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| author | Stefan Behrens <sbehrens@giantdisaster.de> | 2012-03-27 14:21:26 -0400 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2012-03-27 14:21:26 -0400 |
| commit | 94598ba8d8ff066115508fb99e593d2de1ca67e1 (patch) | |
| tree | 035dcae1b60f84b5620ab1a9d42b5d1fad4b4862 | |
| parent | ea466794084f55d8fcc100711cf17923bf57e962 (diff) | |
| download | linux-3.10-94598ba8d8ff066115508fb99e593d2de1ca67e1.tar.gz linux-3.10-94598ba8d8ff066115508fb99e593d2de1ca67e1.tar.bz2 linux-3.10-94598ba8d8ff066115508fb99e593d2de1ca67e1.zip | |
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>
| -rw-r--r-- | fs/btrfs/ctree.h | 2 | ||||
| -rw-r--r-- | fs/btrfs/reada.c | 10 |
2 files changed, 7 insertions, 5 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index c2e17cd299b..f7da8a8d13c 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -48,6 +48,8 @@ struct btrfs_ordered_sum; #define BTRFS_MAGIC "_BHRfS_M" +#define BTRFS_MAX_MIRRORS 2 + #define BTRFS_MAX_LEVEL 8 #define BTRFS_COMPAT_EXTENT_TREE_V0 diff --git a/fs/btrfs/reada.c b/fs/btrfs/reada.c index 22db04550f6..dc5d33146fd 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 reada_extent { 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 @@ struct reada_zone { 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 @@ again: 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; } |