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authorAl Viro <viro@zeniv.linux.org.uk>2014-03-05 19:28:09 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2014-05-06 17:32:49 -0400
commit71d8e532b1549a478e6a6a8a44f309d050294d00 (patch)
tree58b40c17cbb806c94aa07121a8b010d16f825d27 /mm/iov_iter.c
parented978a811ec528dbe40243605c3afab55892f722 (diff)
downloadlinux-71d8e532b1549a478e6a6a8a44f309d050294d00.tar.gz
start adding the tag to iov_iter
For now, just use the same thing we pass to ->direct_IO() - it's all iovec-based at the moment. Pass it explicitly to iov_iter_init() and account for kvec vs. iovec in there, by the same kludge NFS ->direct_IO() uses. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'mm/iov_iter.c')
-rw-r--r--mm/iov_iter.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/mm/iov_iter.c b/mm/iov_iter.c
index 2f762cc21080..e2c9a2db4350 100644
--- a/mm/iov_iter.c
+++ b/mm/iov_iter.c
@@ -220,3 +220,18 @@ unsigned long iov_iter_alignment(const struct iov_iter *i)
return res;
}
EXPORT_SYMBOL(iov_iter_alignment);
+
+void iov_iter_init(struct iov_iter *i, int direction,
+ const struct iovec *iov, unsigned long nr_segs,
+ size_t count)
+{
+ /* It will get better. Eventually... */
+ if (segment_eq(get_fs(), KERNEL_DS))
+ direction |= REQ_KERNEL;
+ i->type = direction;
+ i->iov = iov;
+ i->nr_segs = nr_segs;
+ i->iov_offset = 0;
+ i->count = count;
+}
+EXPORT_SYMBOL(iov_iter_init);