Btrfs: introduce common define for max number of mirrors
Readahead already has a define for the max number of mirrors. Scrub
needs such a define now, the rest of the code will need something
like this soon. Therefore the define was added to ctree.h and removed
from the readahead code.
Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/reada.c b/fs/btrfs/reada.c
index 22db045..dc5d331 100644
--- a/fs/btrfs/reada.c
+++ b/fs/btrfs/reada.c
@@ -54,7 +54,6 @@
* than the 2 started one after another.
*/
-#define MAX_MIRRORS 2
#define MAX_IN_FLIGHT 6
struct reada_extctl {
@@ -71,7 +70,7 @@
struct list_head extctl;
struct kref refcnt;
spinlock_t lock;
- struct reada_zone *zones[MAX_MIRRORS];
+ struct reada_zone *zones[BTRFS_MAX_MIRRORS];
int nzones;
struct btrfs_device *scheduled_for;
};
@@ -84,7 +83,8 @@
spinlock_t lock;
int locked;
struct btrfs_device *device;
- struct btrfs_device *devs[MAX_MIRRORS]; /* full list, incl self */
+ struct btrfs_device *devs[BTRFS_MAX_MIRRORS]; /* full list, incl
+ * self */
int ndevs;
struct kref refcnt;
};
@@ -365,9 +365,9 @@
if (ret || !bbio || length < blocksize)
goto error;
- if (bbio->num_stripes > MAX_MIRRORS) {
+ if (bbio->num_stripes > BTRFS_MAX_MIRRORS) {
printk(KERN_ERR "btrfs readahead: more than %d copies not "
- "supported", MAX_MIRRORS);
+ "supported", BTRFS_MAX_MIRRORS);
goto error;
}