[PATCH] swsusp: struct snapshot_handle cleanup

Add comments describing struct snapshot_handle and its members, change the
confusing name of its member 'page' to 'cur'.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 20 insertions, 20 deletions

diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c
index 979096c27773..81fe8de9e604 100644
--- a/kernel/power/snapshot.c
+++ b/kernel/power/snapshot.c
@@ -555,7 +555,7 @@ static inline struct pbe *pack_orig_addresses(unsigned long *buf, struct pbe *pb
 
 int snapshot_read_next(struct snapshot_handle *handle, size_t count)
 {
-        if (handle->page > nr_meta_pages + nr_copy_pages)
+        if (handle->cur > nr_meta_pages + nr_copy_pages)
                 return 0;
         if (!buffer) {
                 /* This makes the buffer be freed by swsusp_free() */
@@ -568,8 +568,8 @@ int snapshot_read_next(struct snapshot_handle *handle, size_t count)
                 handle->buffer = buffer;
                 handle->pbe = pagedir_nosave;
         }
-        if (handle->prev < handle->page) {
-                if (handle->page <= nr_meta_pages) {
+        if (handle->prev < handle->cur) {
+                if (handle->cur <= nr_meta_pages) {
                         handle->pbe = pack_orig_addresses(buffer, handle->pbe);
                         if (!handle->pbe)
                                 handle->pbe = pagedir_nosave;
@@ -577,15 +577,15 @@ int snapshot_read_next(struct snapshot_handle *handle, size_t count)
                         handle->buffer = (void *)handle->pbe->address;
                         handle->pbe = handle->pbe->next;
                 }
-                handle->prev = handle->page;
+                handle->prev = handle->cur;
         }
-        handle->buf_offset = handle->page_offset;
-        if (handle->page_offset + count >= PAGE_SIZE) {
-                count = PAGE_SIZE - handle->page_offset;
-                handle->page_offset = 0;
-                handle->page++;
+        handle->buf_offset = handle->cur_offset;
+        if (handle->cur_offset + count >= PAGE_SIZE) {
+                count = PAGE_SIZE - handle->cur_offset;
+                handle->cur_offset = 0;
+                handle->cur++;
         } else {
-                handle->page_offset += count;
+                handle->cur_offset += count;
         }
         handle->offset += count;
         return count;
@@ -820,7 +820,7 @@ int snapshot_write_next(struct snapshot_handle *handle, size_t count)
 {
         int error = 0;
 
-        if (handle->prev && handle->page > nr_meta_pages + nr_copy_pages)
+        if (handle->prev && handle->cur > nr_meta_pages + nr_copy_pages)
                 return 0;
         if (!buffer) {
                 /* This makes the buffer be freed by swsusp_free() */
@@ -831,7 +831,7 @@ int snapshot_write_next(struct snapshot_handle *handle, size_t count)
         if (!handle->offset)
                 handle->buffer = buffer;
         handle->sync_read = 1;
-        if (handle->prev < handle->page) {
+        if (handle->prev < handle->cur) {
                 if (!handle->prev) {
                         error = load_header(handle,
                                         (struct swsusp_info *)buffer);
@@ -854,15 +854,15 @@ int snapshot_write_next(struct snapshot_handle *handle, size_t count)
                         handle->buffer = get_buffer(handle);
                         handle->sync_read = 0;
                 }
-                handle->prev = handle->page;
+                handle->prev = handle->cur;
         }
-        handle->buf_offset = handle->page_offset;
-        if (handle->page_offset + count >= PAGE_SIZE) {
-                count = PAGE_SIZE - handle->page_offset;
-                handle->page_offset = 0;
-                handle->page++;
+        handle->buf_offset = handle->cur_offset;
+        if (handle->cur_offset + count >= PAGE_SIZE) {
+                count = PAGE_SIZE - handle->cur_offset;
+                handle->cur_offset = 0;
+                handle->cur++;
         } else {
-                handle->page_offset += count;
+                handle->cur_offset += count;
         }
         handle->offset += count;
         return count;
@@ -871,5 +871,5 @@ int snapshot_write_next(struct snapshot_handle *handle, size_t count)
 int snapshot_image_loaded(struct snapshot_handle *handle)
 {
         return !(!handle->pbe || handle->pbe->next || !nr_copy_pages ||
-                handle->page <= nr_meta_pages + nr_copy_pages);
+                handle->cur <= nr_meta_pages + nr_copy_pages);
 }