On 03/04/2016 11:53 AM, Shaun Tancheff wrote:
What do you think of falling back to i_ino for applications which don't
make use of setting stream_id yet?
Something like this (or using a crc16 instead of the xor hack)?
static inline unsigned int inode_streamid(struct inode *inode)
{
if (inode) {
if (inode->i_streamid)
return inode->i_streamid;
return ((inode->i_ino >> 16) ^ inode->i_ino) & 0xFFFF;
}
return 0;
}
If the device supports a high enough number of concurrently open
streams, that might work fine. But if the mask ends up being 0x7, then I
think it'll just introduce randomness into the whole thing.
But it's something that could be experimented with, certainly.
--
Jens Axboe
--
To unsubscribe from this list: send the line "unsubscribe linux-block" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
