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path: root/fs/gfs2/sys.c
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Diffstat (limited to 'fs/gfs2/sys.c')
-rw-r--r--fs/gfs2/sys.c100
1 files changed, 66 insertions, 34 deletions
diff --git a/fs/gfs2/sys.c b/fs/gfs2/sys.c
index 8056b7b7238..3ab566ba569 100644
--- a/fs/gfs2/sys.c
+++ b/fs/gfs2/sys.c
@@ -7,6 +7,8 @@
* of the GNU General Public License version 2.
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/sched.h>
#include <linux/spinlock.h>
#include <linux/completion.h>
@@ -91,39 +93,37 @@ static ssize_t uuid_show(struct gfs2_sbd *sdp, char *buf)
static ssize_t freeze_show(struct gfs2_sbd *sdp, char *buf)
{
- unsigned int count;
-
- mutex_lock(&sdp->sd_freeze_lock);
- count = sdp->sd_freeze_count;
- mutex_unlock(&sdp->sd_freeze_lock);
+ struct super_block *sb = sdp->sd_vfs;
+ int frozen = (sb->s_writers.frozen == SB_UNFROZEN) ? 0 : 1;
- return snprintf(buf, PAGE_SIZE, "%u\n", count);
+ return snprintf(buf, PAGE_SIZE, "%u\n", frozen);
}
static ssize_t freeze_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
{
- ssize_t ret = len;
- int error = 0;
+ int error;
int n = simple_strtol(buf, NULL, 0);
if (!capable(CAP_SYS_ADMIN))
- return -EACCES;
+ return -EPERM;
switch (n) {
case 0:
- gfs2_unfreeze_fs(sdp);
+ error = thaw_super(sdp->sd_vfs);
break;
case 1:
- error = gfs2_freeze_fs(sdp);
+ error = freeze_super(sdp->sd_vfs);
break;
default:
- ret = -EINVAL;
+ return -EINVAL;
}
- if (error)
+ if (error) {
fs_warn(sdp, "freeze %d error %d", n, error);
+ return error;
+ }
- return ret;
+ return len;
}
static ssize_t withdraw_show(struct gfs2_sbd *sdp, char *buf)
@@ -135,14 +135,13 @@ static ssize_t withdraw_show(struct gfs2_sbd *sdp, char *buf)
static ssize_t withdraw_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
{
if (!capable(CAP_SYS_ADMIN))
- return -EACCES;
+ return -EPERM;
if (simple_strtol(buf, NULL, 0) != 1)
return -EINVAL;
- gfs2_lm_withdraw(sdp,
- "GFS2: fsid=%s: withdrawing from cluster at user's request\n",
- sdp->sd_fsname);
+ gfs2_lm_withdraw(sdp, "withdrawing from cluster at user's request\n");
+
return len;
}
@@ -150,7 +149,7 @@ static ssize_t statfs_sync_store(struct gfs2_sbd *sdp, const char *buf,
size_t len)
{
if (!capable(CAP_SYS_ADMIN))
- return -EACCES;
+ return -EPERM;
if (simple_strtol(buf, NULL, 0) != 1)
return -EINVAL;
@@ -163,7 +162,7 @@ static ssize_t quota_sync_store(struct gfs2_sbd *sdp, const char *buf,
size_t len)
{
if (!capable(CAP_SYS_ADMIN))
- return -EACCES;
+ return -EPERM;
if (simple_strtol(buf, NULL, 0) != 1)
return -EINVAL;
@@ -175,30 +174,40 @@ static ssize_t quota_sync_store(struct gfs2_sbd *sdp, const char *buf,
static ssize_t quota_refresh_user_store(struct gfs2_sbd *sdp, const char *buf,
size_t len)
{
+ struct kqid qid;
int error;
u32 id;
if (!capable(CAP_SYS_ADMIN))
- return -EACCES;
+ return -EPERM;
id = simple_strtoul(buf, NULL, 0);
- error = gfs2_quota_refresh(sdp, 1, id);
+ qid = make_kqid(current_user_ns(), USRQUOTA, id);
+ if (!qid_valid(qid))
+ return -EINVAL;
+
+ error = gfs2_quota_refresh(sdp, qid);
return error ? error : len;
}
static ssize_t quota_refresh_group_store(struct gfs2_sbd *sdp, const char *buf,
size_t len)
{
+ struct kqid qid;
int error;
u32 id;
if (!capable(CAP_SYS_ADMIN))
- return -EACCES;
+ return -EPERM;
id = simple_strtoul(buf, NULL, 0);
- error = gfs2_quota_refresh(sdp, 0, id);
+ qid = make_kqid(current_user_ns(), GRPQUOTA, id);
+ if (!qid_valid(qid))
+ return -EINVAL;
+
+ error = gfs2_quota_refresh(sdp, qid);
return error ? error : len;
}
@@ -213,7 +222,7 @@ static ssize_t demote_rq_store(struct gfs2_sbd *sdp, const char *buf, size_t len
int rv;
if (!capable(CAP_SYS_ADMIN))
- return -EACCES;
+ return -EPERM;
rv = sscanf(buf, "%u:%llu %15s", &gltype, &glnum,
mode);
@@ -231,8 +240,8 @@ static ssize_t demote_rq_store(struct gfs2_sbd *sdp, const char *buf, size_t len
if (gltype > LM_TYPE_JOURNAL)
return -EINVAL;
- if (gltype == LM_TYPE_NONDISK && glnum == GFS2_TRANS_LOCK)
- glops = &gfs2_trans_glops;
+ if (gltype == LM_TYPE_NONDISK && glnum == GFS2_FREEZE_LOCK)
+ glops = &gfs2_freeze_glops;
else
glops = gfs2_glops_list[gltype];
if (glops == NULL)
@@ -324,7 +333,7 @@ static ssize_t block_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
set_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags);
else if (val == 0) {
clear_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags);
- smp_mb__after_clear_bit();
+ smp_mb__after_atomic();
gfs2_glock_thaw(sdp);
} else {
ret = -EINVAL;
@@ -332,6 +341,28 @@ static ssize_t block_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
return ret;
}
+static ssize_t wdack_show(struct gfs2_sbd *sdp, char *buf)
+{
+ int val = completion_done(&sdp->sd_wdack) ? 1 : 0;
+
+ return sprintf(buf, "%d\n", val);
+}
+
+static ssize_t wdack_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
+{
+ ssize_t ret = len;
+ int val;
+
+ val = simple_strtol(buf, NULL, 0);
+
+ if ((val == 1) &&
+ !strcmp(sdp->sd_lockstruct.ls_ops->lm_proto_name, "lock_dlm"))
+ complete(&sdp->sd_wdack);
+ else
+ ret = -EINVAL;
+ return ret;
+}
+
static ssize_t lkfirst_show(struct gfs2_sbd *sdp, char *buf)
{
struct lm_lockstruct *ls = &sdp->sd_lockstruct;
@@ -376,6 +407,9 @@ int gfs2_recover_set(struct gfs2_sbd *sdp, unsigned jid)
struct gfs2_jdesc *jd;
int rv;
+ /* Wait for our primary journal to be initialized */
+ wait_for_completion(&sdp->sd_journal_ready);
+
spin_lock(&sdp->sd_jindex_spin);
rv = -EBUSY;
if (sdp->sd_jdesc->jd_jid == jid)
@@ -451,7 +485,7 @@ static ssize_t jid_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
rv = jid = -EINVAL;
sdp->sd_lockstruct.ls_jid = jid;
clear_bit(SDF_NOJOURNALID, &sdp->sd_flags);
- smp_mb__after_clear_bit();
+ smp_mb__after_atomic();
wake_up_bit(&sdp->sd_flags, SDF_NOJOURNALID);
out:
spin_unlock(&sdp->sd_jindex_spin);
@@ -463,7 +497,7 @@ static struct gfs2_attr gdlm_attr_##_name = __ATTR(_name,_mode,_show,_store)
GDLM_ATTR(proto_name, 0444, proto_name_show, NULL);
GDLM_ATTR(block, 0644, block_show, block_store);
-GDLM_ATTR(withdraw, 0644, withdraw_show, withdraw_store);
+GDLM_ATTR(withdraw, 0644, wdack_show, wdack_store);
GDLM_ATTR(jid, 0644, jid_show, jid_store);
GDLM_ATTR(first, 0644, lkfirst_show, lkfirst_store);
GDLM_ATTR(first_done, 0444, first_done_show, NULL);
@@ -502,7 +536,7 @@ static ssize_t quota_scale_store(struct gfs2_sbd *sdp, const char *buf,
unsigned int x, y;
if (!capable(CAP_SYS_ADMIN))
- return -EACCES;
+ return -EPERM;
if (sscanf(buf, "%u %u", &x, &y) != 2 || !y)
return -EINVAL;
@@ -521,7 +555,7 @@ static ssize_t tune_set(struct gfs2_sbd *sdp, unsigned int *field,
unsigned int x;
if (!capable(CAP_SYS_ADMIN))
- return -EACCES;
+ return -EPERM;
x = simple_strtoul(buf, NULL, 0);
@@ -557,7 +591,6 @@ TUNE_ATTR(max_readahead, 0);
TUNE_ATTR(complain_secs, 0);
TUNE_ATTR(statfs_slow, 0);
TUNE_ATTR(new_files_jdata, 0);
-TUNE_ATTR(quota_simul_sync, 1);
TUNE_ATTR(statfs_quantum, 1);
TUNE_ATTR_3(quota_scale, quota_scale_show, quota_scale_store);
@@ -567,7 +600,6 @@ static struct attribute *tune_attrs[] = {
&tune_attr_max_readahead.attr,
&tune_attr_complain_secs.attr,
&tune_attr_statfs_slow.attr,
- &tune_attr_quota_simul_sync.attr,
&tune_attr_statfs_quantum.attr,
&tune_attr_quota_scale.attr,
&tune_attr_new_files_jdata.attr,
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 20:31:17 +0000