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-rw-r--r--fs/gfs2/glock.c162
-rw-r--r--fs/gfs2/incore.h1
-rw-r--r--fs/gfs2/recovery.c79
3 files changed, 46 insertions, 196 deletions
diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c
index 32cc400..0f31715 100644
--- a/fs/gfs2/glock.c
+++ b/fs/gfs2/glock.c
@@ -450,86 +450,6 @@ void gfs2_holder_put(struct gfs2_holder *gh)
}
/**
- * handle_recurse - put other holder structures (marked recursive)
- * into the holders list
- * @gh: the holder structure
- *
- */
-
-static void handle_recurse(struct gfs2_holder *gh)
-{
- struct gfs2_glock *gl = gh->gh_gl;
- struct gfs2_sbd *sdp = gl->gl_sbd;
- struct gfs2_holder *tmp_gh, *safe;
- int found = 0;
-
- BUG_ON(!spin_is_locked(&gl->gl_spin));
-
- printk(KERN_INFO "recursion %016llx, %u\n", gl->gl_name.ln_number,
- gl->gl_name.ln_type);
-
- if (gfs2_assert_warn(sdp, gh->gh_owner))
- return;
-
- list_for_each_entry_safe(tmp_gh, safe, &gl->gl_waiters3, gh_list) {
- if (tmp_gh->gh_owner != gh->gh_owner)
- continue;
-
- gfs2_assert_warn(sdp,
- test_bit(HIF_RECURSE, &tmp_gh->gh_iflags));
-
- list_move_tail(&tmp_gh->gh_list, &gl->gl_holders);
- tmp_gh->gh_error = 0;
- set_bit(HIF_HOLDER, &tmp_gh->gh_iflags);
-
- complete(&tmp_gh->gh_wait);
-
- found = 1;
- }
-
- gfs2_assert_warn(sdp, found);
-}
-
-/**
- * do_unrecurse - a recursive holder was just dropped of the waiters3 list
- * @gh: the holder
- *
- * If there is only one other recursive holder, clear its HIF_RECURSE bit.
- * If there is more than one, leave them alone.
- *
- */
-
-static void do_unrecurse(struct gfs2_holder *gh)
-{
- struct gfs2_glock *gl = gh->gh_gl;
- struct gfs2_sbd *sdp = gl->gl_sbd;
- struct gfs2_holder *tmp_gh, *last_gh = NULL;
- int found = 0;
-
- BUG_ON(!spin_is_locked(&gl->gl_spin));
-
- if (gfs2_assert_warn(sdp, gh->gh_owner))
- return;
-
- list_for_each_entry(tmp_gh, &gl->gl_waiters3, gh_list) {
- if (tmp_gh->gh_owner != gh->gh_owner)
- continue;
-
- gfs2_assert_warn(sdp,
- test_bit(HIF_RECURSE, &tmp_gh->gh_iflags));
-
- if (found)
- return;
-
- found = 1;
- last_gh = tmp_gh;
- }
-
- if (!gfs2_assert_warn(sdp, found))
- clear_bit(HIF_RECURSE, &last_gh->gh_iflags);
-}
-
-/**
* rq_mutex - process a mutex request in the queue
* @gh: the glock holder
*
@@ -562,7 +482,6 @@ static int rq_promote(struct gfs2_holder *gh)
struct gfs2_glock *gl = gh->gh_gl;
struct gfs2_sbd *sdp = gl->gl_sbd;
struct gfs2_glock_operations *glops = gl->gl_ops;
- int recurse;
if (!relaxed_state_ok(gl->gl_state, gh->gh_state, gh->gh_flags)) {
if (list_empty(&gl->gl_holders)) {
@@ -588,7 +507,6 @@ static int rq_promote(struct gfs2_holder *gh)
if (list_empty(&gl->gl_holders)) {
set_bit(HIF_FIRST, &gh->gh_iflags);
set_bit(GLF_LOCK, &gl->gl_flags);
- recurse = 0;
} else {
struct gfs2_holder *next_gh;
if (gh->gh_flags & GL_LOCAL_EXCL)
@@ -597,16 +515,12 @@ static int rq_promote(struct gfs2_holder *gh)
gh_list);
if (next_gh->gh_flags & GL_LOCAL_EXCL)
return 1;
- recurse = test_bit(HIF_RECURSE, &gh->gh_iflags);
}
list_move_tail(&gh->gh_list, &gl->gl_holders);
gh->gh_error = 0;
set_bit(HIF_HOLDER, &gh->gh_iflags);
- if (recurse)
- handle_recurse(gh);
-
complete(&gh->gh_wait);
return 0;
@@ -897,8 +811,6 @@ static void xmote_bh(struct gfs2_glock *gl, unsigned int ret)
spin_lock(&gl->gl_spin);
list_del_init(&gh->gh_list);
gh->gh_error = -EIO;
- if (test_bit(HIF_RECURSE, &gh->gh_iflags))
- do_unrecurse(gh);
spin_unlock(&gl->gl_spin);
} else if (test_bit(HIF_DEMOTE, &gh->gh_iflags)) {
@@ -922,8 +834,6 @@ static void xmote_bh(struct gfs2_glock *gl, unsigned int ret)
spin_lock(&gl->gl_spin);
list_del_init(&gh->gh_list);
gh->gh_error = GLR_CANCELED;
- if (test_bit(HIF_RECURSE, &gh->gh_iflags))
- do_unrecurse(gh);
spin_unlock(&gl->gl_spin);
} else if (relaxed_state_ok(gl->gl_state, gh->gh_state, gh->gh_flags)) {
@@ -941,8 +851,6 @@ static void xmote_bh(struct gfs2_glock *gl, unsigned int ret)
spin_lock(&gl->gl_spin);
list_del_init(&gh->gh_list);
gh->gh_error = GLR_TRYFAILED;
- if (test_bit(HIF_RECURSE, &gh->gh_iflags))
- do_unrecurse(gh);
spin_unlock(&gl->gl_spin);
} else {
@@ -1161,8 +1069,6 @@ static int glock_wait_internal(struct gfs2_holder *gh)
!list_empty(&gh->gh_list)) {
list_del_init(&gh->gh_list);
gh->gh_error = GLR_TRYFAILED;
- if (test_bit(HIF_RECURSE, &gh->gh_iflags))
- do_unrecurse(gh);
run_queue(gl);
spin_unlock(&gl->gl_spin);
return gh->gh_error;
@@ -1191,9 +1097,6 @@ static int glock_wait_internal(struct gfs2_holder *gh)
if (gh->gh_error) {
spin_lock(&gl->gl_spin);
list_del_init(&gh->gh_list);
- if (test_and_clear_bit(HIF_RECURSE,
- &gh->gh_iflags))
- do_unrecurse(gh);
spin_unlock(&gl->gl_spin);
}
}
@@ -1202,8 +1105,6 @@ static int glock_wait_internal(struct gfs2_holder *gh)
gl->gl_req_gh = NULL;
gl->gl_req_bh = NULL;
clear_bit(GLF_LOCK, &gl->gl_flags);
- if (test_bit(HIF_RECURSE, &gh->gh_iflags))
- handle_recurse(gh);
run_queue(gl);
spin_unlock(&gl->gl_spin);
}
@@ -1225,40 +1126,6 @@ find_holder_by_owner(struct list_head *head, struct task_struct *owner)
}
/**
- * recurse_check -
- *
- * Make sure the new holder is compatible with the pre-existing one.
- *
- */
-
-static int recurse_check(struct gfs2_holder *existing, struct gfs2_holder *new,
- unsigned int state)
-{
- struct gfs2_sbd *sdp = existing->gh_gl->gl_sbd;
-
- if (gfs2_assert_warn(sdp, (new->gh_flags & LM_FLAG_ANY) ||
- !(existing->gh_flags & LM_FLAG_ANY)))
- goto fail;
-
- if (gfs2_assert_warn(sdp, (existing->gh_flags & GL_LOCAL_EXCL) ||
- !(new->gh_flags & GL_LOCAL_EXCL)))
- goto fail;
-
- if (gfs2_assert_warn(sdp, relaxed_state_ok(state, new->gh_state,
- new->gh_flags)))
- goto fail;
-
- return 0;
-
-fail:
- print_symbol(KERN_WARNING "GFS2: Existing holder from %s\n",
- existing->gh_ip);
- print_symbol(KERN_WARNING "GFS2: New holder from %s\n", new->gh_ip);
- set_bit(HIF_ABORTED, &new->gh_iflags);
- return -EINVAL;
-}
-
-/**
* add_to_queue - Add a holder to the wait queue (but look for recursion)
* @gh: the holder structure to add
*
@@ -1271,37 +1138,20 @@ static void add_to_queue(struct gfs2_holder *gh)
BUG_ON(!gh->gh_owner);
- if (!gh->gh_owner)
- goto out;
-
existing = find_holder_by_owner(&gl->gl_holders, gh->gh_owner);
if (existing) {
- if (recurse_check(existing, gh, gl->gl_state))
- return;
-
- list_add_tail(&gh->gh_list, &gl->gl_holders);
- set_bit(HIF_HOLDER, &gh->gh_iflags);
-
- gh->gh_error = 0;
- complete(&gh->gh_wait);
-
- return;
+ print_symbol(KERN_WARNING "original: %s\n", existing->gh_ip);
+ print_symbol(KERN_WARNING "new: %s\n", gh->gh_ip);
+ BUG();
}
existing = find_holder_by_owner(&gl->gl_waiters3, gh->gh_owner);
if (existing) {
- if (recurse_check(existing, gh, existing->gh_state))
- return;
-
- set_bit(HIF_RECURSE, &gh->gh_iflags);
- set_bit(HIF_RECURSE, &existing->gh_iflags);
-
- list_add_tail(&gh->gh_list, &gl->gl_waiters3);
-
- return;
+ print_symbol(KERN_WARNING "original: %s\n", existing->gh_ip);
+ print_symbol(KERN_WARNING "new: %s\n", gh->gh_ip);
+ BUG();
}
- out:
if (gh->gh_flags & LM_FLAG_PRIORITY)
list_add(&gh->gh_list, &gl->gl_waiters3);
else
diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h
index 761f001..84dd2f5 100644
--- a/fs/gfs2/incore.h
+++ b/fs/gfs2/incore.h
@@ -146,7 +146,6 @@ enum {
HIF_DEALLOC = 5,
HIF_HOLDER = 6,
HIF_FIRST = 7,
- HIF_RECURSE = 8,
HIF_ABORTED = 9,
};
diff --git a/fs/gfs2/recovery.c b/fs/gfs2/recovery.c
index e91c2bd..7d46796 100644
--- a/fs/gfs2/recovery.c
+++ b/fs/gfs2/recovery.c
@@ -436,30 +436,35 @@ int gfs2_recover_journal(struct gfs2_jdesc *jd)
unsigned int pass;
int error;
- fs_info(sdp, "jid=%u: Trying to acquire journal lock...\n", jd->jd_jid);
-
- /* Aquire the journal lock so we can do recovery */
-
- error = gfs2_glock_nq_num(sdp, jd->jd_jid, &gfs2_journal_glops,
- LM_ST_EXCLUSIVE,
- LM_FLAG_NOEXP | LM_FLAG_TRY | GL_NOCACHE,
- &j_gh);
- switch (error) {
- case 0:
- break;
+ if (jd->jd_jid != sdp->sd_lockstruct.ls_jid) {
+ fs_info(sdp, "jid=%u: Trying to acquire journal lock...\n",
+ jd->jd_jid);
- case GLR_TRYFAILED:
- fs_info(sdp, "jid=%u: Busy\n", jd->jd_jid);
- error = 0;
+ /* Aquire the journal lock so we can do recovery */
- default:
- goto fail;
- };
+ error = gfs2_glock_nq_num(sdp, jd->jd_jid, &gfs2_journal_glops,
+ LM_ST_EXCLUSIVE,
+ LM_FLAG_NOEXP | LM_FLAG_TRY | GL_NOCACHE,
+ &j_gh);
+ switch (error) {
+ case 0:
+ break;
+
+ case GLR_TRYFAILED:
+ fs_info(sdp, "jid=%u: Busy\n", jd->jd_jid);
+ error = 0;
+
+ default:
+ goto fail;
+ };
- error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED,
- LM_FLAG_NOEXP, &ji_gh);
- if (error)
- goto fail_gunlock_j;
+ error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED,
+ LM_FLAG_NOEXP, &ji_gh);
+ if (error)
+ goto fail_gunlock_j;
+ } else {
+ fs_info(sdp, "jid=%u, already locked for use\n", jd->jd_jid);
+ }
fs_info(sdp, "jid=%u: Looking at journal...\n", jd->jd_jid);
@@ -481,10 +486,8 @@ int gfs2_recover_journal(struct gfs2_jdesc *jd)
error = gfs2_glock_nq_init(sdp->sd_trans_gl,
LM_ST_SHARED,
- LM_FLAG_NOEXP |
- LM_FLAG_PRIORITY |
- GL_NEVER_RECURSE |
- GL_NOCANCEL |
+ LM_FLAG_NOEXP | LM_FLAG_PRIORITY |
+ GL_NEVER_RECURSE | GL_NOCANCEL |
GL_NOCACHE,
&t_gh);
if (error)
@@ -521,37 +524,35 @@ int gfs2_recover_journal(struct gfs2_jdesc *jd)
goto fail_gunlock_tr;
gfs2_glock_dq_uninit(&t_gh);
-
t = DIV_ROUND_UP(jiffies - t, HZ);
-
fs_info(sdp, "jid=%u: Journal replayed in %lus\n",
jd->jd_jid, t);
}
- gfs2_glock_dq_uninit(&ji_gh);
+ if (jd->jd_jid != sdp->sd_lockstruct.ls_jid)
+ gfs2_glock_dq_uninit(&ji_gh);
gfs2_lm_recovery_done(sdp, jd->jd_jid, LM_RD_SUCCESS);
- gfs2_glock_dq_uninit(&j_gh);
+ if (jd->jd_jid != sdp->sd_lockstruct.ls_jid)
+ gfs2_glock_dq_uninit(&j_gh);
fs_info(sdp, "jid=%u: Done\n", jd->jd_jid);
-
return 0;
- fail_gunlock_tr:
+fail_gunlock_tr:
gfs2_glock_dq_uninit(&t_gh);
-
- fail_gunlock_ji:
- gfs2_glock_dq_uninit(&ji_gh);
-
- fail_gunlock_j:
- gfs2_glock_dq_uninit(&j_gh);
+fail_gunlock_ji:
+ if (jd->jd_jid != sdp->sd_lockstruct.ls_jid) {
+ gfs2_glock_dq_uninit(&ji_gh);
+fail_gunlock_j:
+ gfs2_glock_dq_uninit(&j_gh);
+ }
fs_info(sdp, "jid=%u: %s\n", jd->jd_jid, (error) ? "Failed" : "Done");
- fail:
+fail:
gfs2_lm_recovery_done(sdp, jd->jd_jid, LM_RD_GAVEUP);
-
return error;
}
generated by cgit v0.10.2 at 2024-11-08 22:47:40 (GMT)