diff options
| author | Christoph Hellwig <hch@infradead.org> | 2011-06-24 14:29:46 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2011-07-20 20:47:48 -0400 |
| commit | df2d6f26586f12a24f3ae5df4e236dc5c08d6eb4 (patch) | |
| tree | 68c6ec96177f766d3b9ab0a48408271ef2af4d89 /lib/smp_processor_id.c | |
| parent | 562c72aa57c36b178eacc3500a0215651eca9429 (diff) | |
fs: always maintain i_dio_count
Maintain i_dio_count for all filesystems, not just those using DIO_LOCKING.
This these filesystems to also protect truncate against direct I/O requests
by using common code. Right now the only non-DIO_LOCKING filesystem that
appears to do so is XFS, which uses an opencoded variant of the i_dio_count
scheme.
Behaviour doesn't change for filesystems never calling inode_dio_wait.
For ext4 behaviour changes when using the dioread_nonlock option, which
previously was missing any protection between truncate and direct I/O reads.
For ocfs2 that handcrafted i_dio_count manipulations are replaced with
the common code now enable.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'lib/smp_processor_id.c')
0 files changed, 0 insertions, 0 deletions