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| author | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2014-05-28 21:38:53 +0400 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2020-10-07 21:28:39 +0300 |
| commit | 84ce182ab85b8ad5002fb1125ba572df99dd0d1c (patch) | |
| tree | 36f05b537b1100e12933283fa9d445f193e86d81 /include/linux/sunrpc/xdr.h | |
| parent | 43f0f0816cdbe7361dd17db3b4c1033446033ba6 (diff) | |
| download | linux-84ce182ab85b8ad5002fb1125ba572df99dd0d1c.tar.xz | |
SUNRPC: Add the ability to expand holes in data pages
This patch adds the ability to "read a hole" into a set of XDR data
pages by taking the following steps:
1) Shift all data after the current xdr->p to the right, possibly into
the tail,
2) Zero the specified range, and
3) Update xdr->p to point beyond the hole.
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'include/linux/sunrpc/xdr.h')
| -rw-r--r-- | include/linux/sunrpc/xdr.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/sunrpc/xdr.h b/include/linux/sunrpc/xdr.h index 25a68dd87ecf..f9636d2a6d54 100644 --- a/include/linux/sunrpc/xdr.h +++ b/include/linux/sunrpc/xdr.h @@ -250,6 +250,7 @@ extern __be32 *xdr_inline_decode(struct xdr_stream *xdr, size_t nbytes); extern unsigned int xdr_read_pages(struct xdr_stream *xdr, unsigned int len); extern void xdr_enter_page(struct xdr_stream *xdr, unsigned int len); extern int xdr_process_buf(struct xdr_buf *buf, unsigned int offset, unsigned int len, int (*actor)(struct scatterlist *, void *), void *data); +extern uint64_t xdr_expand_hole(struct xdr_stream *, uint64_t, uint64_t); /** * xdr_stream_remaining - Return the number of bytes remaining in the stream |