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| author | Christoph Hellwig <hch@infradead.org> | 2011-06-24 20:29:46 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2011-07-21 02:47:48 +0200 |
| commit | df2d6f26586f12a24f3ae5df4e236dc5c08d6eb4 (patch) | |
| tree | 68c6ec96177f766d3b9ab0a48408271ef2af4d89 /mm | |
| parent | fs: move inode_dio_wait calls into ->setattr (diff) | |
| download | linux-df2d6f26586f12a24f3ae5df4e236dc5c08d6eb4.tar.xz linux-df2d6f26586f12a24f3ae5df4e236dc5c08d6eb4.zip | |
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 'mm')
0 files changed, 0 insertions, 0 deletions