xdr_partial_copy_from_skb – copy data out of an skb Synopsis ssize_t xdr_partial_copy_from_skb(struct xdr_buf * xdr, unsigned int base, struct xdr_skb_reader * desc, xdr_skb_read_actor copy_actor); Arguments xdr target XDR buffer base starting offset desc sk_buff copy helper copy_actor virtual method for copying data Copyright
xdr_inline_decode – Retrieve XDR data to decode Synopsis __be32 * xdr_inline_decode(struct xdr_stream * xdr, size_t nbytes); Arguments xdr pointer to xdr_stream struct nbytes number of bytes of data to decode Description Check if the input buffer is long enough to enable us to decode ‘nbytes’ more bytes of data starting at the current position. If so return the…
xdr_init_encode – Initialize a struct xdr_stream for sending data. Synopsis void xdr_init_encode(struct xdr_stream *xdr, struct xdr_buf *buf, __be32 *p); Arguments xdr pointer to xdr_stream struct buf pointer to XDR buffer in which to encode data p current pointer inside XDR buffer Note at the moment the RPC client only passes the length of our scratch…
xdr_init_decode_pages – Initialize an xdr_stream for decoding data. Synopsis void xdr_init_decode_pages(struct xdr_stream *xdr, struct xdr_buf *buf, struct page **pages, unsigned int len); Arguments xdr pointer to xdr_stream struct buf pointer to XDR buffer from which to decode data pages list of pages to decode into len length in bytes of buffer in pages Copyright
xdr_init_decode – Initialize an xdr_stream for decoding data. Synopsis void xdr_init_decode(struct xdr_stream *xdr, struct xdr_buf *buf, __be32 *p); Arguments xdr pointer to xdr_stream struct buf pointer to XDR buffer from which to decode data p current pointer inside XDR buffer Copyright
xdr_enter_page – decode data from the XDR page Synopsis void xdr_enter_page(struct xdr_stream *xdr, unsigned int len); Arguments xdr pointer to xdr_stream struct len number of bytes of page data Description Moves data beyond the current pointer position from the XDR head[] buffer into the page list. Any data that lies beyond current position + “len”…
xdr_encode_opaque_fixed – Encode fixed length opaque data Synopsis __be32 * xdr_encode_opaque_fixed(__be32 * p, const void * ptr, unsigned int nbytes); Arguments p pointer to current position in XDR buffer. ptr pointer to data to encode (or NULL) nbytes size of data. Description Copy the array of data of length nbytes at ptr to the XDR buffer at position p, then…
xdr_encode_opaque – Encode variable length opaque data Synopsis __be32 * xdr_encode_opaque(__be32 * p, const void * ptr, unsigned int nbytes); Arguments p pointer to current position in XDR buffer. ptr pointer to data to encode (or NULL) nbytes size of data. Description Returns the updated current XDR buffer position Copyright
xdr_commit_encode – Ensure all data is written to buffer Synopsis void xdr_commit_encode(struct xdr_stream *xdr); Arguments xdr pointer to xdr_stream Description We handle encoding across page boundaries by giving the caller a temporary location to write to, then later copying the data into place; xdr_commit_encode does that copying. Normally the caller doesn’t need to call this…
xdr_buf_trim – lop at most “len” bytes off the end of “buf” Synopsis void xdr_buf_trim(struct xdr_buf *buf, unsigned int len); Arguments buf buf to be trimmed len number of bytes to reduce “buf” by Description Trim an xdr_buf by the given number of bytes by fixing up the lengths. Note that it’s possible that we’ll…
xdr_buf_subsegment – set subbuf to a portion of buf Synopsis int xdr_buf_subsegment(struct xdr_buf *buf, struct xdr_buf *subbuf, unsigned int base, unsigned int len); Arguments buf an xdr buffer subbuf the result buffer base beginning of range in bytes len length of range in bytes Description sets subbuf to an xdr buffer representing the portion of…
ww_mutex_unlock – release the w/w mutex Synopsis void __sched ww_mutex_unlock(struct ww_mutex *lock); Arguments lock the mutex to be released Description Unlock a mutex that has been locked by this task previously with any of the ww_mutex_lock* functions (with or without an acquire context). It is forbidden to release the locks after releasing the acquire context….
writeback_inodes_sb_nr – writeback dirty inodes from given super_block Synopsis void writeback_inodes_sb_nr(struct super_block *sb, unsigned long nr, enum wb_reason reason); Arguments sb the superblock nr the number of pages to write reason reason why some writeback work initiated Description Start writeback on some inodes on this super_block. No guarantees are made on how many (if any)…
writeback_inodes_sb – writeback dirty inodes from given super_block Synopsis void writeback_inodes_sb(struct super_block *sb, enum wb_reason reason); Arguments sb the superblock reason reason why some writeback work was initiated Description Start writeback on some inodes on this super_block. No guarantees are made on how many (if any) will be written, and this function does not wait…
write_zsreg – Write to a Z8530 channel register Synopsis void write_zsreg(struct z8530_channel *c, u8 reg, u8 val); Arguments c The Z8530 channel reg Register number val Value to write Description Write a value to an indexed register. The caller must hold the lock to honour the irritating delay rules. We know about register 0 being…
write_zsdata – Write to a Z8530 control register Synopsis void write_zsdata(struct z8530_channel *c, u8 val); Arguments c The Z8530 channel val Value to write Description Write directly to the data register on the Z8530 Author Alan Cox <alan [at] lxorguk.ukuu.org.uk> Author. Copyright
write_zsctrl – Write to a Z8530 control register Synopsis void write_zsctrl(struct z8530_channel *c, u8 val); Arguments c The Z8530 channel val Value to write Description Write directly to the control register on the Z8530 Author Alan Cox <alan [at] lxorguk.ukuu.org.uk> Author. Copyright
write_one_page – write out a single page and optionally wait on I/O Synopsis int write_one_page(struct page *page, int wait); Arguments page the page to write wait if true, wait on writeout Description The page must be locked by the caller and will be unlocked upon return. write_one_page returns a negative error code if I/O failed….
write_inode_now – write an inode to disk Synopsis int write_inode_now(struct inode *inode, int sync); Arguments inode inode to write to disk sync whether the write should be synchronous or not Description This function commits an inode to disk immediately if it is dirty. This is primarily needed by knfsd. The caller must either have a…
write_cache_pages – walk the list of dirty pages of the given address space and write all of them. Synopsis int write_cache_pages(struct address_space *mapping, struct writeback_control *wbc, writepage_t writepage, void *data); Arguments mapping address space structure to write wbc subtract the number of written pages from *wbc->nr_to_write writepage function called for each page data data passed…