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
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