At now while switch page bits in data ranges
we always hande +1 page, for cover case
where end of data range is not page aligned
Let's handle that case more obvious and efficient
Check end aligment directly and touch +1 page
only then needed
Signed-off-by: Timofey Titovets <nefelim4ag@xxxxxxxxx>
---
fs/btrfs/extent_io.c | 12 ++++++++++--
fs/btrfs/inode.c | 6 +++++-
2 files changed, 15 insertions(+), 3 deletions(-)
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 98d85d2009f8..ccb66c1485e2 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -1360,7 +1360,11 @@ void extent_range_clear_dirty_for_io(struct inode *inode, u64 start, u64 end)
unsigned long end_index = end >> PAGE_SHIFT;
struct page *page;
- while (index <= end_index) {
+ /* Don't miss unaligned end */
+ if (end%PAGE_SIZE > 0)
+ end_index++;
+
+ while (index < end_index) {
page = find_get_page(inode->i_mapping, index);
BUG_ON(!page); /* Pages should be in the extent_io_tree */
clear_page_dirty_for_io(page);
@@ -1375,7 +1379,11 @@ void extent_range_redirty_for_io(struct inode *inode, u64 start, u64 end)
unsigned long end_index = end >> PAGE_SHIFT;
struct page *page;
- while (index <= end_index) {
+ /* Don't miss unaligned end */
+ if (end%PAGE_SIZE > 0)
+ end_index++;
+
+ while (index < end_index) {
page = find_get_page(inode->i_mapping, index);
BUG_ON(!page); /* Pages should be in the extent_io_tree */
__set_page_dirty_nobuffers(page);
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index cb7779b08aaf..79feaea0fede 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -10745,7 +10745,11 @@ void btrfs_set_range_writeback(void *private_data, u64 start, u64 end)
unsigned long end_index = end >> PAGE_SHIFT;
struct page *page;
- while (index <= end_index) {
+ /* Don't miss unaligned end */
+ if (end%PAGE_SIZE > 0)
+ end_index++;
+
+ while (index < end_index) {
page = find_get_page(inode->i_mapping, index);
ASSERT(page); /* Pages should be in the extent_io_tree */
set_page_writeback(page);
--
2.14.1
--
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