btrfs: factor out nocow ordered extent and extent map generation into a helper

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Currently we're doing all the ordered extent and extent map generation
inside a while() loop of run_delalloc_nocow().  This makes it pretty
hard to read, nor doing proper error handling.

So move that part of code into a helper, nocow_one_range().

This should not change anything, but there is a tiny timing change where
btrfs_dec_nocow_writers() is only called after nocow_one_range() helper
exits.

This timing change is small, and makes error handling easier, thus
should be fine.

Reviewed-by: Boris Burkov <boris@bur.io>
Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

...

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Qu Wenruo 2025-01-13 13:53:41 +10:30 • committed by David Sterba

parent ecde48a1a6

commit 10326fdcb3

1 changed files with 61 additions and 61 deletions

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fs/btrfs/inode.c

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