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ceph: add refcounting for Fx caps

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In future patches we'll be taking and relying on Fx caps. Add proper
refcounting for them.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Jeff Layton
2019-04-02 08:04:30 -04:00
committed by Ilya Dryomov
parent 3db0a2fc56
commit f85122afeb
3 changed files with 9 additions and 1 deletions
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7
fs/ceph/caps.c
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@@ -965,6 +965,8 @@ int __ceph_caps_used(struct ceph_inode_info *ci)
used |= CEPH_CAP_FILE_WR;
if (ci->i_wb_ref || ci->i_wrbuffer_ref)
used |= CEPH_CAP_FILE_BUFFER;
if (ci->i_fx_ref)
used |= CEPH_CAP_FILE_EXCL;
return used;
}
@@ -2500,6 +2502,8 @@ static void __take_cap_refs(struct ceph_inode_info *ci, int got,
ci->i_rd_ref++;
if (got & CEPH_CAP_FILE_CACHE)
ci->i_rdcache_ref++;
if (got & CEPH_CAP_FILE_EXCL)
ci->i_fx_ref++;
if (got & CEPH_CAP_FILE_WR) {
if (ci->i_wr_ref == 0 && !ci->i_head_snapc) {
BUG_ON(!snap_rwsem_locked);
@@ -2911,6 +2915,9 @@ void ceph_put_cap_refs(struct ceph_inode_info *ci, int had)
if (had & CEPH_CAP_FILE_CACHE)
if (--ci->i_rdcache_ref == 0)
last++;
if (had & CEPH_CAP_FILE_EXCL)
if (--ci->i_fx_ref == 0)
last++;
if (had & CEPH_CAP_FILE_BUFFER) {
if (--ci->i_wb_ref == 0) {
last++;