Merge with upstream to accommodate with thermal changes

This merge is performed to take commit c56f5c0342dfee11a1 ("Thermal: Make
Thermal trip points writeable") out of Linus' tree and then fixup power
supply class. This is needed since thermal stuff added a new argument:

  CC      drivers/power/power_supply_core.o
drivers/power/power_supply_core.c: In function ‘psy_register_thermal’:
drivers/power/power_supply_core.c:204:6: warning: passing argument 3 of ‘thermal_zone_device_register’ makes integer from pointer without a cast [enabled by default]
include/linux/thermal.h:154:29: note: expected ‘int’ but argument is of type ‘struct power_supply *’
drivers/power/power_supply_core.c:204:6: error: too few arguments to function ‘thermal_zone_device_register’
include/linux/thermal.h:154:29: note: declared here
make[1]: *** [drivers/power/power_supply_core.o] Error 1
make: *** [drivers/power/] Error 2

Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>

1 files changed, 13 insertions, 9 deletions

diff --git a/fs/buffer.c b/fs/buffer.c
index 838a9cf246bd..c7062c896d7c 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -1036,6 +1036,9 @@ grow_buffers(struct block_device *bdev, sector_t block, int size)
 static struct buffer_head *
 __getblk_slow(struct block_device *bdev, sector_t block, int size)
 {
+        int ret;
+        struct buffer_head *bh;
+
         /* Size must be multiple of hard sectorsize */
         if (unlikely(size & (bdev_logical_block_size(bdev)-1) ||
                         (size < 512 || size > PAGE_SIZE))) {
@@ -1048,20 +1051,21 @@ __getblk_slow(struct block_device *bdev, sector_t block, int size)
                 return NULL;
         }
 
-        for (;;) {
-                struct buffer_head * bh;
-                int ret;
+retry:
+        bh = __find_get_block(bdev, block, size);
+        if (bh)
+                return bh;
 
+        ret = grow_buffers(bdev, block, size);
+        if (ret == 0) {
+                free_more_memory();
+                goto retry;
+        } else if (ret > 0) {
                 bh = __find_get_block(bdev, block, size);
                 if (bh)
                         return bh;
-
-                ret = grow_buffers(bdev, block, size);
-                if (ret < 0)
-                        return NULL;
-                if (ret == 0)
-                        free_more_memory();
         }
+        return NULL;
 }
 
 /*