btrfs: count super block write errors in device instead of tracking folio error state

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Currently the error status of super block write is tracked in page/folio
status bit Error. For that we need to keep the reference for the whole
duration of write and wait.

Count the number of superblock writeback errors in the btrfs_device.
That means we don't need the folio to stay around until it's waited for,
and can avoid the extra call to folio_get/put.

Also remove a mention of PageError in a comment as it's the last mention
of the page Error state.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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This commit is contained in:

Matthew Wilcox (Oracle) 2024-04-20 03:49:59 +01:00 • committed by David Sterba

parent 617fb10ea8

commit bc00965dbf

3 changed files with 29 additions and 28 deletions

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46

fs/btrfs/disk-io.c

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2

fs/btrfs/extent_io.c

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9

fs/btrfs/volumes.h

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