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| author | Jens Axboe <jens.axboe@oracle.com> | 2007-11-06 23:29:47 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-01-28 14:53:30 -0800 |
| commit | bbdfc2f70610bebb841d0874dc901c648308e43a (patch) | |
| tree | 0f78843b93bb3338ccd6dd36bd7d3677a97083e5 | |
| parent | d10f2150eab62f633aeae36cf4612d1f648a817e (diff) | |
| download | op-kernel-dev-bbdfc2f70610bebb841d0874dc901c648308e43a.zip op-kernel-dev-bbdfc2f70610bebb841d0874dc901c648308e43a.tar.gz | |
[SPLICE]: Don't assume regular pages in splice_to_pipe()
Allow caller to pass in a release function, there might be
other resources that need releasing as well. Needed for
network receive.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | fs/splice.c | 9 | ||||
| -rw-r--r-- | include/linux/splice.h | 1 |
2 files changed, 9 insertions, 1 deletions
diff --git a/fs/splice.c b/fs/splice.c index 56b802b..0a0b79b 100644 --- a/fs/splice.c +++ b/fs/splice.c @@ -254,11 +254,16 @@ ssize_t splice_to_pipe(struct pipe_inode_info *pipe, } while (page_nr < spd_pages) - page_cache_release(spd->pages[page_nr++]); + spd->spd_release(spd, page_nr++); return ret; } +static void spd_release_page(struct splice_pipe_desc *spd, unsigned int i) +{ + page_cache_release(spd->pages[i]); +} + static int __generic_file_splice_read(struct file *in, loff_t *ppos, struct pipe_inode_info *pipe, size_t len, @@ -277,6 +282,7 @@ __generic_file_splice_read(struct file *in, loff_t *ppos, .partial = partial, .flags = flags, .ops = &page_cache_pipe_buf_ops, + .spd_release = spd_release_page, }; index = *ppos >> PAGE_CACHE_SHIFT; @@ -1432,6 +1438,7 @@ static long vmsplice_to_pipe(struct file *file, const struct iovec __user *iov, .partial = partial, .flags = flags, .ops = &user_page_pipe_buf_ops, + .spd_release = spd_release_page, }; pipe = pipe_info(file->f_path.dentry->d_inode); diff --git a/include/linux/splice.h b/include/linux/splice.h index 33e447f..528dcb9 100644 --- a/include/linux/splice.h +++ b/include/linux/splice.h @@ -53,6 +53,7 @@ struct splice_pipe_desc { int nr_pages; /* number of pages in map */ unsigned int flags; /* splice flags */ const struct pipe_buf_operations *ops;/* ops associated with output pipe */ + void (*spd_release)(struct splice_pipe_desc *, unsigned int); }; typedef int (splice_actor)(struct pipe_inode_info *, struct pipe_buffer *, |
