode), ceph_cap_string(have),
2912 			if ((have & want) == want)
2952 		doutc(cl, "%p %llx.%llx have %s need %s\n", inode,
2953 		      ceph_vinop(inode), ceph_cap_string(have),
3441 	 * unhashed dentry. But directory inode should have
3524 	 * If CACHE is being revoked, and we have no dirty buffers,
3636 		/* file layout may have changed */
4115 		/* already have caps from the target */
4453 		doutc(cl, " i don't have ino %llx\n", vino.ino);
4468 	/* these will work even if we don't have a cap yet */
4571 	 * along for the mds (who clearly thinks we still have this
4899  * @unless: unless we have these caps
4918 	 * force an record for the directory caps if we have a dentry lease.
4920 	 * doesn't have to be perfect; the mds will revoke anything we don't