+ mm-optimize-copy_page_to-from_iter_iovec-fix.patch added to -mm tree

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



The patch titled
     Subject: mm-optimize-copy_page_to-from_iter_iovec-fix
has been added to the -mm tree.  Its filename is
     mm-optimize-copy_page_to-from_iter_iovec-fix.patch

This patch should soon appear at
    http://ozlabs.org/~akpm/mmots/broken-out/mm-optimize-copy_page_to-from_iter_iovec-fix.patch
and later at
    http://ozlabs.org/~akpm/mmotm/broken-out/mm-optimize-copy_page_to-from_iter_iovec-fix.patch

Before you just go and hit "reply", please:
   a) Consider who else should be cc'ed
   b) Prefer to cc a suitable mailing list as well
   c) Ideally: find the original patch on the mailing list and do a
      reply-to-all to that, adding suitable additional cc's

*** Remember to use Documentation/SubmitChecklist when testing your code ***

The -mm tree is included into linux-next and is updated
there every 3-4 working days

------------------------------------------------------
From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Subject: mm-optimize-copy_page_to-from_iter_iovec-fix

use IS_ENABLED(), per Andi

Cc: Alexander Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Cc: Mikulas Patocka <mpatocka@xxxxxxxxxx>
Cc: Andi Kleen <andi@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---

 lib/iov_iter.c |    6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff -puN lib/iov_iter.c~mm-optimize-copy_page_to-from_iter_iovec-fix lib/iov_iter.c
--- a/lib/iov_iter.c~mm-optimize-copy_page_to-from_iter_iovec-fix
+++ a/lib/iov_iter.c
@@ -159,8 +159,7 @@ static size_t copy_page_to_iter_iovec(st
 	buf = iov->iov_base + skip;
 	copy = min(bytes, iov->iov_len - skip);
 
-#ifdef CONFIG_HIGHMEM
-	if (!fault_in_pages_writeable(buf, copy)) {
+	if (IS_ENABLED(CONFIG_HIGHMEM) && !fault_in_pages_writeable(buf, copy)) {
 		kaddr = kmap_atomic(page);
 		from = kaddr + offset;
 
@@ -191,7 +190,6 @@ static size_t copy_page_to_iter_iovec(st
 		copy = min(bytes, iov->iov_len - skip);
 	}
 	/* Too bad - revert to non-atomic kmap */
-#endif
 
 	kaddr = kmap(page);
 	from = kaddr + offset;
@@ -212,9 +210,7 @@ static size_t copy_page_to_iter_iovec(st
 	}
 	kunmap(page);
 
-#ifdef CONFIG_HIGHMEM
 done:
-#endif
 	if (skip == iov->iov_len) {
 		iov++;
 		skip = 0;
_

Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are

i-need-old-gcc.patch
arch-alpha-kernel-systblss-remove-debug-check.patch
arm-arch-arm-include-asm-pageh-needs-personalityh.patch
ocfs2-improve-recovery-performance-v2-fix.patch
ocfs2-dlm-disable-bug_on-when-dlm_lock_res_dropping_ref-is-cleared-before-dlm_deref_lockres_done_handler-fix.patch
mm.patch
mm-reorganize-slab-freelist-randomization-fix.patch
mm-balloon-use-general-non-lru-movable-page-feature-fix.patch
mm-compaction-split-freepages-without-holding-the-zone-lock-fix-2.patch
mm-frontswap-convert-frontswap_enabled-to-static-key-checkpatch-fixes.patch
mm-add-nr_zsmalloc-to-vmstat-fix.patch
mm-memcg-use-consistent-gfp-flags-during-readahead-checkpatch-fixes.patch
mm-thp-make-swapin-readahead-under-down_read-of-mmap_sem-fix-2-fix.patch
mm-fix-build-warnings-in-linux-compactionh-fix.patch
mm-update-the-comment-in-__isolate_free_page-checkpatch-fixes.patch
revert-mm-mempool-only-set-__gfp_nomemalloc-if-there-are-free-elements-checkpatch-fixes.patch
mm-optimize-copy_page_to-from_iter_iovec-fix.patch
treewide-replace-obsolete-_refok-by-__ref-checkpatch-fixes.patch
printk-create-pr_level-functions-fix.patch
kexec-ensure-user-memory-sizes-do-not-wrap-fix.patch
kexec-allow-architectures-to-override-boot-mapping-fix.patch
allow-kdump-with-crash_kexec_post_notifiers-fix.patch
kexec-add-resriction-on-the-kexec_load-fix.patch
linux-next-rejects.patch
drivers-net-wireless-intel-iwlwifi-dvm-calibc-fix-min-warning.patch
bitmap-bitmap_equal-memcmp-optimization-fix.patch
kernel-forkc-export-kernel_thread-to-modules.patch
slab-leaks3-default-y.patch

--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Kernel Archive]     [IETF Annouce]     [DCCP]     [Netdev]     [Networking]     [Security]     [Bugtraq]     [Yosemite]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Linux SCSI]
  Powered by Linux