btrfs: stop using lock_extent in btrfs_buffer_uptodate

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The only other place that locks extents on the btree inode is
read_extent_buffer_subpage while reading in the partial page for a
buffer.  This means locking the extent in btrfs_buffer_uptodate does not
synchronize with anything on non-subpage file systems, and on subpage
file systems it only waits for a parallel read(-ahead) to finish,
which seems to be counter to what the callers actually expect.

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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Christoph Hellwig 2023-05-03 17:24:39 +02:00 • committed by David Sterba

parent f3d315eb93

commit 9e2aff90fc

1 changed files with 2 additions and 10 deletions

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fs/btrfs/disk-io.c

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