Select chunks based on a given profile mask.
Signed-off-by: Ilya Dryomov <idryo...@gmail.com>
---
fs/btrfs/volumes.c | 20 ++++++++++++++++++++
fs/btrfs/volumes.h | 5 +++++
2 files changed, 25 insertions(+), 0 deletions(-)
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index ff252ef..f045615 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -2179,6 +2179,20 @@ static void unset_restripe_control(struct btrfs_fs_info
*fs_info)
* Restripe filters. Return 1 if chunk should be 'filtered out',
* ie should not be restriped.
*/
+static int chunk_profiles_filter(u64 chunk_profile,
+ struct btrfs_restripe_args *rargs)
+{
+ chunk_profile &= BTRFS_BLOCK_GROUP_PROFILE_MASK;
+
+ if (chunk_profile == 0)
+ chunk_profile = BTRFS_AVAIL_ALLOC_BIT_SINGLE;
+
+ if (rargs->profiles & chunk_profile)
+ return 0;
+
+ return 1;
+}
+
static int chunk_soft_convert_filter(u64 chunk_profile,
struct btrfs_restripe_args *rargs)
{
@@ -2216,6 +2230,12 @@ static int should_restripe_chunk(struct btrfs_root *root,
else if (chunk_type & BTRFS_BLOCK_GROUP_METADATA)
rargs = &rctl->meta;
+ /* profiles filter */
+ if ((rargs->flags & BTRFS_RESTRIPE_ARGS_PROFILES) &&
+ chunk_profiles_filter(chunk_type, rargs)) {
+ return 0;
+ }
+
/* soft profile changing mode */
if ((rargs->flags & BTRFS_RESTRIPE_ARGS_SOFT) &&
chunk_soft_convert_filter(chunk_type, rargs)) {
diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h
index 1852f69..9f96ad8 100644
--- a/fs/btrfs/volumes.h
+++ b/fs/btrfs/volumes.h
@@ -183,6 +183,11 @@ struct map_lookup {
#define BTRFS_RESTRIPE_FORCE (1ULL << 3)
/*
+ * Restripe filters
+ */
+#define BTRFS_RESTRIPE_ARGS_PROFILES (1ULL << 0)
+
+/*
* Profile changing flags. When SOFT is set we won't relocate chunk if
* it already has the target profile (even though it may be
* half-filled).
--
1.7.5.4
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