btrfs: make prepare_pages nowait compatible

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Add nowait parameter to the prepare_pages function. In case nowait is
specified for an async buffered write request, do a nowait allocation or
return -EAGAIN.

Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Stefan Roesch <shr@fb.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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Stefan Roesch 2022-09-12 12:27:47 -07:00 • committed by David Sterba

parent 80f9d24130

commit fc22600012

1 changed files with 35 additions and 8 deletions

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fs/btrfs/file.c

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