* [merged] mm-mmap-check-on-file-instead-of-the-rb_root_cached-of-its-address_space.patch removed from -mm tree
@ 2020-10-14 21:01 akpm
0 siblings, 0 replies; only message in thread
From: akpm @ 2020-10-14 21:01 UTC (permalink / raw)
To: akpm, mm-commits, richard.weiyang
The patch titled
Subject: mm/mmap: check on file instead of the rb_root_cached of its address_space
has been removed from the -mm tree. Its filename was
mm-mmap-check-on-file-instead-of-the-rb_root_cached-of-its-address_space.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Wei Yang <richard.weiyang@linux.alibaba.com>
Subject: mm/mmap: check on file instead of the rb_root_cached of its address_space
In __vma_adjust(), we do the check on *root* to decide whether to adjust
the address_space. It seems to be more meaningful to do the check on
*file* itself. This means we are adjusting some data because it is a file
backed vma.
Since we seem to assume the address_space is valid if it is a file backed
vma, let's just replace *root* with *file* here.
Link: https://lkml.kernel.org/r/20200913133631.37781-2-richard.weiyang@linux.alibaba.com
Signed-off-by: Wei Yang <richard.weiyang@linux.alibaba.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
mm/mmap.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
--- a/mm/mmap.c~mm-mmap-check-on-file-instead-of-the-rb_root_cached-of-its-address_space
+++ a/mm/mmap.c
@@ -823,7 +823,7 @@ again:
anon_vma_interval_tree_pre_update_vma(next);
}
- if (root) {
+ if (file) {
flush_dcache_mmap_lock(mapping);
vma_interval_tree_remove(vma, root);
if (adjust_next)
@@ -844,7 +844,7 @@ again:
next->vm_pgoff += adjust_next >> PAGE_SHIFT;
}
- if (root) {
+ if (file) {
if (adjust_next)
vma_interval_tree_insert(next, root);
vma_interval_tree_insert(vma, root);
@@ -896,7 +896,7 @@ again:
anon_vma_unlock_write(anon_vma);
}
- if (root) {
+ if (file) {
i_mmap_unlock_write(mapping);
uprobe_mmap(vma);
_
Patches currently in -mm which might be from richard.weiyang@linux.alibaba.com are
mm-page_reporting-drop-stale-list-head-check-in-page_reporting_cycle.patch
bitops-simplify-get_count_order_long.patch
bitops-use-the-same-mechanism-for-get_count_order.patch
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2020-10-14 21:01 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-10-14 21:01 [merged] mm-mmap-check-on-file-instead-of-the-rb_root_cached-of-its-address_space.patch removed from -mm tree akpm
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).