pstore: Clarify context field przs as dprzs

Since "przs" (persistent ram zones) is a general name in the code now, so
rename the Oops-dump zones to dprzs from przs.

Based on a patch from Nobuhiro Iwamatsu.

Signed-off-by: Kees Cook <keescook@chromium.org>

diff --git a/fs/pstore/ram.c b/fs/pstore/ram.c
index 64fd6ea..3802224 100644 (file)
--- a/fs/pstore/ram.c
+++ b/fs/pstore/ram.c
@@ -85,10 +85,10 @@ MODULE_PARM_DESC(ramoops_ecc,
                "bytes ECC)");
 
 struct ramoops_context {
-       struct persistent_ram_zone **przs;
-       struct persistent_ram_zone *cprz;
-       struct persistent_ram_zone **fprzs;
-       struct persistent_ram_zone *mprz;
+       struct persistent_ram_zone **dprzs;     /* Oops dump zones */
+       struct persistent_ram_zone *cprz;       /* Console zone */
+       struct persistent_ram_zone **fprzs;     /* Ftrace zones */
+       struct persistent_ram_zone *mprz;       /* PMSG zone */
        phys_addr_t phys_addr;
        unsigned long size;
        unsigned int memtype;
@@ -256,7 +256,7 @@ static ssize_t ramoops_pstore_read(u64 *id, enum pstore_type_id *type,
 
        /* Find the next valid persistent_ram_zone for DMESG */
        while (cxt->dump_read_cnt < cxt->max_dump_cnt && !prz) {
-               prz = ramoops_get_next_prz(cxt->przs, &cxt->dump_read_cnt,
+               prz = ramoops_get_next_prz(cxt->dprzs, &cxt->dump_read_cnt,
                                           cxt->max_dump_cnt, id, type,
                                           PSTORE_TYPE_DMESG, 1);
                if (!prz_ok(prz))
@@ -430,10 +430,10 @@ static int notrace ramoops_pstore_write_buf(enum pstore_type_id type,
        if (part != 1)
                return -ENOSPC;
 
-       if (!cxt->przs)
+       if (!cxt->dprzs)
                return -ENOSPC;
 
-       prz = cxt->przs[cxt->dump_write_cnt];
+       prz = cxt->dprzs[cxt->dump_write_cnt];
 
        hlen = ramoops_write_kmsg_hdr(prz, compressed);
        if (size + hlen > prz->buffer_size)
@@ -473,7 +473,7 @@ static int ramoops_pstore_erase(enum pstore_type_id type, u64 id, int count,
        case PSTORE_TYPE_DMESG:
                if (id >= cxt->max_dump_cnt)
                        return -EINVAL;
-               prz = cxt->przs[id];
+               prz = cxt->dprzs[id];
                break;
        case PSTORE_TYPE_CONSOLE:
                prz = cxt->cprz;
@@ -513,11 +513,11 @@ static void ramoops_free_przs(struct ramoops_context *cxt)
        int i;
 
        /* Free dump PRZs */
-       if (cxt->przs) {
+       if (cxt->dprzs) {
                for (i = 0; i < cxt->max_dump_cnt; i++)
-                       persistent_ram_free(cxt->przs[i]);
+                       persistent_ram_free(cxt->dprzs[i]);
 
-               kfree(cxt->przs);
+               kfree(cxt->dprzs);
                cxt->max_dump_cnt = 0;
        }
 
@@ -771,7 +771,7 @@ static int ramoops_probe(struct platform_device *pdev)
 
        dump_mem_sz = cxt->size - cxt->console_size - cxt->ftrace_size
                        - cxt->pmsg_size;
-       err = ramoops_init_przs("dump", dev, cxt, &cxt->przs, &paddr,
+       err = ramoops_init_przs("dump", dev, cxt, &cxt->dprzs, &paddr,
                                dump_mem_sz, cxt->record_size,
                                &cxt->max_dump_cnt, 0, 0);
        if (err)