Btrfs: don't keep trying to build clusters if we are fragmented

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If we are extremely fragmented then we won't be able to create a free_cluster.
So if this happens set last_ptr->fragmented so that all future allcations will
give up trying to create a cluster.  When we unpin extents we will unset
->fragmented if we free up a sufficient amount of space in a block group.
Thanks,

Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Chris Mason <clm@fb.com>

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Josef Bacik 2015-10-02 15:25:10 -04:00 • committed by Chris Mason

parent a5e681d9bd

commit c759c4e161

3 changed files with 82 additions and 24 deletions

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3

fs/btrfs/ctree.h

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102

fs/btrfs/extent-tree.c

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1

fs/btrfs/free-space-cache.c

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