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authorRafael J. Wysocki <rjw@sisk.pl>2010-09-20 13:44:38 -0400
committerRafael J. Wysocki <rjw@sisk.pl>2010-10-16 19:57:42 -0400
commit266f1a25eff5ff98c498d7754a419aacfd88f71c (patch)
tree1666c23a92f3845be4644dc26728574119ca61f9 /kernel/power
parentbcb5ba8b4e8a5ae14b27351bdf499dd4c3bcc944 (diff)
PM / Hibernate: Improve comments in hibernate_preallocate_memory()
One comment in hibernate_preallocate_memory() is wrong, so fix it and add one more comment to clarify the meaning of the fixed one. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'kernel/power')
-rw-r--r--kernel/power/snapshot.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c
index d3f795f01bbc..d9191b40cf6e 100644
--- a/kernel/power/snapshot.c
+++ b/kernel/power/snapshot.c
@@ -1318,12 +1318,14 @@ int hibernate_preallocate_memory(void)
1318 1318
1319 /* Compute the maximum number of saveable pages to leave in memory. */ 1319 /* Compute the maximum number of saveable pages to leave in memory. */
1320 max_size = (count - (size + PAGES_FOR_IO)) / 2 - 2 * SPARE_PAGES; 1320 max_size = (count - (size + PAGES_FOR_IO)) / 2 - 2 * SPARE_PAGES;
1321 /* Compute the desired number of image pages specified by image_size. */
1321 size = DIV_ROUND_UP(image_size, PAGE_SIZE); 1322 size = DIV_ROUND_UP(image_size, PAGE_SIZE);
1322 if (size > max_size) 1323 if (size > max_size)
1323 size = max_size; 1324 size = max_size;
1324 /* 1325 /*
1325 * If the maximum is not less than the current number of saveable pages 1326 * If the desired number of image pages is at least as large as the
1326 * in memory, allocate page frames for the image and we're done. 1327 * current number of saveable pages in memory, allocate page frames for
1328 * the image and we're done.
1327 */ 1329 */
1328 if (size >= saveable) { 1330 if (size >= saveable) {
1329 pages = preallocate_image_highmem(save_highmem); 1331 pages = preallocate_image_highmem(save_highmem);