Commit 878d7b67 authored by Josef Bacik's avatar Josef Bacik Committed by David Sterba
Browse files

btrfs: migrate the alloc_profile helpers 



These feel more at home in block-group.c.

Signed-off-by: default avatarJosef Bacik <josef@toxicpanda.com>
Reviewed-by: default avatarDavid Sterba <dsterba@suse.com>
[ refresh, adjust btrfs_get_alloc_profile exports ]
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 07730d87

fs/btrfs/block-group.c

+105 −0
Original line number Diff line number Diff line
@@ -15,6 +15,111 @@ 
#include "delalloc-space.h"

#include "math.h"



/*

 * Return target flags in extended format or 0 if restripe for this chunk_type

 * is not in progress

 *

 * Should be called with balance_lock held

 */

u64 btrfs_get_restripe_target(struct btrfs_fs_info *fs_info, u64 flags)

{

	struct btrfs_balance_control *bctl = fs_info->balance_ctl;

	u64 target = 0;



	if (!bctl)

		return 0;



	if (flags & BTRFS_BLOCK_GROUP_DATA &&

	    bctl->data.flags & BTRFS_BALANCE_ARGS_CONVERT) {

		target = BTRFS_BLOCK_GROUP_DATA | bctl->data.target;

	} else if (flags & BTRFS_BLOCK_GROUP_SYSTEM &&

		   bctl->sys.flags & BTRFS_BALANCE_ARGS_CONVERT) {

		target = BTRFS_BLOCK_GROUP_SYSTEM | bctl->sys.target;

	} else if (flags & BTRFS_BLOCK_GROUP_METADATA &&

		   bctl->meta.flags & BTRFS_BALANCE_ARGS_CONVERT) {

		target = BTRFS_BLOCK_GROUP_METADATA | bctl->meta.target;

	}



	return target;

}



/*

 * @flags: available profiles in extended format (see ctree.h)

 *

 * Return reduced profile in chunk format.  If profile changing is in progress

 * (either running or paused) picks the target profile (if it's already

 * available), otherwise falls back to plain reducing.

 */

static u64 btrfs_reduce_alloc_profile(struct btrfs_fs_info *fs_info, u64 flags)

{

	u64 num_devices = fs_info->fs_devices->rw_devices;

	u64 target;

	u64 raid_type;

	u64 allowed = 0;



	/*

	 * See if restripe for this chunk_type is in progress, if so try to

	 * reduce to the target profile

	 */

	spin_lock(&fs_info->balance_lock);

	target = btrfs_get_restripe_target(fs_info, flags);

	if (target) {

		/* Pick target profile only if it's already available */

		if ((flags & target) & BTRFS_EXTENDED_PROFILE_MASK) {

			spin_unlock(&fs_info->balance_lock);

			return extended_to_chunk(target);

		}

	}

	spin_unlock(&fs_info->balance_lock);



	/* First, mask out the RAID levels which aren't possible */

	for (raid_type = 0; raid_type < BTRFS_NR_RAID_TYPES; raid_type++) {

		if (num_devices >= btrfs_raid_array[raid_type].devs_min)

			allowed |= btrfs_raid_array[raid_type].bg_flag;

	}

	allowed &= flags;



	if (allowed & BTRFS_BLOCK_GROUP_RAID6)

		allowed = BTRFS_BLOCK_GROUP_RAID6;

	else if (allowed & BTRFS_BLOCK_GROUP_RAID5)

		allowed = BTRFS_BLOCK_GROUP_RAID5;

	else if (allowed & BTRFS_BLOCK_GROUP_RAID10)

		allowed = BTRFS_BLOCK_GROUP_RAID10;

	else if (allowed & BTRFS_BLOCK_GROUP_RAID1)

		allowed = BTRFS_BLOCK_GROUP_RAID1;

	else if (allowed & BTRFS_BLOCK_GROUP_RAID0)

		allowed = BTRFS_BLOCK_GROUP_RAID0;



	flags &= ~BTRFS_BLOCK_GROUP_PROFILE_MASK;



	return extended_to_chunk(flags | allowed);

}



static u64 get_alloc_profile(struct btrfs_fs_info *fs_info, u64 orig_flags)

{

	unsigned seq;

	u64 flags;



	do {

		flags = orig_flags;

		seq = read_seqbegin(&fs_info->profiles_lock);



		if (flags & BTRFS_BLOCK_GROUP_DATA)

			flags |= fs_info->avail_data_alloc_bits;

		else if (flags & BTRFS_BLOCK_GROUP_SYSTEM)

			flags |= fs_info->avail_system_alloc_bits;

		else if (flags & BTRFS_BLOCK_GROUP_METADATA)

			flags |= fs_info->avail_metadata_alloc_bits;

	} while (read_seqretry(&fs_info->profiles_lock, seq));



	return btrfs_reduce_alloc_profile(fs_info, flags);

}



u64 btrfs_get_alloc_profile(struct btrfs_fs_info *fs_info, u64 orig_flags)

{

	return get_alloc_profile(fs_info, orig_flags);

}



void btrfs_get_block_group(struct btrfs_block_group_cache *cache)

{

	atomic_inc(&cache->count);

fs/btrfs/block-group.h

+16 −0
Original line number Diff line number Diff line
@@ -219,6 +219,22 @@ int btrfs_chunk_alloc(struct btrfs_trans_handle *trans, u64 flags, 
		      enum btrfs_chunk_alloc_enum force);

int btrfs_force_chunk_alloc(struct btrfs_trans_handle *trans, u64 type);

void check_system_chunk(struct btrfs_trans_handle *trans, const u64 type);

u64 btrfs_get_alloc_profile(struct btrfs_fs_info *fs_info, u64 orig_flags);



static inline u64 btrfs_data_alloc_profile(struct btrfs_fs_info *fs_info)

{

	return btrfs_get_alloc_profile(fs_info, BTRFS_BLOCK_GROUP_DATA);

}



static inline u64 btrfs_metadata_alloc_profile(struct btrfs_fs_info *fs_info)

{

	return btrfs_get_alloc_profile(fs_info, BTRFS_BLOCK_GROUP_METADATA);

}



static inline u64 btrfs_system_alloc_profile(struct btrfs_fs_info *fs_info)

{

	return btrfs_get_alloc_profile(fs_info, BTRFS_BLOCK_GROUP_SYSTEM);

}



static inline int btrfs_block_group_cache_done(

		struct btrfs_block_group_cache *cache)

fs/btrfs/ctree.h

+0 −4
Original line number Diff line number Diff line
@@ -2527,10 +2527,6 @@ int btrfs_extent_readonly(struct btrfs_fs_info *fs_info, u64 bytenr); 
int btrfs_free_block_groups(struct btrfs_fs_info *info);

void btrfs_get_block_group_trimming(struct btrfs_block_group_cache *cache);

void btrfs_put_block_group_trimming(struct btrfs_block_group_cache *cache);

u64 btrfs_data_alloc_profile(struct btrfs_fs_info *fs_info);

u64 btrfs_metadata_alloc_profile(struct btrfs_fs_info *fs_info);

u64 btrfs_system_alloc_profile(struct btrfs_fs_info *fs_info);

u64 btrfs_get_alloc_profile(struct btrfs_fs_info *fs_info, u64 orig_flags);

void btrfs_clear_space_info_full(struct btrfs_fs_info *info);



enum btrfs_reserve_flush_enum {

fs/btrfs/extent-tree.c

+1 −121
Original line number Diff line number Diff line
@@ -2524,111 +2524,6 @@ int btrfs_extent_readonly(struct btrfs_fs_info *fs_info, u64 bytenr) 
	return readonly;

}



/*

 * returns target flags in extended format or 0 if restripe for this

 * chunk_type is not in progress

 *

 * should be called with balance_lock held

 */

u64 btrfs_get_restripe_target(struct btrfs_fs_info *fs_info, u64 flags)

{

	struct btrfs_balance_control *bctl = fs_info->balance_ctl;

	u64 target = 0;



	if (!bctl)

		return 0;



	if (flags & BTRFS_BLOCK_GROUP_DATA &&

	    bctl->data.flags & BTRFS_BALANCE_ARGS_CONVERT) {

		target = BTRFS_BLOCK_GROUP_DATA | bctl->data.target;

	} else if (flags & BTRFS_BLOCK_GROUP_SYSTEM &&

		   bctl->sys.flags & BTRFS_BALANCE_ARGS_CONVERT) {

		target = BTRFS_BLOCK_GROUP_SYSTEM | bctl->sys.target;

	} else if (flags & BTRFS_BLOCK_GROUP_METADATA &&

		   bctl->meta.flags & BTRFS_BALANCE_ARGS_CONVERT) {

		target = BTRFS_BLOCK_GROUP_METADATA | bctl->meta.target;

	}



	return target;

}



/*

 * @flags: available profiles in extended format (see ctree.h)

 *

 * Returns reduced profile in chunk format.  If profile changing is in

 * progress (either running or paused) picks the target profile (if it's

 * already available), otherwise falls back to plain reducing.

 */

static u64 btrfs_reduce_alloc_profile(struct btrfs_fs_info *fs_info, u64 flags)

{

	u64 num_devices = fs_info->fs_devices->rw_devices;

	u64 target;

	u64 raid_type;

	u64 allowed = 0;



	/*

	 * see if restripe for this chunk_type is in progress, if so

	 * try to reduce to the target profile

	 */

	spin_lock(&fs_info->balance_lock);

	target = btrfs_get_restripe_target(fs_info, flags);

	if (target) {

		/* pick target profile only if it's already available */

		if ((flags & target) & BTRFS_EXTENDED_PROFILE_MASK) {

			spin_unlock(&fs_info->balance_lock);

			return extended_to_chunk(target);

		}

	}

	spin_unlock(&fs_info->balance_lock);



	/* First, mask out the RAID levels which aren't possible */

	for (raid_type = 0; raid_type < BTRFS_NR_RAID_TYPES; raid_type++) {

		if (num_devices >= btrfs_raid_array[raid_type].devs_min)

			allowed |= btrfs_raid_array[raid_type].bg_flag;

	}

	allowed &= flags;



	if (allowed & BTRFS_BLOCK_GROUP_RAID6)

		allowed = BTRFS_BLOCK_GROUP_RAID6;

	else if (allowed & BTRFS_BLOCK_GROUP_RAID5)

		allowed = BTRFS_BLOCK_GROUP_RAID5;

	else if (allowed & BTRFS_BLOCK_GROUP_RAID10)

		allowed = BTRFS_BLOCK_GROUP_RAID10;

	else if (allowed & BTRFS_BLOCK_GROUP_RAID1)

		allowed = BTRFS_BLOCK_GROUP_RAID1;

	else if (allowed & BTRFS_BLOCK_GROUP_RAID0)

		allowed = BTRFS_BLOCK_GROUP_RAID0;



	flags &= ~BTRFS_BLOCK_GROUP_PROFILE_MASK;



	return extended_to_chunk(flags | allowed);

}



static u64 get_alloc_profile(struct btrfs_fs_info *fs_info, u64 orig_flags)

{

	unsigned seq;

	u64 flags;



	do {

		flags = orig_flags;

		seq = read_seqbegin(&fs_info->profiles_lock);



		if (flags & BTRFS_BLOCK_GROUP_DATA)

			flags |= fs_info->avail_data_alloc_bits;

		else if (flags & BTRFS_BLOCK_GROUP_SYSTEM)

			flags |= fs_info->avail_system_alloc_bits;

		else if (flags & BTRFS_BLOCK_GROUP_METADATA)

			flags |= fs_info->avail_metadata_alloc_bits;

	} while (read_seqretry(&fs_info->profiles_lock, seq));



	return btrfs_reduce_alloc_profile(fs_info, flags);

}



u64 btrfs_get_alloc_profile(struct btrfs_fs_info *fs_info, u64 orig_flags)

{

	return get_alloc_profile(fs_info, orig_flags);

}



static u64 get_alloc_profile_by_root(struct btrfs_root *root, int data)

{

	struct btrfs_fs_info *fs_info = root->fs_info;
@@ -2642,25 +2537,10 @@ static u64 get_alloc_profile_by_root(struct btrfs_root *root, int data) 
	else

		flags = BTRFS_BLOCK_GROUP_METADATA;



	ret = get_alloc_profile(fs_info, flags);

	ret = btrfs_get_alloc_profile(fs_info, flags);

	return ret;

}



u64 btrfs_data_alloc_profile(struct btrfs_fs_info *fs_info)

{

	return get_alloc_profile(fs_info, BTRFS_BLOCK_GROUP_DATA);

}



u64 btrfs_metadata_alloc_profile(struct btrfs_fs_info *fs_info)

{

	return get_alloc_profile(fs_info, BTRFS_BLOCK_GROUP_METADATA);

}



u64 btrfs_system_alloc_profile(struct btrfs_fs_info *fs_info)

{

	return get_alloc_profile(fs_info, BTRFS_BLOCK_GROUP_SYSTEM);

}



static u64 first_logical_byte(struct btrfs_fs_info *fs_info, u64 search_start)

{

	struct btrfs_block_group_cache *cache;

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