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Tag:V5-dev.4

NOTE: Major update to LRU that should solve many of the unbounded memory

      use issues due to inability to recycle mdcache entries.

Merge Highlights

* Ceph aysnc/non-blocking (dormant feature waiting for ceph changes)

* fsal_fd rework to utilize a locking mechanism that can be held across

  threads

* Global fd closing removed from MDCACHE LRU into its own LRU

* LRU revamp to remove long term references from the LRU

* Clean up use of obj_lock now that it isn't used to protect global fd

* Allow read and write FSAL calls to resume to make it possible to avoid

  calls into the filesystem on callbacks from the filesystem.

* Some other cleanup related to all the above

* COMMIT: fsal_reopen_obj() called with FSAL_O_ANY to try avoid opening

  globalfd

* Fix Failed to carry the correct error code when call ceph_fsal_setattr2()

Signed-off-by: Frank S. Filz <ffilzlnx@mindspring.com>

Contents:

24e45d147 Frank S. Filz V5-dev.4

ebfd06bf9 Frank S. Filz FSAL: Remove old fsal_fd management

2cd524697 Frank S. Filz FSAL: Remove seek method

7b1ff6e00 Frank S. Filz 9P: Check file open mode for locks

9627626d8 Frank S. Filz nfs4_op_write.c - fix annoying typo

83fb4ed15 Frank S. Filz FSAL_MEM: Convert to new fsal_fd handling and new async I/O

f2f6c280a Frank S. Filz FSAL_MEM: Remove non-functional lock_op2

ac7bcdf73 Frank S. Filz MDCACHE: export roots aren't in LRU anymore

8e6637ecb Frank S. Filz MDCACHE: Don't need DQ_SAFE any more

fb7bfe9c6 Frank S. Filz MDCACHE: Strip out old fd management

aa00d4136 Frank S. Filz Use long term references at the protocol layer

7a62f317e Frank S. Filz MDCACHE: Add long term obj handle (ultimately mdcache) references

c0ae4b4dd Frank S. Filz MDCACHE: Clean up refcounting and LRU

8ae1c343b Frank S. Filz FSAL_CEPH: Implement async

a1ba06f18 Frank S. Filz Protocols: Add support for read2 and write2 that ask for resume

d6816609b Frank S. Filz MDCACHE: Add support for async FSAL subcall and supercall

310fee636 Frank S. Filz FSAL_GLUSTER - Convert to new fsal_fd management

5bf71d8ea Frank S. Filz FSAL_LIZARDFS - Convert to new fsal_fd management

9e458e166 Frank S. Filz FSAL_KVSFS: Use new fsal_fd management

31698f39d Frank S. Filz FSAL_GPFS: Use new fsal_fd management

065015da2 Frank S. Filz FSAL_RGW: Don't use old fsal_find_fd just do share stuff

7c2374e78 Frank S. Filz FSAL_CEPH: Use new fsal_fd management

9a8136292 Frank S. Filz FSAL_VFS: Use new fsal_fd management

70443fbe0 Frank S. Filz FSAL: Add global fd LRU to FSAL layer

138cb514c Frank S. Filz Synchonizing I/O and file open/close/reopen without holding rwlock

231a86975 Frank S. Filz Make FSAL_VFS compile first

be0d8cacb Frank S. Filz Add atomic_add_unless and PTHREAD_MUTEX_decrement_XXX_t_and_lock

2fd7359c0 hnkboy Fix Failed to carry the correct error code when call ceph_fsal_setattr2()

c2363dce8 Arnab Tah COMMIT: fsal_reopen_obj() called with FSAL_O_ANY to try avoid opening globalfd