fs/btrfs/delayed-ref.c

11 #include "delayed-ref.h"
23  * delayed back reference update tracking.  For subvolume trees
25  * delayed processing.   This avoids deep call chains where we
60  * @nr_refs:  number of delayed refs to drop
63  * Drops the delayed ref head's count from the delayed refs rsv and free any
82  * Adjust the size of the delayed refs rsv.
107 	 * Try to take num_bytes from the transaction's local delayed reserve.  in btrfs_update_delayed_refs_rsv()
109 	 * reserve doesn't have enough reserved space, the delayed refs reserve  in btrfs_update_delayed_refs_rsv()
132  * Adjust the size of the delayed refs block reserve for 1 block group item
151  * Adjust the size of the delayed refs block reserve to release space for 1
167  * Adjust the size of the delayed refs block reserve for 1 block group item
186  * Adjust the size of the delayed refs block reserve to release space for 1
202  * Refill based on our delayed refs usage.
207  * This will refill the delayed block_rsv up to 1 items size worth of space and
269  * compare two delayed data backrefs with same bytenr and type
563 	 * Select a delayed ref of type BTRFS_ADD_DELAYED_REF first.  in btrfs_select_delayed_ref()
660 		 * reallocated before the delayed ref  in update_existing_head_ref()
757 		 * later modification deletes the delayed ref without ever  in init_delayed_ref_head()
830 "delayed ref head %llu is beyond 32bit page cache and xarray index limit",  in add_delayed_ref_head()
884 		 * delayed drop ref (the data extent's ref count drops to 0).  in add_delayed_ref_head()
1089  * Add a delayed tree ref. This does all of the accounting required to make sure
1090  * the delayed ref is eventually processed before this transaction commits.
1101  * add a delayed data ref. it's similar to btrfs_add_delayed_tree_ref.
1299 "block group for delayed ref at %llu was not found while destroying ref head",  in btrfs_destroy_delayed_refs()