BLK_FREE_TAGS(9) Block Devices BLK_FREE_TAGS(9)NAME
blk_free_tags - release a given set of tag maintenance info
void blk_free_tags(struct blk_queue_tag * bqt);
the tag map to free
For externally managed bqt frees the map. Callers of this function must guarantee to have released all the queues that might have been
using this tag map.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 BLK_FREE_TAGS(9)
Check Out this Related Man Page
M_TAG(9) BSD Kernel Developer's Manual M_TAG(9)NAME
m_tag, m_tag_get, m_tag_free, m_tag_prepend, m_tag_unlink, m_tag_delete, m_tag_delete_chain, m_tag_delete_nonpersistent, m_tag_find,
m_tag_copy, m_tag_copy_chain, m_tag_init, m_tag_first, m_tag_next -- mbuf tagging interfaces
struct m_tag *
m_tag_get(int type, int len, int wait);
m_tag_free(struct m_tag *t);
m_tag_prepend(struct mbuf *m, struct m_tag *t);
m_tag_unlink(struct mbuf *m, struct m_tag *t);
m_tag_delete(struct mbuf *m, struct m_tag *t);
m_tag_delete_chain(struct mbuf *m, struct m_tag *t);
m_tag_delete_nonpersistent(struct mbuf *);
struct m_tag *
m_tag_find(struct mbuf *m, int type, struct m_tag *t);
struct m_tag *
m_tag_copy(struct m_tag *m);
m_tag_copy_chain(struct mbuf *to, struct mbuf *from);
m_tag_init(struct mbuf *m);
struct m_tag *
m_tag_first(struct mbuf *m);
struct m_tag *
m_tag_next(struct mbuf *m, struct m_tag *t);
The m_tag interface is used to ``tag'' mbufs.
m_tag_get(type, len, wait)
Allocate an mbuf tag. type is one of the PACKET_TAG_ macros. len is the size of the data associated with the tag, in bytes. wait
is either M_WAITOK or M_NOWAIT.
Free the mbuf tag t.
Prepend the mbuf tag t to the mbuf m. t will become the first tag of the mbuf m. When m is freed, t will also be freed.
Unlink the mbuf tag t from the mbuf m.
The same as m_tag_unlink() followed by m_tag_free().
Unlink and free mbuf tags beginning with the mbuf tag t from the mbuf m. If t is NULL, m_tag_delete_chain() unlinks and frees all
mbuf tags associated with the mbuf m.
Unlink and free all non persistent tags associated with the mbuf m.
m_tag_find(m, type, t)
Find an mbuf tag with type type after the mbuf tag t in the tag chain associated with the mbuf m. If t is NULL, search from the
first mbuf tag. If an mbuf tag is found, return a pointer to it. Otherwise return NULL.
Copy an mbuf tag t. Return a new mbuf tag on success. Otherwise return NULL.
Copy all mbuf tags associated with the mbuf from to the mbuf to. If to already has any mbuf tags, they will be unlinked and freed
beforehand. Return 1 on success. Otherwise return 0.
Initialize mbuf tag chain of the mbuf m.
Return the first mbuf tag associated with the mbuf m. Return NULL if no mbuf tags are found.
Return the next mbuf tag after t associated with the mbuf m. Return NULL if t is the last tag in the chain.
The mbuf tagging interfaces are implemented within the file sys/kern/uipc_mbuf2.c.
The PACKET_TAG_ macros are defined in the file sys/sys/mbuf.h.
SEE ALSO intro(9), malloc(9), mbuf(9)BUGS
The semantics of the term "persistent tag" are vague.
BSD September 7, 2004 BSD
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