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ext4: Wait for proper transaction commit on fsync

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(cherry picked from commit b436b9bef8)

We cannot rely on buffer dirty bits during fsync because pdflush can come
before fsync is called and clear dirty bits without forcing a transaction
commit. What we do is that we track which transaction has last changed
the inode and which transaction last changed allocation and force it to
disk on fsync.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Jan Kara 2009-12-08 23:51:10 -05:00 • committed by Greg Kroah-Hartman
commit eebb744d30
7 changed files with 81 additions and 31 deletions
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