The invalidatepage code bails if it encounters a non-zero page offset. The
current logic that does is non-obvious with multiple if statements.
This should be logically and functionally equivalent.
Signed-off-by: Milosz Tanski <mil...@adfin.com>
---
fs/ceph/addr.c | 29 +++++++++++++++--------------
1 file changed, 15 insertions(+), 14 deletions(-)
diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index f1d6c60..341f998 100644
--- a/fs/ceph/addr.c
+++ b/fs/ceph/addr.c
@@ -150,6 +150,13 @@ static void ceph_invalidatepage(struct page *page,
unsigned long offset)
struct ceph_snap_context *snapc = page_snap_context(page);
inode = page->mapping->host;
+ ci = ceph_inode(inode);
+
+ if (offset != 0) {
+ dout("%p invalidatepage %p idx %lu partial dirty page\n",
+ inode, page, page->index);
+ return;
+ }
/*
* We can get non-dirty pages here due to races between
@@ -159,21 +166,15 @@ static void ceph_invalidatepage(struct page *page,
unsigned long offset)
if (!PageDirty(page))
pr_err("%p invalidatepage %p page not dirty\n", inode, page);
- if (offset == 0)
- ClearPageChecked(page);
+ ClearPageChecked(page);
- ci = ceph_inode(inode);
- if (offset == 0) {
- dout("%p invalidatepage %p idx %lu full dirty page %lu\n",
- inode, page, page->index, offset);
- ceph_put_wrbuffer_cap_refs(ci, 1, snapc);
- ceph_put_snap_context(snapc);
- page->private = 0;
- ClearPagePrivate(page);
- } else {
- dout("%p invalidatepage %p idx %lu partial dirty page\n",
- inode, page, page->index);
- }
+ dout("%p invalidatepage %p idx %lu full dirty page %lu\n",
+ inode, page, page->index, offset);
+
+ ceph_put_wrbuffer_cap_refs(ci, 1, snapc);
+ ceph_put_snap_context(snapc);
+ page->private = 0;
+ ClearPagePrivate(page);
}
/* just a sanity check */
--
1.8.1.2
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