Btrfs: setup a nofs context for memory allocation at btrfs_create_tree()

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We are holding a transaction handle when creating a tree, therefore we can
not allocate the root using GFP_KERNEL, as we could deadlock if reclaim is
triggered by the allocation, therefore setup a nofs context.

Fixes: 74e4d82757 ("btrfs: let callers of btrfs_alloc_root pass gfp flags")
CC: stable@vger.kernel.org # 4.9+
Reviewed-by: Nikolay Borisov <nborisov@suse.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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Filipe Manana 2018-12-13 21:16:45 +00:00 • committed by David Sterba

parent eee9957754

commit b89f6d1fcb

1 changed files with 8 additions and 0 deletions

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fs/btrfs/disk-io.c

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