udf: Do not allocate blocks on page writeback

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Now when we allocate blocks on write page fault there should be no block
allocation happening on page writeback. So just ignore the 'create' flag
passed to udf_get_block(). Note that we can spot dirty buffers without
underlying blocks allocated in writeback when we race with expanding
truncate. However in that case these buffers do not contain valid data
so we can safely ignore them and we would just create ourselves problem
when to trim the tail extent.

Signed-off-by: Jan Kara <jack@suse.cz>

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Jan Kara 2023-01-18 15:09:49 +01:00

parent 7010839ccf

commit 36580ed087

1 changed files with 34 additions and 12 deletions

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46

fs/udf/inode.c

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