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Commit ed25e9b2 authored by Ilya Dryomov's avatar Ilya Dryomov
Browse files

Btrfs: profiles filter 



Select chunks based on a given profile mask.

Signed-off-by: default avatarIlya Dryomov <idryomov@gmail.com>
parent f43ffb60

fs/btrfs/volumes.c

+24 −0
Original line number Diff line number Diff line
@@ -2102,6 +2102,24 @@ static void unset_balance_control(struct btrfs_fs_info *fs_info) 
	kfree(bctl);

}



/*

 * Balance filters.  Return 1 if chunk should be filtered out

 * (should not be balanced).

 */

static int chunk_profiles_filter(u64 chunk_profile,

				 struct btrfs_balance_args *bargs)

{

	chunk_profile &= BTRFS_BLOCK_GROUP_PROFILE_MASK;



	if (chunk_profile == 0)

		chunk_profile = BTRFS_AVAIL_ALLOC_BIT_SINGLE;



	if (bargs->profiles & chunk_profile)

		return 0;



	return 1;

}



static int should_balance_chunk(struct btrfs_root *root,

				struct extent_buffer *leaf,

				struct btrfs_chunk *chunk, u64 chunk_offset)
@@ -2123,6 +2141,12 @@ static int should_balance_chunk(struct btrfs_root *root, 
	else if (chunk_type & BTRFS_BLOCK_GROUP_METADATA)

		bargs = &bctl->meta;



	/* profiles filter */

	if ((bargs->flags & BTRFS_BALANCE_ARGS_PROFILES) &&

	    chunk_profiles_filter(chunk_type, bargs)) {

		return 0;

	}



	return 1;

}

fs/btrfs/volumes.h

+4 −0
Original line number Diff line number Diff line
@@ -196,6 +196,10 @@ struct map_lookup { 
#define BTRFS_BALANCE_TYPE_MASK		(BTRFS_BALANCE_DATA |	    \

					 BTRFS_BALANCE_SYSTEM |	    \

					 BTRFS_BALANCE_METADATA)

/*

 * Balance filters

 */

#define BTRFS_BALANCE_ARGS_PROFILES	(1ULL << 0)



struct btrfs_balance_args;

struct btrfs_balance_control {