ocfs2: further debugfs cleanups
There is no need to check return value of debugfs_create functions, but the last sweep through ocfs missed a number of places where this was happening. There is also no need to save the individual dentries for the debugfs files, as everything is can just be removed at once when the directory is removed. By getting rid of the file dentries for the debugfs entries, a bit of local memory can be saved as well. [colin.king@canonical.com: ensure ret is set to zero before returning] Link: http://lkml.kernel.org/r/20190807121929.28918-1-colin.king@canonical.com Link: http://lkml.kernel.org/r/20190731132119.GA12603@kroah.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Colin Ian King <colin.king@canonical.com> Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com> Cc: Mark Fasheh <mark@fasheh.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Jia Guo <guojia12@huawei.com> Cc: Junxiao Bi <junxiao.bi@oracle.com> Cc: Changwei Ge <gechangwei@live.cn> Cc: Gang He <ghe@suse.com> Cc: Jun Piao <piaojun@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>alistair/sunxi64-5.4-dsi
Greg Kroah-Hartman
Linus Torvalds
parent
963abb9aeb
commit
5e7a3ed9f1
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@ -231,14 +231,6 @@ static int blockcheck_u64_get(void *data, u64 *val)
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}
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DEFINE_SIMPLE_ATTRIBUTE(blockcheck_fops, blockcheck_u64_get, NULL, "%llu\n");
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static struct dentry *blockcheck_debugfs_create(const char *name,
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struct dentry *parent,
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u64 *value)
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{
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return debugfs_create_file(name, S_IFREG | S_IRUSR, parent, value,
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&blockcheck_fops);
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}
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static void ocfs2_blockcheck_debug_remove(struct ocfs2_blockcheck_stats *stats)
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{
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if (stats) {
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@ -250,16 +242,20 @@ static void ocfs2_blockcheck_debug_remove(struct ocfs2_blockcheck_stats *stats)
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static void ocfs2_blockcheck_debug_install(struct ocfs2_blockcheck_stats *stats,
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struct dentry *parent)
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{
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stats->b_debug_dir = debugfs_create_dir("blockcheck", parent);
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struct dentry *dir;
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blockcheck_debugfs_create("blocks_checked", stats->b_debug_dir,
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&stats->b_check_count);
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dir = debugfs_create_dir("blockcheck", parent);
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stats->b_debug_dir = dir;
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blockcheck_debugfs_create("checksums_failed", stats->b_debug_dir,
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&stats->b_failure_count);
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debugfs_create_file("blocks_checked", S_IFREG | S_IRUSR, dir,
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&stats->b_check_count, &blockcheck_fops);
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debugfs_create_file("checksums_failed", S_IFREG | S_IRUSR, dir,
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&stats->b_failure_count, &blockcheck_fops);
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debugfs_create_file("ecc_recoveries", S_IFREG | S_IRUSR, dir,
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&stats->b_recover_count, &blockcheck_fops);
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blockcheck_debugfs_create("ecc_recoveries", stats->b_debug_dir,
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&stats->b_recover_count);
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}
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#else
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static inline void ocfs2_blockcheck_debug_install(struct ocfs2_blockcheck_stats *stats,
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@ -225,10 +225,6 @@ struct o2hb_region {
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unsigned int hr_region_num;
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struct dentry *hr_debug_dir;
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struct dentry *hr_debug_livenodes;
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struct dentry *hr_debug_regnum;
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struct dentry *hr_debug_elapsed_time;
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struct dentry *hr_debug_pinned;
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struct o2hb_debug_buf *hr_db_livenodes;
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struct o2hb_debug_buf *hr_db_regnum;
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struct o2hb_debug_buf *hr_db_elapsed_time;
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@ -1394,21 +1390,20 @@ void o2hb_exit(void)
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kfree(o2hb_db_failedregions);
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}
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static struct dentry *o2hb_debug_create(const char *name, struct dentry *dir,
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struct o2hb_debug_buf **db, int db_len,
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int type, int size, int len, void *data)
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static void o2hb_debug_create(const char *name, struct dentry *dir,
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struct o2hb_debug_buf **db, int db_len, int type,
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int size, int len, void *data)
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{
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*db = kmalloc(db_len, GFP_KERNEL);
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if (!*db)
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return NULL;
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return;
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(*db)->db_type = type;
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(*db)->db_size = size;
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(*db)->db_len = len;
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(*db)->db_data = data;
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return debugfs_create_file(name, S_IFREG|S_IRUSR, dir, *db,
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&o2hb_debug_fops);
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debugfs_create_file(name, S_IFREG|S_IRUSR, dir, *db, &o2hb_debug_fops);
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}
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static void o2hb_debug_init(void)
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@ -1525,11 +1520,7 @@ static void o2hb_region_release(struct config_item *item)
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kfree(reg->hr_slots);
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debugfs_remove(reg->hr_debug_livenodes);
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debugfs_remove(reg->hr_debug_regnum);
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debugfs_remove(reg->hr_debug_elapsed_time);
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debugfs_remove(reg->hr_debug_pinned);
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debugfs_remove(reg->hr_debug_dir);
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debugfs_remove_recursive(reg->hr_debug_dir);
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kfree(reg->hr_db_livenodes);
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kfree(reg->hr_db_regnum);
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kfree(reg->hr_db_elapsed_time);
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@ -1988,69 +1979,33 @@ static struct o2hb_heartbeat_group *to_o2hb_heartbeat_group(struct config_group
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: NULL;
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}
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static int o2hb_debug_region_init(struct o2hb_region *reg, struct dentry *dir)
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static void o2hb_debug_region_init(struct o2hb_region *reg,
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struct dentry *parent)
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{
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int ret = -ENOMEM;
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struct dentry *dir;
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reg->hr_debug_dir =
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debugfs_create_dir(config_item_name(®->hr_item), dir);
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if (!reg->hr_debug_dir) {
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mlog_errno(ret);
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goto bail;
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}
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dir = debugfs_create_dir(config_item_name(®->hr_item), parent);
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reg->hr_debug_dir = dir;
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reg->hr_debug_livenodes =
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o2hb_debug_create(O2HB_DEBUG_LIVENODES,
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reg->hr_debug_dir,
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&(reg->hr_db_livenodes),
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sizeof(*(reg->hr_db_livenodes)),
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O2HB_DB_TYPE_REGION_LIVENODES,
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sizeof(reg->hr_live_node_bitmap),
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O2NM_MAX_NODES, reg);
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if (!reg->hr_debug_livenodes) {
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mlog_errno(ret);
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goto bail;
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}
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o2hb_debug_create(O2HB_DEBUG_LIVENODES, dir, &(reg->hr_db_livenodes),
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sizeof(*(reg->hr_db_livenodes)),
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O2HB_DB_TYPE_REGION_LIVENODES,
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sizeof(reg->hr_live_node_bitmap), O2NM_MAX_NODES,
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reg);
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reg->hr_debug_regnum =
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o2hb_debug_create(O2HB_DEBUG_REGION_NUMBER,
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reg->hr_debug_dir,
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&(reg->hr_db_regnum),
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sizeof(*(reg->hr_db_regnum)),
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O2HB_DB_TYPE_REGION_NUMBER,
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0, O2NM_MAX_NODES, reg);
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if (!reg->hr_debug_regnum) {
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mlog_errno(ret);
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goto bail;
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}
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o2hb_debug_create(O2HB_DEBUG_REGION_NUMBER, dir, &(reg->hr_db_regnum),
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sizeof(*(reg->hr_db_regnum)),
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O2HB_DB_TYPE_REGION_NUMBER, 0, O2NM_MAX_NODES, reg);
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reg->hr_debug_elapsed_time =
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o2hb_debug_create(O2HB_DEBUG_REGION_ELAPSED_TIME,
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reg->hr_debug_dir,
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&(reg->hr_db_elapsed_time),
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sizeof(*(reg->hr_db_elapsed_time)),
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O2HB_DB_TYPE_REGION_ELAPSED_TIME,
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0, 0, reg);
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if (!reg->hr_debug_elapsed_time) {
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mlog_errno(ret);
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goto bail;
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}
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o2hb_debug_create(O2HB_DEBUG_REGION_ELAPSED_TIME, dir,
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&(reg->hr_db_elapsed_time),
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sizeof(*(reg->hr_db_elapsed_time)),
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O2HB_DB_TYPE_REGION_ELAPSED_TIME, 0, 0, reg);
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reg->hr_debug_pinned =
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o2hb_debug_create(O2HB_DEBUG_REGION_PINNED,
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reg->hr_debug_dir,
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&(reg->hr_db_pinned),
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sizeof(*(reg->hr_db_pinned)),
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O2HB_DB_TYPE_REGION_PINNED,
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0, 0, reg);
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if (!reg->hr_debug_pinned) {
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mlog_errno(ret);
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goto bail;
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}
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o2hb_debug_create(O2HB_DEBUG_REGION_PINNED, dir, &(reg->hr_db_pinned),
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sizeof(*(reg->hr_db_pinned)),
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O2HB_DB_TYPE_REGION_PINNED, 0, 0, reg);
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ret = 0;
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bail:
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return ret;
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}
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static struct config_item *o2hb_heartbeat_group_make_item(struct config_group *group,
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@ -2106,11 +2061,7 @@ static struct config_item *o2hb_heartbeat_group_make_item(struct config_group *g
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if (ret)
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goto unregister_handler;
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ret = o2hb_debug_region_init(reg, o2hb_debug_dir);
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if (ret) {
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config_item_put(®->hr_item);
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goto unregister_handler;
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}
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o2hb_debug_region_init(reg, o2hb_debug_dir);
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return ®->hr_item;
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@ -142,7 +142,6 @@ struct dlm_ctxt
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atomic_t res_tot_count;
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atomic_t res_cur_count;
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struct dlm_debug_ctxt *dlm_debug_ctxt;
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struct dentry *dlm_debugfs_subroot;
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/* NOTE: Next three are protected by dlm_domain_lock */
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@ -853,67 +853,34 @@ static const struct file_operations debug_state_fops = {
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/* files in subroot */
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void dlm_debug_init(struct dlm_ctxt *dlm)
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{
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struct dlm_debug_ctxt *dc = dlm->dlm_debug_ctxt;
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/* for dumping dlm_ctxt */
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dc->debug_state_dentry = debugfs_create_file(DLM_DEBUGFS_DLM_STATE,
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S_IFREG|S_IRUSR,
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dlm->dlm_debugfs_subroot,
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dlm, &debug_state_fops);
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debugfs_create_file(DLM_DEBUGFS_DLM_STATE, S_IFREG|S_IRUSR,
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dlm->dlm_debugfs_subroot, dlm, &debug_state_fops);
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/* for dumping lockres */
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dc->debug_lockres_dentry =
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debugfs_create_file(DLM_DEBUGFS_LOCKING_STATE,
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S_IFREG|S_IRUSR,
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dlm->dlm_debugfs_subroot,
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dlm, &debug_lockres_fops);
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debugfs_create_file(DLM_DEBUGFS_LOCKING_STATE, S_IFREG|S_IRUSR,
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dlm->dlm_debugfs_subroot, dlm, &debug_lockres_fops);
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/* for dumping mles */
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dc->debug_mle_dentry = debugfs_create_file(DLM_DEBUGFS_MLE_STATE,
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S_IFREG|S_IRUSR,
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dlm->dlm_debugfs_subroot,
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dlm, &debug_mle_fops);
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debugfs_create_file(DLM_DEBUGFS_MLE_STATE, S_IFREG|S_IRUSR,
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dlm->dlm_debugfs_subroot, dlm, &debug_mle_fops);
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/* for dumping lockres on the purge list */
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dc->debug_purgelist_dentry =
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debugfs_create_file(DLM_DEBUGFS_PURGE_LIST,
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S_IFREG|S_IRUSR,
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dlm->dlm_debugfs_subroot,
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dlm, &debug_purgelist_fops);
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}
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void dlm_debug_shutdown(struct dlm_ctxt *dlm)
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{
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struct dlm_debug_ctxt *dc = dlm->dlm_debug_ctxt;
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if (dc) {
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debugfs_remove(dc->debug_purgelist_dentry);
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debugfs_remove(dc->debug_mle_dentry);
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debugfs_remove(dc->debug_lockres_dentry);
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debugfs_remove(dc->debug_state_dentry);
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kfree(dc);
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dc = NULL;
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}
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debugfs_create_file(DLM_DEBUGFS_PURGE_LIST, S_IFREG|S_IRUSR,
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dlm->dlm_debugfs_subroot, dlm,
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&debug_purgelist_fops);
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}
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/* subroot - domain dir */
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int dlm_create_debugfs_subroot(struct dlm_ctxt *dlm)
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void dlm_create_debugfs_subroot(struct dlm_ctxt *dlm)
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{
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dlm->dlm_debug_ctxt = kzalloc(sizeof(struct dlm_debug_ctxt),
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GFP_KERNEL);
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if (!dlm->dlm_debug_ctxt) {
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mlog_errno(-ENOMEM);
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return -ENOMEM;
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}
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dlm->dlm_debugfs_subroot = debugfs_create_dir(dlm->name,
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dlm_debugfs_root);
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return 0;
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}
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void dlm_destroy_debugfs_subroot(struct dlm_ctxt *dlm)
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{
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debugfs_remove(dlm->dlm_debugfs_subroot);
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debugfs_remove_recursive(dlm->dlm_debugfs_subroot);
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}
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/* debugfs root */
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@ -14,13 +14,6 @@ void dlm_print_one_mle(struct dlm_master_list_entry *mle);
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#ifdef CONFIG_DEBUG_FS
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struct dlm_debug_ctxt {
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struct dentry *debug_state_dentry;
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struct dentry *debug_lockres_dentry;
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struct dentry *debug_mle_dentry;
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struct dentry *debug_purgelist_dentry;
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};
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struct debug_lockres {
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int dl_len;
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char *dl_buf;
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@ -29,9 +22,8 @@ struct debug_lockres {
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};
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void dlm_debug_init(struct dlm_ctxt *dlm);
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void dlm_debug_shutdown(struct dlm_ctxt *dlm);
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int dlm_create_debugfs_subroot(struct dlm_ctxt *dlm);
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void dlm_create_debugfs_subroot(struct dlm_ctxt *dlm);
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void dlm_destroy_debugfs_subroot(struct dlm_ctxt *dlm);
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void dlm_create_debugfs_root(void);
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@ -42,13 +34,9 @@ void dlm_destroy_debugfs_root(void);
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static inline void dlm_debug_init(struct dlm_ctxt *dlm)
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{
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}
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static inline void dlm_debug_shutdown(struct dlm_ctxt *dlm)
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static inline void dlm_create_debugfs_subroot(struct dlm_ctxt *dlm)
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{
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}
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static inline int dlm_create_debugfs_subroot(struct dlm_ctxt *dlm)
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{
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return 0;
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}
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static inline void dlm_destroy_debugfs_subroot(struct dlm_ctxt *dlm)
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{
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}
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@ -387,7 +387,6 @@ static void dlm_destroy_dlm_worker(struct dlm_ctxt *dlm)
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static void dlm_complete_dlm_shutdown(struct dlm_ctxt *dlm)
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{
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dlm_unregister_domain_handlers(dlm);
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dlm_debug_shutdown(dlm);
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dlm_complete_thread(dlm);
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dlm_complete_recovery_thread(dlm);
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dlm_destroy_dlm_worker(dlm);
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@ -1938,7 +1937,6 @@ bail:
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if (status) {
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dlm_unregister_domain_handlers(dlm);
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dlm_debug_shutdown(dlm);
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dlm_complete_thread(dlm);
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dlm_complete_recovery_thread(dlm);
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dlm_destroy_dlm_worker(dlm);
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@ -1992,9 +1990,7 @@ static struct dlm_ctxt *dlm_alloc_ctxt(const char *domain,
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dlm->key = key;
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dlm->node_num = o2nm_this_node();
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ret = dlm_create_debugfs_subroot(dlm);
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if (ret < 0)
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goto leave;
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dlm_create_debugfs_subroot(dlm);
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spin_lock_init(&dlm->spinlock);
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spin_lock_init(&dlm->master_lock);
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@ -2056,6 +2052,7 @@ static struct dlm_ctxt *dlm_alloc_ctxt(const char *domain,
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mlog(0, "context init: refcount %u\n",
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kref_read(&dlm->dlm_refs));
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ret = 0;
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leave:
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if (ret < 0 && dlm) {
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if (dlm->master_hash)
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@ -3012,8 +3012,6 @@ struct ocfs2_dlm_debug *ocfs2_new_dlm_debug(void)
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kref_init(&dlm_debug->d_refcnt);
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INIT_LIST_HEAD(&dlm_debug->d_lockres_tracking);
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dlm_debug->d_locking_state = NULL;
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dlm_debug->d_locking_filter = NULL;
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dlm_debug->d_filter_secs = 0;
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out:
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return dlm_debug;
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@ -3282,27 +3280,19 @@ static void ocfs2_dlm_init_debug(struct ocfs2_super *osb)
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{
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struct ocfs2_dlm_debug *dlm_debug = osb->osb_dlm_debug;
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dlm_debug->d_locking_state = debugfs_create_file("locking_state",
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S_IFREG|S_IRUSR,
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osb->osb_debug_root,
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osb,
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&ocfs2_dlm_debug_fops);
|
||||
debugfs_create_file("locking_state", S_IFREG|S_IRUSR,
|
||||
osb->osb_debug_root, osb, &ocfs2_dlm_debug_fops);
|
||||
|
||||
dlm_debug->d_locking_filter = debugfs_create_u32("locking_filter",
|
||||
0600,
|
||||
osb->osb_debug_root,
|
||||
&dlm_debug->d_filter_secs);
|
||||
debugfs_create_u32("locking_filter", 0600, osb->osb_debug_root,
|
||||
&dlm_debug->d_filter_secs);
|
||||
}
|
||||
|
||||
static void ocfs2_dlm_shutdown_debug(struct ocfs2_super *osb)
|
||||
{
|
||||
struct ocfs2_dlm_debug *dlm_debug = osb->osb_dlm_debug;
|
||||
|
||||
if (dlm_debug) {
|
||||
debugfs_remove(dlm_debug->d_locking_state);
|
||||
debugfs_remove(dlm_debug->d_locking_filter);
|
||||
if (dlm_debug)
|
||||
ocfs2_put_dlm_debug(dlm_debug);
|
||||
}
|
||||
}
|
||||
|
||||
int ocfs2_dlm_init(struct ocfs2_super *osb)
|
||||
|
|
|
|||
|
|
@ -223,8 +223,6 @@ struct ocfs2_orphan_scan {
|
|||
|
||||
struct ocfs2_dlm_debug {
|
||||
struct kref d_refcnt;
|
||||
struct dentry *d_locking_state;
|
||||
struct dentry *d_locking_filter;
|
||||
u32 d_filter_secs;
|
||||
struct list_head d_lockres_tracking;
|
||||
};
|
||||
|
|
@ -401,7 +399,6 @@ struct ocfs2_super
|
|||
struct ocfs2_dlm_debug *osb_dlm_debug;
|
||||
|
||||
struct dentry *osb_debug_root;
|
||||
struct dentry *osb_ctxt;
|
||||
|
||||
wait_queue_head_t recovery_event;
|
||||
|
||||
|
|
|
|||
|
|
@ -1080,10 +1080,8 @@ static int ocfs2_fill_super(struct super_block *sb, void *data, int silent)
|
|||
osb->osb_debug_root = debugfs_create_dir(osb->uuid_str,
|
||||
ocfs2_debugfs_root);
|
||||
|
||||
osb->osb_ctxt = debugfs_create_file("fs_state", S_IFREG|S_IRUSR,
|
||||
osb->osb_debug_root,
|
||||
osb,
|
||||
&ocfs2_osb_debug_fops);
|
||||
debugfs_create_file("fs_state", S_IFREG|S_IRUSR, osb->osb_debug_root,
|
||||
osb, &ocfs2_osb_debug_fops);
|
||||
|
||||
if (ocfs2_meta_ecc(osb))
|
||||
ocfs2_blockcheck_stats_debugfs_install( &osb->osb_ecc_stats,
|
||||
|
|
@ -1861,8 +1859,6 @@ static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err)
|
|||
|
||||
kset_unregister(osb->osb_dev_kset);
|
||||
|
||||
debugfs_remove(osb->osb_ctxt);
|
||||
|
||||
/* Orphan scan should be stopped as early as possible */
|
||||
ocfs2_orphan_scan_stop(osb);
|
||||
|
||||
|
|
@ -1918,7 +1914,7 @@ static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err)
|
|||
ocfs2_dlm_shutdown(osb, hangup_needed);
|
||||
|
||||
ocfs2_blockcheck_stats_debugfs_remove(&osb->osb_ecc_stats);
|
||||
debugfs_remove(osb->osb_debug_root);
|
||||
debugfs_remove_recursive(osb->osb_debug_root);
|
||||
|
||||
if (hangup_needed)
|
||||
ocfs2_cluster_hangup(osb->uuid_str, strlen(osb->uuid_str));
|
||||
|
|
|
|||
Loading…
Reference in New Issue