Merge branch 'master' of ssh://gits.daterainc.com:2984/project/2013.KERNEL/bcache-tools

Issue DAT-

bcache.c

@@ -452,7 +452,7 @@ static void do_write_sb(int fd, struct cache_sb *sb)
 }
 
 void write_backingdev_sb(int fd, unsigned block_size, unsigned *bucket_sizes,
-				bool writeback, uint64_t data_offset,
+				unsigned mode, uint64_t data_offset,
 				const char *label,
 				uuid_le set_uuid)
 {
@@ -474,9 +474,7 @@ void write_backingdev_sb(int fd, unsigned block_size, unsigned *bucket_sizes,
 	if (label)
 		memcpy(sb.label, label, SB_LABEL_SIZE);
 
-	SET_BDEV_CACHE_MODE(&sb, writeback
+	SET_BDEV_CACHE_MODE(&sb, mode);
-			    ? CACHE_MODE_WRITEBACK
-			    : CACHE_MODE_WRITETHROUGH);
 
 	if (data_offset != BDEV_DATA_START_DEFAULT) {
 		sb.version = BCACHE_SB_VERSION_BDEV_WITH_OFFSET;

bcache.h

@@ -61,7 +61,7 @@ uint64_t bch_checksum(unsigned, const void *, size_t);
 uint64_t getblocks(int);
 uint64_t hatoi(const char *);
 unsigned hatoi_validate(const char *, const char *);
-void write_backingdev_sb(int, unsigned, unsigned *,	bool, uint64_t,
+void write_backingdev_sb(int, unsigned, unsigned *, unsigned, uint64_t,
 			 const char *, uuid_le);
 int dev_open(const char *, bool);
 void write_cache_sbs(int *, struct cache_sb *, unsigned, unsigned *, int);

bcacheadm.c

@@ -41,14 +41,16 @@ int bdev = -1;
 int devs = 0;
 char *cache_devices[MAX_DEVS];
 int tier_mapping[MAX_DEVS];
+unsigned replacement_policy_mapping[MAX_DEVS];
 char *backing_devices[MAX_DEVS];
 char *backing_dev_labels[MAX_DEVS];
 size_t i, nr_backing_devices = 0, nr_cache_devices = 0;
 unsigned block_size = 0;
 unsigned bucket_sizes[MAX_DEVS];
 int num_bucket_sizes = 0;
-int writeback = 0, discard = 0, wipe_bcache = 0;
+int writeback = 0, writearound = 0, discard = 0, wipe_bcache = 0;
-unsigned replication_set = 0, replacement_policy = 0;
+unsigned replication_set = 0;
+char *replacement_policy = 0;
 uint64_t data_offset = BDEV_DATA_START_DEFAULT;
 char *label = NULL;
 struct cache_sb *cache_set_sb = NULL;
@@ -117,7 +119,26 @@ static int set_cache(NihOption *option, const char *arg)
 		if(ntier == 0 || ntier == 1)
 			tier_mapping[nr_cache_devices] = ntier;
 		else
-			printf("Invalid tier\n");
+			printf("Invalid tier %s\n", tier);
+	}
+
+	if (!replacement_policy)
+		replacement_policy_mapping[nr_cache_devices] = 0;
+	else {
+		int i = 0;
+
+		while (replacement_policies[i] != NULL) {
+			if (!strcmp(replacement_policy,
+				    replacement_policies[i])) {
+				replacement_policy_mapping[nr_cache_devices] = i;
+				break;
+			}
+			i++;
+		}
+
+		if (replacement_policies[i] == NULL)
+			printf("Invalid replacement policy: %s\n",
+			       replacement_policy);
 	}
 
 	devs++;
@@ -183,6 +204,7 @@ static NihOption make_bcache_options[] = {
 	{0, "wipe-bcache",	N_("destroy existing bcache data if present"),		NULL, NULL, &wipe_bcache, NULL},
 	{0, "discard",		N_("enable discards"),		NULL, NULL, &discard,		NULL},
 	{0, "writeback",	N_("enable writeback"),		NULL, NULL, &writeback, 	NULL},
+	{0, "writearound",	N_("enable writearound"),	NULL, NULL, &writearound, 	NULL},
 
 	NIH_OPTION_LAST
 };
@@ -270,6 +292,8 @@ int make_bcache(NihCommand *command, char *const *args)
 
 	int backing_dev_fd[devs];
 
+	unsigned cache_mode;
+
 	cache_set_sb = calloc(1, sizeof(*cache_set_sb) +
 				     sizeof(struct cache_member) * devs);
 
@@ -322,7 +346,7 @@ int make_bcache(NihCommand *command, char *const *args)
 		next_cache_device(cache_set_sb,
 				  replication_set,
 				  tier_mapping[i],
-				  replacement_policy,
+				  replacement_policy_mapping[i],
 				  discard);
 
 	if (!cache_set_sb->nr_in_set && !nr_backing_devices) {
@@ -359,10 +383,17 @@ int make_bcache(NihCommand *command, char *const *args)
 	write_cache_sbs(cache_dev_fd, cache_set_sb, block_size,
 					bucket_sizes, num_bucket_sizes);
 
+	if (writeback)
+		cache_mode = CACHE_MODE_WRITEBACK;
+	else if (writearound)
+		cache_mode = CACHE_MODE_WRITEAROUND;
+	else
+		cache_mode = CACHE_MODE_WRITETHROUGH;
+
 	for (i = 0; i < nr_backing_devices; i++)
 		write_backingdev_sb(backing_dev_fd[i],
 				    block_size, bucket_sizes,
-				    writeback, data_offset,
+				    cache_mode, data_offset,
 				    backing_dev_labels[i],
 				    cache_set_sb->set_uuid);
 

make-bcache.c

@@ -247,7 +247,10 @@ int main(int argc, char **argv)
 	for (i = 0; i < nr_backing_devices; i++)
 		write_backingdev_sb(backing_dev_fd[i],
 				    block_size, bucket_sizes,
-				    writeback, data_offset,
+				    writeback
+					? CACHE_MODE_WRITEBACK
+					: CACHE_MODE_WRITETHROUGH,
+				    data_offset,
 				    backing_dev_labels[i],
 				    cache_set_sb->set_uuid);