minix: Fix data integrity writeout issues

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Minix 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. Furthermore DIRSYNC handling missed writing inode related
metadata.

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/20260727104923.3828017-36-jack@suse.cz
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>

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Jan Kara 2026-07-27 12:49:34 +02:00 • committed by Christian Brauner

parent 0cee81a3fd

commit 84af7c3b34

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4 changed files with 37 additions and 27 deletions

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2

fs/minix/dir.c

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9

fs/minix/file.c

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52

fs/minix/inode.c

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1

fs/minix/minix.h

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