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authorPaul Mackerras <paulus@samba.org>2008-01-31 01:25:51 +0100
committerPaul Mackerras <paulus@samba.org>2008-01-31 01:25:51 +0100
commitbd45ac0c5daae35e7c71138172e63df5cf644cf6 (patch)
tree5eb5a599bf6a9d7a8a34e802db932aa9e9555de4 /fs/splice.c
parentMerge branch 'for-2.6.25' of git://git.secretlab.ca/git/linux-2.6-mpc52xx (diff)
parentMerge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog (diff)
downloadlinux-bd45ac0c5daae35e7c71138172e63df5cf644cf6.tar.xz
linux-bd45ac0c5daae35e7c71138172e63df5cf644cf6.zip
Merge branch 'linux-2.6'
Diffstat (limited to 'fs/splice.c')
-rw-r--r--fs/splice.c32
1 files changed, 15 insertions, 17 deletions
diff --git a/fs/splice.c b/fs/splice.c
index 6bdcb6107bc3..1577a7391d23 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;
@@ -908,10 +914,6 @@ static long do_splice_from(struct pipe_inode_info *pipe, struct file *out,
if (unlikely(ret < 0))
return ret;
- ret = security_file_permission(out, MAY_WRITE);
- if (unlikely(ret < 0))
- return ret;
-
return out->f_op->splice_write(pipe, out, ppos, len, flags);
}
@@ -934,10 +936,6 @@ static long do_splice_to(struct file *in, loff_t *ppos,
if (unlikely(ret < 0))
return ret;
- ret = security_file_permission(in, MAY_READ);
- if (unlikely(ret < 0))
- return ret;
-
return in->f_op->splice_read(in, ppos, pipe, len, flags);
}
@@ -1033,7 +1031,11 @@ ssize_t splice_direct_to_actor(struct file *in, struct splice_desc *sd,
goto out_release;
}
+done:
pipe->nrbufs = pipe->curbuf = 0;
+ if (bytes > 0)
+ file_accessed(in);
+
return bytes;
out_release:
@@ -1049,16 +1051,11 @@ out_release:
buf->ops = NULL;
}
}
- pipe->nrbufs = pipe->curbuf = 0;
-
- /*
- * If we transferred some data, return the number of bytes:
- */
- if (bytes > 0)
- return bytes;
- return ret;
+ if (!bytes)
+ bytes = ret;
+ goto done;
}
EXPORT_SYMBOL(splice_direct_to_actor);
@@ -1440,6 +1437,7 @@ 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);