LU-3319 procfs: migrate quota proc handling to seq_files

[fs/lustre-release.git] / lustre / quota / qmt_pool.c

diff --git a/lustre/quota/qmt_pool.c b/lustre/quota/qmt_pool.c
index 92f6d70..afd450c 100644 (file)
--- a/lustre/quota/qmt_pool.c
+++ b/lustre/quota/qmt_pool.c
@@ -141,40 +141,37 @@ static cfs_hash_ops_t qpi_hash_ops = {
 };
 
 /* some procfs helpers */
-static int lprocfs_qpi_rd_state(char *page, char **start, off_t off,
-                               int count, int *eof, void *data)
+static int qpi_state_seq_show(struct seq_file *m, void *data)
 {
-       struct qmt_pool_info    *pool = (struct qmt_pool_info *)data;
-       int                      type, i = 0;
+       struct qmt_pool_info    *pool = m->private;
+       int                      type;
 
        LASSERT(pool != NULL);
 
-       i = snprintf(page, count,
-                    "pool:\n"
-                    "    id: %u\n"
-                    "    type: %s\n"
-                    "    ref: %d\n"
-                    "    least qunit: %lu\n",
-                    pool->qpi_key & 0x0000ffff,
-                    RES_NAME(pool->qpi_key >> 16),
-                    cfs_atomic_read(&pool->qpi_ref),
-                    pool->qpi_least_qunit);
-
+       seq_printf(m, "pool:\n"
+                  "    id: %u\n"
+                  "    type: %s\n"
+                  "    ref: %d\n"
+                  "    least qunit: %lu\n",
+                  pool->qpi_key & 0x0000ffff,
+                  RES_NAME(pool->qpi_key >> 16),
+                  cfs_atomic_read(&pool->qpi_ref),
+                  pool->qpi_least_qunit);
 
        for (type = 0; type < MAXQUOTAS; type++)
-               i += snprintf(page + i, count - i,
-                             "    %s:\n"
-                             "        #slv: %d\n"
-                             "        #lqe: %d\n",
-                             QTYPE_NAME(type),
-                             pool->qpi_slv_nr[type],
+               seq_printf(m, "    %s:\n"
+                          "        #slv: %d\n"
+                          "        #lqe: %d\n",
+                          QTYPE_NAME(type),
+                          pool->qpi_slv_nr[type],
                    cfs_atomic_read(&pool->qpi_site[type]->lqs_hash->hs_count));
 
-       return i;
+       return 0;
 }
+LPROC_SEQ_FOPS_RO(qpi_state);
 
-static struct lprocfs_vars lprocfs_quota_qpi_vars[] = {
-       { "info", lprocfs_qpi_rd_state, 0, 0},
+static struct lprocfs_seq_vars lprocfs_quota_qpi_vars[] = {
+       { "info",       &qpi_state_fops },
        { NULL }
 };
 
@@ -215,8 +212,8 @@ static int qmt_pool_alloc(const struct lu_env *env, struct qmt_device *qmt,
 
        /* create pool proc directory */
        sprintf(qti->qti_buf, "%s-0x%x", RES_NAME(pool_type), pool_id);
-       pool->qpi_proc = lprocfs_register(qti->qti_buf, qmt->qmt_proc,
-                                         lprocfs_quota_qpi_vars, pool);
+       pool->qpi_proc = lprocfs_seq_register(qti->qti_buf, qmt->qmt_proc,
+                                               lprocfs_quota_qpi_vars, pool);
        if (IS_ERR(pool->qpi_proc)) {
                rc = PTR_ERR(pool->qpi_proc);
                CERROR("%s: failed to create proc entry for pool %s (%d)\n",