BMC/Intel-BMC/linux.git/fs/fuse/fuse_i.h, branch dev

fuse: separate pqueue for clones

2015-07-01T14:26:09+00:00

Make each fuse device clone refer to a separate processing queue. The only constraint on userspace code is that the request answer must be written to the same device clone as it was read off. Signed-off-by: Miklos Szeredi

fuse: introduce per-instance fuse_dev structure

2015-07-01T14:26:08+00:00

Allow fuse device clones to refer to be distinguished. This patch just adds the infrastructure by associating a separate "struct fuse_dev" with each clone. Signed-off-by: Miklos Szeredi Reviewed-by: Ashish Samant

fuse: add req flag for private list

2015-07-01T14:26:06+00:00

When an unlocked request is aborted, it is moved from fpq->io to a private list. Then, after unlocking fpq->lock, the private list is processed and the requests are finished off. To protect the private list, we need to mark the request with a flag, so if in the meantime the request is unlocked the list is not corrupted. Signed-off-by: Miklos Szeredi Reviewed-by: Ashish Samant

fuse: pqueue locking

2015-07-01T14:26:06+00:00

Add a fpq->lock for protecting members of struct fuse_pqueue and FR_LOCKED request flag. Signed-off-by: Miklos Szeredi Reviewed-by: Ashish Samant

fuse: duplicate ->connected in pqueue

2015-07-01T14:26:04+00:00

This will allow checking ->connected just with the processing queue lock. Signed-off-by: Miklos Szeredi Reviewed-by: Ashish Samant

fuse: separate out processing queue

2015-07-01T14:26:04+00:00

This is just two fields: fc->io and fc->processing. This patch just rearranges the fields, no functional change. Signed-off-by: Miklos Szeredi Reviewed-by: Ashish Samant

fuse: duplicate ->connected in iqueue

2015-07-01T14:26:01+00:00

This will allow checking ->connected just with the input queue lock. Signed-off-by: Miklos Szeredi Reviewed-by: Ashish Samant

fuse: separate out input queue

2015-07-01T14:26:01+00:00

The input queue contains normal requests (fc->pending), forgets (fc->forget_*) and interrupts (fc->interrupts). There's also fc->waitq and fc->fasync for waking up the readers of the fuse device when a request is available. The fc->reqctr is also moved to the input queue (assigned to the request when the request is added to the input queue. This patch just rearranges the fields, no functional change. Signed-off-by: Miklos Szeredi Reviewed-by: Ashish Samant

fuse: req state use flags

2015-07-01T14:26:01+00:00

Use flags for representing the state in fuse_req. This is needed since req->list will be protected by different locks in different states, hence we'll want the state itself to be split into distinct bits, each protected with the relevant lock in that state. Signed-off-by: Miklos Szeredi

fuse: simplify req states

2015-07-01T14:26:00+00:00

FUSE_REQ_INIT is actually the same state as FUSE_REQ_PENDING and FUSE_REQ_READING and FUSE_REQ_WRITING can be merged into a common FUSE_REQ_IO state. Signed-off-by: Miklos Szeredi Reviewed-by: Ashish Samant