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[XFS] Disable the combination of XFS direct IO and AIO until the IO completion 

handling for unwritten extents can be moved out of interrupt context.

SGI Modid: xfs-linux:xfs-kern:22343a

Signed-off-by: Nathan Scott <nathans@sgi.com>
Signed-off-by: Christoph Hellwig <hch@sgi.com>
This commit is contained in:
Nathan Scott 2005-05-05 13:30:34 -07:00 committed by Christoph Hellwig
parent abd0cf7aea
commit 3f24376666
2 changed files with 44 additions and 2 deletions
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43
fs/xfs/linux-2.6/xfs_file.c
View File

@ -515,10 +515,49 @@ open_exec_out:
}
#endif /* HAVE_FOP_OPEN_EXEC */
/*
* Temporary workaround to the AIO direct IO write problem.
* This code can go and we can revert to do_sync_write once
* the writepage(s) rework is merged.
*/
STATIC ssize_t
linvfs_write(
struct file *filp,
const char __user *buf,
size_t len,
loff_t *ppos)
{
struct kiocb kiocb;
ssize_t ret;
init_sync_kiocb(&kiocb, filp);
kiocb.ki_pos = *ppos;
ret = __linvfs_write(&kiocb, buf, 0, len, kiocb.ki_pos);
*ppos = kiocb.ki_pos;
return ret;
}
STATIC ssize_t
linvfs_write_invis(
struct file *filp,
const char __user *buf,
size_t len,
loff_t *ppos)
{
struct kiocb kiocb;
ssize_t ret;
init_sync_kiocb(&kiocb, filp);
kiocb.ki_pos = *ppos;
ret = __linvfs_write(&kiocb, buf, IO_INVIS, len, kiocb.ki_pos);
*ppos = kiocb.ki_pos;
return ret;
}
struct file_operations linvfs_file_operations = {
.llseek = generic_file_llseek,
.read = do_sync_read,
.write = do_sync_write,
.write = linvfs_write,
.readv = linvfs_readv,
.writev = linvfs_writev,
.aio_read = linvfs_aio_read,
@ -540,7 +579,7 @@ struct file_operations linvfs_file_operations = {
struct file_operations linvfs_invis_file_operations = {
.llseek = generic_file_llseek,
.read = do_sync_read,
.write = do_sync_write,
.write = linvfs_write_invis,
.readv = linvfs_readv_invis,
.writev = linvfs_writev_invis,
.aio_read = linvfs_aio_read_invis,

3
fs/xfs/linux-2.6/xfs_lrw.c
View File

@ -683,6 +683,9 @@ xfs_write(
(xip->i_d.di_flags & XFS_DIFLAG_REALTIME) ?
mp->m_rtdev_targp : mp->m_ddev_targp;
if (ioflags & IO_ISAIO)
return XFS_ERROR(-ENOSYS);
if ((pos & target->pbr_smask) || (count & target->pbr_smask))
return XFS_ERROR(-EINVAL);