fs/nfsd/filecache.c

7  * An nfsd_file object is a per-file collection of open state that binds
15  * nfsd_file objects are reference-counted. Consumers acquire a new
18  * nfsd_file_get and nfsd_file_put. There are two varieties of nfsd_file
23  *    collected nfsd_file. The final nfsd_file_put releases the open
27  *    of open state, it acquires a garbage-collected nfsd_file. The
98 	.key_len		= sizeof_field(struct nfsd_file, nf_inode),
99 	.key_offset		= offsetof(struct nfsd_file, nf_inode),
100 	.head_offset		= offsetof(struct nfsd_file, nf_rlist),
121 	struct nfsd_file *nf = container_of(rcu, struct nfsd_file, nf_rcu);
154 nfsd_file_mark_find_or_create(struct nfsd_file *nf, struct inode *inode)
208 static struct nfsd_file *
212 	struct nfsd_file *nf;
235  * @nf: nfsd_file to check for writeback errors
237  * Check whether a nfsd_file has an unseen error. Reset the write
241 nfsd_file_check_write_error(struct nfsd_file *nf)
251 nfsd_file_hash_remove(struct nfsd_file *nf)
259 nfsd_file_unhash(struct nfsd_file *nf)
269 nfsd_file_free(struct nfsd_file *nf)
297 nfsd_file_check_writeback(struct nfsd_file *nf)
319 static bool nfsd_file_lru_add(struct nfsd_file *nf)
329 static bool nfsd_file_lru_remove(struct nfsd_file *nf)
338 struct nfsd_file *
339 nfsd_file_get(struct nfsd_file *nf)
347  * nfsd_file_put - put the reference to a nfsd_file
348  * @nf: nfsd_file of which to put the reference
350  * Put a reference to a nfsd_file. In the non-GC case, we just put the
355 nfsd_file_put(struct nfsd_file *nf)
393 	struct nfsd_file *nf;
396 		nf = list_first_entry(dispose, struct nfsd_file, nf_lru);
413 		struct nfsd_file *nf = list_first_entry(dispose,
414 						struct nfsd_file, nf_lru);
474 	struct nfsd_file *nf = list_entry(item, struct nfsd_file, nf_lru);
554  * nfsd_file_cond_queue - conditionally unhash and queue a nfsd_file
555  * @nf: nfsd_file to attempt to queue
558  * Unhash an nfsd_file, try to get a reference to it, and then put that
562 nfsd_file_cond_queue(struct nfsd_file *nf, struct list_head *dispose)
591  * An nfsd_file represents a struct file being held open on behalf of nfsd.
599  * refcounts go to zero. The actual free of an nfsd_file can be expensive,
606 	struct nfsd_file *nf;
620  * nfsd_file_close_inode - attempt a delayed close of a nfsd_file
638  * nfsd_file_close_inode_sync - attempt to forcibly close a nfsd_file
650 	struct nfsd_file *nf;
657 		nf = list_first_entry(&dispose, struct nfsd_file, nf_lru);
725 	nfsd_file_slab = KMEM_CACHE(nfsd_file, 0);
794  * Walk the nfsd_file cache and close out any that match @net. If @net is NULL,
802 	struct nfsd_file *nf;
918 static struct nfsd_file *
924 	struct nfsd_file *nf;
962 	struct nfsd_file *nf;
982 		     struct nfsd_file **pnf, bool want_gc)
986 	struct nfsd_file *new, *nf;
1121  * nfsd_file_acquire_gc - Get a struct nfsd_file with an open file
1125  * @pnf: OUT: new or found "struct nfsd_file" object
1127  * The nfsd_file object returned by this API is reference-counted
1133  *   %nfs_ok - @pnf points to an nfsd_file with its reference
1140 		     unsigned int may_flags, struct nfsd_file **pnf)
1146  * nfsd_file_acquire - Get a struct nfsd_file with an open file
1150  * @pnf: OUT: new or found "struct nfsd_file" object
1157  *   %nfs_ok - @pnf points to an nfsd_file with its reference
1164 		  unsigned int may_flags, struct nfsd_file **pnf)
1170  * nfsd_file_acquire_opened - Get a struct nfsd_file using existing open file
1175  * @pnf: OUT: new or found "struct nfsd_file" object
1177  * Acquire a nfsd_file object that is not GC'ed. If one doesn't already exist,
1178  * and @file is non-NULL, use it to instantiate a new nfsd_file instead of
1182  *   %nfs_ok - @pnf points to an nfsd_file with its reference
1190 			 struct nfsd_file **pnf)