btrfs: only invalidate btree inode pages after all ebs are released

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In close_ctree(), we call invalidate_inode_pages2() to invalidate all
pages from btree inode.

But the problem is, it never returns 0, but always -EBUSY.

The problem is that we are still holding all the essential tree root
nodes, thus pages holding those tree blocks can not be invalidated thus
invalidate_inode_pages2() always returns -EBUSY.

This is also against the error cleanup path of open_ctree(), which
properly frees all root pointers before calling invalidate_inode_pages().

So fix the order by delaying invalidate_inode_pages2() until we have
freed all root pointers.

Reviewed-by: Anand Jain <asj@kernel.org>
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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Qu Wenruo 2026-03-31 08:51:56 +10:30 • committed by David Sterba

parent 7ae37b2c94

commit 48aa5c0e2b

1 changed files with 7 additions and 7 deletions

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fs/btrfs/disk-io.c

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