udf: Fix data integrity writeout issues

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UDF could fail to properly write out inode on fsync(2) due to races
with WB_SYNC_NONE writeback. Several racing fsyncs could also result in
some fsync returning earlier than all metadata buffers were properly
persisted.

Fix all these issues by using new .sync_inode_metadata method which
makes sure all inode related metadata is written to disk during any
WB_SYNC_ALL writeback.

Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://patch.msgid.link/20260727104923.3828017-30-jack@suse.cz
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>

...

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Jan Kara 2026-07-27 12:49:28 +02:00 • committed by Christian Brauner

parent 917e583992

commit 1ec98214cc

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5 changed files with 33 additions and 21 deletions

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2

fs/udf/dir.c

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9

fs/udf/file.c

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40

fs/udf/inode.c

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1

fs/udf/super.c

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2

fs/udf/udfdecl.h

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