fs/fuse/fuse_i.h

3   Copyright (C) 2001-2008  Miklos Szeredi <miklos@szeredi.hu>
23 #include <linux/backing-dev.h>
41 /** Bias for fi->writectr, meaning new writepages must not be sent */
100 	/** The sticky bit in inode->i_mode may have been removed, so
116 			/* Files usable in writepage.  Protected by fi->lock */
241 	/** RB node to be linked on fuse_conn->polled_files */
359  *   - FR_ABORTED
360  *   - FR_LOCKED (may also be modified under fc->lock, tested under both)
393 	/** virtio-fs's physically contiguous buffer for in and out args */
406  * Input queue signalling is device-specific.  For example, the /dev/fuse file
407  * uses fiq->waitq and fasync to wake processes that are waiting on queue
408  * readiness.  These callbacks allow other device types to respond to input
415 	void (*wake_forget_and_unlock)(struct fuse_iqueue *fiq)
416 		__releases(fiq->lock);
421 	void (*wake_interrupt_and_unlock)(struct fuse_iqueue *fiq)
422 		__releases(fiq->lock);
427 	void (*wake_pending_and_unlock)(struct fuse_iqueue *fiq)
428 		__releases(fiq->lock);
433 	void (*release)(struct fuse_iqueue *fiq);
468 	/** Device-specific callbacks */
471 	/** Device-specific state */
493  * Fuse device instance
496 	/** Fuse connection for this device */
502 	/** list entry on fc->devices */
508 	FUSE_DAX_ALWAYS,	/* "-o dax=always" */
509 	FUSE_DAX_NEVER,		/* "-o dax=never" */
510 	FUSE_DAX_INODE_USER,	/* "-o dax=inode" */
540 	/* DAX device, may be NULL */
558  * is destroyed, when the client device is closed and the last
594 	/** Constrain ->max_pages to this value during feature negotiation */
638 	    abort and device release */
664 	/** write-back cache policy (default is write-through) */
740 	/** Do multi-page cached writes */
767 	/** Does the filesystem support asynchronous direct-IO submission? */
797 	/* Auto-mount submounts announced by the server */
830 	/** Device ID from the root super block */
854 	/** List of device instances belonging to this connection */
861 	/* Dax specific conn data, non-NULL if DAX is enabled */
876  * allow submounts with dedicated superblocks and thus separate device
884 	 * Super block for this connection (fc->killsb must be held when
889 	/* Entry on fc->mounts */
896 	return sb->s_fs_info;  in get_fuse_mount_super()
901 	return get_fuse_mount_super(sb)->fc;  in get_fuse_conn_super()
906 	return get_fuse_mount_super(inode->i_sb);  in get_fuse_mount()
911 	return get_fuse_mount_super(inode->i_sb)->fc;  in get_fuse_conn()
921 	return get_fuse_inode(inode)->nodeid;  in get_node_id()
931 	return atomic64_read(&fc->attr_version);  in fuse_get_attr_version()
937 	return inode->i_generation != generation ||  in fuse_stale_inode()
938 		inode_wrong_type(inode, attr->mode);  in fuse_stale_inode()
943 	set_bit(FUSE_I_BAD, &get_fuse_inode(inode)->state);  in fuse_make_bad()
948 	return unlikely(test_bit(FUSE_I_BAD, &get_fuse_inode(inode)->state));  in fuse_is_bad()
970 		descs[i].length = PAGE_SIZE - descs[i].offset;  in fuse_page_descs_length_init()
977 	if (atomic_dec_and_test(&bucket->count))  in fuse_sync_bucket_dec()
978 		wake_up(&bucket->waitq);  in fuse_sync_bucket_dec()
982 /** Device operations */
1006 struct fuse_forget_link *fuse_dequeue_forget(struct fuse_iqueue *fiq,
1097  * Initialize the client device
1102  * Cleanup the client device
1144 	fuse_time_to_jiffies((o)->attr_valid, (o)->attr_valid_nsec)
1173  * @sb: partially-initialized superblock to fill in
1237  * The caller must hold fc->killsb.
1243  * File-system tells the kernel to invalidate cache for the given node id.
1249  * File-system tells the kernel to invalidate parent attributes and
1252  * If the child_nodeid is non-zero and:
1253  *    - matches the inode number for the dentry matching parent/name,
1254  *    - is not a mount point
1255  *    - is a file or oan empty directory
1268 /** If set, it is WRITE; otherwise - READ */
1271 /** CUSE pass fuse_direct_io() a file which f_mapping->host is not from FUSE */
1322 u64 fuse_get_unique(struct fuse_iqueue *fiq);