btrfs: remove the start argument from btrfs_free_reserved_data_space_noquota()

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The start argument for btrfs_free_reserved_data_space_noquota() is only
used to make sure the amount of bytes we decrement from the bytes_may_use
counter of the data space_info object is aligned to the filesystem's
sector size. It serves no other purpose.

All its current callers always pass a length argument that is already
aligned to the sector size, so we can make the start argument go away.
In fact its presence makes it impossible to use it in a context where we
just want to free a number of bytes for a range for which either we do
not know its start offset or for freeing multiple ranges at once (which
are not contiguous).

This change is preparatory work for a patch (third patch in this series)
that makes relocation of data block groups that are not full reserve less
data space.

Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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This commit is contained in:

Filipe Manana 2020-06-09 11:19:33 +01:00 • committed by David Sterba

parent ab48300921

commit 46d4dac888

3 changed files with 7 additions and 11 deletions

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11

fs/btrfs/delalloc-space.c

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2

fs/btrfs/delalloc-space.h

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5

fs/btrfs/inode.c

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