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[GFS2] Make glock operations const
For all the usual reasons of enforcing correctness and potentially reducing code size, this patch makes the glock operations const. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
This commit is contained in:
Steven Whitehouse
parent
83b7a664a0
commit
8fb4b536e7
@ -253,7 +253,7 @@ static struct gfs2_glock *gfs2_glock_find(struct gfs2_sbd *sdp,
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*/
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int gfs2_glock_get(struct gfs2_sbd *sdp, uint64_t number,
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struct gfs2_glock_operations *glops, int create,
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const struct gfs2_glock_operations *glops, int create,
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struct gfs2_glock **glp)
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{
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struct lm_lockname name;
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@ -480,7 +480,7 @@ static int rq_promote(struct gfs2_holder *gh)
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{
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struct gfs2_glock *gl = gh->gh_gl;
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struct gfs2_sbd *sdp = gl->gl_sbd;
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struct gfs2_glock_operations *glops = gl->gl_ops;
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const struct gfs2_glock_operations *glops = gl->gl_ops;
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if (!relaxed_state_ok(gl->gl_state, gh->gh_state, gh->gh_flags)) {
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if (list_empty(&gl->gl_holders)) {
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@ -535,7 +535,7 @@ static int rq_promote(struct gfs2_holder *gh)
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static int rq_demote(struct gfs2_holder *gh)
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{
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struct gfs2_glock *gl = gh->gh_gl;
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struct gfs2_glock_operations *glops = gl->gl_ops;
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const struct gfs2_glock_operations *glops = gl->gl_ops;
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if (!list_empty(&gl->gl_holders))
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return 1;
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@ -805,7 +805,7 @@ static void state_change(struct gfs2_glock *gl, unsigned int new_state)
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static void xmote_bh(struct gfs2_glock *gl, unsigned int ret)
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{
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struct gfs2_sbd *sdp = gl->gl_sbd;
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struct gfs2_glock_operations *glops = gl->gl_ops;
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const struct gfs2_glock_operations *glops = gl->gl_ops;
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struct gfs2_holder *gh = gl->gl_req_gh;
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int prev_state = gl->gl_state;
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int op_done = 1;
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@ -915,7 +915,7 @@ static void xmote_bh(struct gfs2_glock *gl, unsigned int ret)
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void gfs2_glock_xmote_th(struct gfs2_glock *gl, unsigned int state, int flags)
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{
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struct gfs2_sbd *sdp = gl->gl_sbd;
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struct gfs2_glock_operations *glops = gl->gl_ops;
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const struct gfs2_glock_operations *glops = gl->gl_ops;
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int lck_flags = flags & (LM_FLAG_TRY | LM_FLAG_TRY_1CB |
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LM_FLAG_NOEXP | LM_FLAG_ANY |
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LM_FLAG_PRIORITY);
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@ -960,7 +960,7 @@ void gfs2_glock_xmote_th(struct gfs2_glock *gl, unsigned int state, int flags)
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static void drop_bh(struct gfs2_glock *gl, unsigned int ret)
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{
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struct gfs2_sbd *sdp = gl->gl_sbd;
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struct gfs2_glock_operations *glops = gl->gl_ops;
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const struct gfs2_glock_operations *glops = gl->gl_ops;
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struct gfs2_holder *gh = gl->gl_req_gh;
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clear_bit(GLF_PREFETCH, &gl->gl_flags);
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@ -1010,7 +1010,7 @@ static void drop_bh(struct gfs2_glock *gl, unsigned int ret)
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void gfs2_glock_drop_th(struct gfs2_glock *gl)
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{
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struct gfs2_sbd *sdp = gl->gl_sbd;
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struct gfs2_glock_operations *glops = gl->gl_ops;
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const struct gfs2_glock_operations *glops = gl->gl_ops;
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unsigned int ret;
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gfs2_assert_warn(sdp, test_bit(GLF_LOCK, &gl->gl_flags));
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@ -1081,7 +1081,7 @@ static int glock_wait_internal(struct gfs2_holder *gh)
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{
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struct gfs2_glock *gl = gh->gh_gl;
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struct gfs2_sbd *sdp = gl->gl_sbd;
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struct gfs2_glock_operations *glops = gl->gl_ops;
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const struct gfs2_glock_operations *glops = gl->gl_ops;
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if (test_bit(HIF_ABORTED, &gh->gh_iflags))
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return -EIO;
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@ -1294,7 +1294,7 @@ int gfs2_glock_wait(struct gfs2_holder *gh)
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void gfs2_glock_dq(struct gfs2_holder *gh)
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{
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struct gfs2_glock *gl = gh->gh_gl;
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struct gfs2_glock_operations *glops = gl->gl_ops;
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const struct gfs2_glock_operations *glops = gl->gl_ops;
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if (gh->gh_flags & GL_SYNC)
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set_bit(GLF_SYNC, &gl->gl_flags);
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@ -1339,7 +1339,7 @@ void gfs2_glock_dq(struct gfs2_holder *gh)
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static void gfs2_glock_prefetch(struct gfs2_glock *gl, unsigned int state,
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int flags)
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{
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struct gfs2_glock_operations *glops = gl->gl_ops;
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const struct gfs2_glock_operations *glops = gl->gl_ops;
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spin_lock(&gl->gl_spin);
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@ -1365,7 +1365,7 @@ static void greedy_work(void *data)
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struct greedy *gr = data;
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struct gfs2_holder *gh = &gr->gr_gh;
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struct gfs2_glock *gl = gh->gh_gl;
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struct gfs2_glock_operations *glops = gl->gl_ops;
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const struct gfs2_glock_operations *glops = gl->gl_ops;
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clear_bit(GLF_SKIP_WAITERS2, &gl->gl_flags);
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@ -1447,8 +1447,8 @@ void gfs2_glock_dq_uninit(struct gfs2_holder *gh)
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*/
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int gfs2_glock_nq_num(struct gfs2_sbd *sdp, uint64_t number,
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struct gfs2_glock_operations *glops, unsigned int state,
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int flags, struct gfs2_holder *gh)
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const struct gfs2_glock_operations *glops,
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unsigned int state, int flags, struct gfs2_holder *gh)
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{
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struct gfs2_glock *gl;
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int error;
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@ -1645,7 +1645,7 @@ void gfs2_glock_dq_uninit_m(unsigned int num_gh, struct gfs2_holder *ghs)
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*/
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void gfs2_glock_prefetch_num(struct gfs2_sbd *sdp, uint64_t number,
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struct gfs2_glock_operations *glops,
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const struct gfs2_glock_operations *glops,
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unsigned int state, int flags)
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{
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struct gfs2_glock *gl;
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@ -1827,7 +1827,7 @@ void gfs2_iopen_go_callback(struct gfs2_glock *io_gl, unsigned int state)
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static int demote_ok(struct gfs2_glock *gl)
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{
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struct gfs2_sbd *sdp = gl->gl_sbd;
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struct gfs2_glock_operations *glops = gl->gl_ops;
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const struct gfs2_glock_operations *glops = gl->gl_ops;
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int demote = 1;
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if (test_bit(GLF_STICKY, &gl->gl_flags))
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@ -75,7 +75,7 @@ static inline int gfs2_glock_is_blocking(struct gfs2_glock *gl)
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}
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int gfs2_glock_get(struct gfs2_sbd *sdp,
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uint64_t number, struct gfs2_glock_operations *glops,
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uint64_t number, const struct gfs2_glock_operations *glops,
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int create, struct gfs2_glock **glp);
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void gfs2_glock_hold(struct gfs2_glock *gl);
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int gfs2_glock_put(struct gfs2_glock *gl);
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@ -97,7 +97,7 @@ int gfs2_glock_be_greedy(struct gfs2_glock *gl, unsigned int time);
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void gfs2_glock_dq_uninit(struct gfs2_holder *gh);
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int gfs2_glock_nq_num(struct gfs2_sbd *sdp,
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uint64_t number, struct gfs2_glock_operations *glops,
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uint64_t number, const struct gfs2_glock_operations *glops,
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unsigned int state, int flags, struct gfs2_holder *gh);
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int gfs2_glock_nq_m(unsigned int num_gh, struct gfs2_holder *ghs);
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@ -105,7 +105,7 @@ void gfs2_glock_dq_m(unsigned int num_gh, struct gfs2_holder *ghs);
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void gfs2_glock_dq_uninit_m(unsigned int num_gh, struct gfs2_holder *ghs);
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void gfs2_glock_prefetch_num(struct gfs2_sbd *sdp, uint64_t number,
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struct gfs2_glock_operations *glops,
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const struct gfs2_glock_operations *glops,
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unsigned int state, int flags);
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void gfs2_glock_inode_squish(struct inode *inode);
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@ -493,13 +493,13 @@ static int quota_go_demote_ok(struct gfs2_glock *gl)
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return !atomic_read(&gl->gl_lvb_count);
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}
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struct gfs2_glock_operations gfs2_meta_glops = {
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const struct gfs2_glock_operations gfs2_meta_glops = {
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.go_xmote_th = gfs2_glock_xmote_th,
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.go_drop_th = gfs2_glock_drop_th,
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.go_type = LM_TYPE_META
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};
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struct gfs2_glock_operations gfs2_inode_glops = {
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const struct gfs2_glock_operations gfs2_inode_glops = {
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.go_xmote_th = inode_go_xmote_th,
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.go_xmote_bh = inode_go_xmote_bh,
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.go_drop_th = inode_go_drop_th,
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@ -512,7 +512,7 @@ struct gfs2_glock_operations gfs2_inode_glops = {
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.go_type = LM_TYPE_INODE
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};
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struct gfs2_glock_operations gfs2_rgrp_glops = {
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const struct gfs2_glock_operations gfs2_rgrp_glops = {
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.go_xmote_th = gfs2_glock_xmote_th,
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.go_drop_th = gfs2_glock_drop_th,
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.go_sync = meta_go_sync,
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@ -523,40 +523,40 @@ struct gfs2_glock_operations gfs2_rgrp_glops = {
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.go_type = LM_TYPE_RGRP
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};
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struct gfs2_glock_operations gfs2_trans_glops = {
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const struct gfs2_glock_operations gfs2_trans_glops = {
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.go_xmote_th = trans_go_xmote_th,
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.go_xmote_bh = trans_go_xmote_bh,
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.go_drop_th = trans_go_drop_th,
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.go_type = LM_TYPE_NONDISK
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};
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struct gfs2_glock_operations gfs2_iopen_glops = {
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const struct gfs2_glock_operations gfs2_iopen_glops = {
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.go_xmote_th = gfs2_glock_xmote_th,
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.go_drop_th = gfs2_glock_drop_th,
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.go_callback = gfs2_iopen_go_callback,
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.go_type = LM_TYPE_IOPEN
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};
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struct gfs2_glock_operations gfs2_flock_glops = {
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const struct gfs2_glock_operations gfs2_flock_glops = {
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.go_xmote_th = gfs2_glock_xmote_th,
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.go_drop_th = gfs2_glock_drop_th,
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.go_type = LM_TYPE_FLOCK
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};
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struct gfs2_glock_operations gfs2_nondisk_glops = {
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const struct gfs2_glock_operations gfs2_nondisk_glops = {
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.go_xmote_th = gfs2_glock_xmote_th,
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.go_drop_th = gfs2_glock_drop_th,
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.go_type = LM_TYPE_NONDISK
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};
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struct gfs2_glock_operations gfs2_quota_glops = {
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const struct gfs2_glock_operations gfs2_quota_glops = {
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.go_xmote_th = gfs2_glock_xmote_th,
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.go_drop_th = gfs2_glock_drop_th,
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.go_demote_ok = quota_go_demote_ok,
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.go_type = LM_TYPE_QUOTA
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};
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struct gfs2_glock_operations gfs2_journal_glops = {
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const struct gfs2_glock_operations gfs2_journal_glops = {
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.go_xmote_th = gfs2_glock_xmote_th,
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.go_drop_th = gfs2_glock_drop_th,
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.go_type = LM_TYPE_JOURNAL
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@ -10,14 +10,14 @@
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#ifndef __GLOPS_DOT_H__
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#define __GLOPS_DOT_H__
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extern struct gfs2_glock_operations gfs2_meta_glops;
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extern struct gfs2_glock_operations gfs2_inode_glops;
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extern struct gfs2_glock_operations gfs2_rgrp_glops;
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extern struct gfs2_glock_operations gfs2_trans_glops;
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extern struct gfs2_glock_operations gfs2_iopen_glops;
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extern struct gfs2_glock_operations gfs2_flock_glops;
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extern struct gfs2_glock_operations gfs2_nondisk_glops;
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extern struct gfs2_glock_operations gfs2_quota_glops;
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extern struct gfs2_glock_operations gfs2_journal_glops;
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extern const struct gfs2_glock_operations gfs2_meta_glops;
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extern const struct gfs2_glock_operations gfs2_inode_glops;
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extern const struct gfs2_glock_operations gfs2_rgrp_glops;
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extern const struct gfs2_glock_operations gfs2_trans_glops;
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extern const struct gfs2_glock_operations gfs2_iopen_glops;
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extern const struct gfs2_glock_operations gfs2_flock_glops;
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extern const struct gfs2_glock_operations gfs2_nondisk_glops;
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extern const struct gfs2_glock_operations gfs2_quota_glops;
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extern const struct gfs2_glock_operations gfs2_journal_glops;
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#endif /* __GLOPS_DOT_H__ */
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@ -130,7 +130,7 @@ struct gfs2_glock_operations {
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void (*go_unlock) (struct gfs2_holder * gh);
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void (*go_callback) (struct gfs2_glock * gl, unsigned int state);
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void (*go_greedy) (struct gfs2_glock * gl);
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int go_type;
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const int go_type;
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};
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enum {
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@ -189,7 +189,7 @@ struct gfs2_glock {
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struct list_head gl_waiters2; /* HIF_DEMOTE, HIF_GREEDY */
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struct list_head gl_waiters3; /* HIF_PROMOTE */
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struct gfs2_glock_operations *gl_ops;
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const struct gfs2_glock_operations *gl_ops;
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struct gfs2_holder *gl_req_gh;
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gfs2_glop_bh_t gl_req_bh;
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