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authorIngo Molnar <mingo@kernel.org>2016-09-20 08:29:21 +0200
committerIngo Molnar <mingo@kernel.org>2016-09-20 08:29:21 +0200
commitb2c16e1efddeb517c62d242fb8ec30a383843468 (patch)
treefbfbe6f124a9423abf9a288ad46feb6db7469c42 /lib
parent81539169f283329fd8bc58457cc15754f683ba69 (diff)
parentd2ffb0103aaefa9b169da042cf39ce27bfb6cdbb (diff)
Merge branch 'linus' into x86/asm, to pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'lib')
-rw-r--r--lib/iov_iter.c24
1 files changed, 2 insertions, 22 deletions
diff --git a/lib/iov_iter.c b/lib/iov_iter.c
index 9e8c7386b3a0..7e3138cfc8c9 100644
--- a/lib/iov_iter.c
+++ b/lib/iov_iter.c
@@ -291,33 +291,13 @@ done:
}
/*
- * Fault in the first iovec of the given iov_iter, to a maximum length
- * of bytes. Returns 0 on success, or non-zero if the memory could not be
- * accessed (ie. because it is an invalid address).
- *
- * writev-intensive code may want this to prefault several iovecs -- that
- * would be possible (callers must not rely on the fact that _only_ the
- * first iovec will be faulted with the current implementation).
- */
-int iov_iter_fault_in_readable(struct iov_iter *i, size_t bytes)
-{
- if (!(i->type & (ITER_BVEC|ITER_KVEC))) {
- char __user *buf = i->iov->iov_base + i->iov_offset;
- bytes = min(bytes, i->iov->iov_len - i->iov_offset);
- return fault_in_pages_readable(buf, bytes);
- }
- return 0;
-}
-EXPORT_SYMBOL(iov_iter_fault_in_readable);
-
-/*
* Fault in one or more iovecs of the given iov_iter, to a maximum length of
* bytes. For each iovec, fault in each page that constitutes the iovec.
*
* Return 0 on success, or non-zero if the memory could not be accessed (i.e.
* because it is an invalid address).
*/
-int iov_iter_fault_in_multipages_readable(struct iov_iter *i, size_t bytes)
+int iov_iter_fault_in_readable(struct iov_iter *i, size_t bytes)
{
size_t skip = i->iov_offset;
const struct iovec *iov;
@@ -334,7 +314,7 @@ int iov_iter_fault_in_multipages_readable(struct iov_iter *i, size_t bytes)
}
return 0;
}
-EXPORT_SYMBOL(iov_iter_fault_in_multipages_readable);
+EXPORT_SYMBOL(iov_iter_fault_in_readable);
void iov_iter_init(struct iov_iter *i, int direction,
const struct iovec *iov, unsigned long nr_segs,