btrfs: don't use ctl->free_space for max_extent_size

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max_extent_size is supposed to be the largest contiguous range for the
space info, and ctl->free_space is the total free space in the block
group.  We need to keep track of these separately and _only_ use the
max_free_space if we don't have a max_extent_size, as that means our
original request was too large to search any of the block groups for and
therefore wouldn't have a max_extent_size set.

CC: stable@vger.kernel.org # 4.14+
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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Josef Bacik 2018-10-11 15:54:09 -04:00 • committed by David Sterba

parent ad22cf6ea4

commit fb5c39d7a8

1 changed files with 5 additions and 2 deletions

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fs/btrfs/extent-tree.c

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