fs/ceph/caps.c

209 	int have;
222 		have = need;
224 		have = mdsc->caps_avail_count;
225 	mdsc->caps_avail_count -= have;
226 	mdsc->caps_reserve_count += have;
232 	for (i = have; i < need; ) {
267 				have += more_have;
278 			       have + alloc);
284 		BUG_ON(have + alloc != need);
299 		__ceph_unreserve_caps(mdsc, have + alloc);
599 	 * know what happened to this directory while we didn't have the cap.
816 	int have = ci->i_snap_caps;
828 		have |= cap->issued;
839 		have &= ~cap->implemented | cap->issued;
841 	return have;
849 	int have = ci->i_snap_caps;
859 		have |= cap->issued;
861 	return have;
897 	int have = ci->i_snap_caps;
899 	if ((have & mask) == mask) {
901 		      inode, ceph_vinop(inode), ceph_cap_string(have),
921 		have |= cap->issued;
922 		if ((have & mask) == mask) {
1083  * Return caps we have registered with the MDS(s) as 'wanted'.
1130 	/* 'ci' being NULL means the remove have already occurred */
1203 	/* 'ci' being NULL means the remove have already occurred */
1388  * that have now been implemented.
2041 	/* Caps which have active references against them */
2045 	 * "issued" represents the current caps that the MDS wants us to have.
2046 	 * "implemented" is the set that we have been granted, and includes the
2047 	 * ones that have not yet been returned to the MDS (the "revoking" set,
2048 	 * usually because they have outstanding references).
2079 			 * keep RD only if we didn't have the file open RW,
2102 	 * have cached pages, but don't want them, then try to invalidate.
2108 	    inode->i_data.nrpages &&		/* have cached pages */
2135 		 * If we have an auth cap, we don't need to consider any
2820 	int have, implemented;
2849 	have = __ceph_caps_issued(ci, &implemented);
2851 	if (have & need & CEPH_CAP_FILE_WR) {
2870 	if ((have & need) == need) {
2872 		 * Look at (implemented & ~have & not) so that we keep waiting
2880 		int not = want & ~(have & need);
2881 		int revoking = implemented & ~have;
2883 		doutc(cl, "%p %llx.%llx have %s but not %s (revoking %s)\n",
2884 		      inode, ceph_vinop(inode), ceph_cap_string(have),
2907 			if ((have & want) == want)
2947 		doutc(cl, "%p %llx.%llx have %s need %s\n", inode,
2948 		      ceph_vinop(inode), ceph_cap_string(have),
3442 	 * unhashed dentry. But directory inode should have
3527 	 * If CACHE is being revoked, and we have no dirty buffers,
3639 		/* file layout may have changed */
4120 		/* already have caps from the target */
4458 		doutc(cl, " i don't have ino %llx\n", vino.ino);
4473 	/* these will work even if we don't have a cap yet */
4576 	 * along for the mds (who clearly thinks we still have this
4926  * @unless: unless we have these caps
4945 	 * force an record for the directory caps if we have a dentry lease.
4947 	 * doesn't have to be perfect; the mds will revoke anything we don't