This is a note to let you know that I've just added the patch titled
ext4: convert ext4_da_do_write_end() to take a folio
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ext4-convert-ext4_da_do_write_end-to-take-a-folio.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit b008de209efbbcd431212db192d939332b259b40
Author: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Date: Thu Dec 14 05:30:35 2023 +0000
ext4: convert ext4_da_do_write_end() to take a folio
[ Upstream commit 4d5cdd757d0c74924b629559fccb68d8803ce995 ]
There's nothing page-specific happening in ext4_da_do_write_end();
it's merely used for its refcount & lock, both of which are folio
properties. Saves four calls to compound_head().
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Reviewed-by: Jan Kara <jack@xxxxxxx>
Link: https://lore.kernel.org/r/20231214053035.1018876-1-willy@xxxxxxxxxxxxx
Signed-off-by: Theodore Ts'o <tytso@xxxxxxx>
Stable-dep-of: 83f4414b8f84 ("ext4: sanity check for NULL pointer after ext4_force_shutdown")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index cef119a2476bb..e24afb80c0f6b 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -2966,7 +2966,7 @@ static int ext4_da_should_update_i_disksize(struct folio *folio,
static int ext4_da_do_write_end(struct address_space *mapping,
loff_t pos, unsigned len, unsigned copied,
- struct page *page)
+ struct folio *folio)
{
struct inode *inode = mapping->host;
loff_t old_size = inode->i_size;
@@ -2977,12 +2977,13 @@ static int ext4_da_do_write_end(struct address_space *mapping,
* block_write_end() will mark the inode as dirty with I_DIRTY_PAGES
* flag, which all that's needed to trigger page writeback.
*/
- copied = block_write_end(NULL, mapping, pos, len, copied, page, NULL);
+ copied = block_write_end(NULL, mapping, pos, len, copied,
+ &folio->page, NULL);
new_i_size = pos + copied;
/*
- * It's important to update i_size while still holding page lock,
- * because page writeout could otherwise come in and zero beyond
+ * It's important to update i_size while still holding folio lock,
+ * because folio writeout could otherwise come in and zero beyond
* i_size.
*
* Since we are holding inode lock, we are sure i_disksize <=
@@ -3000,14 +3001,14 @@ static int ext4_da_do_write_end(struct address_space *mapping,
i_size_write(inode, new_i_size);
end = (new_i_size - 1) & (PAGE_SIZE - 1);
- if (copied && ext4_da_should_update_i_disksize(page_folio(page), end)) {
+ if (copied && ext4_da_should_update_i_disksize(folio, end)) {
ext4_update_i_disksize(inode, new_i_size);
disksize_changed = true;
}
}
- unlock_page(page);
- put_page(page);
+ folio_unlock(folio);
+ folio_put(folio);
if (old_size < pos)
pagecache_isize_extended(inode, old_size, pos);
@@ -3046,10 +3047,10 @@ static int ext4_da_write_end(struct file *file,
return ext4_write_inline_data_end(inode, pos, len, copied,
folio);
- if (unlikely(copied < len) && !PageUptodate(page))
+ if (unlikely(copied < len) && !folio_test_uptodate(folio))
copied = 0;
- return ext4_da_do_write_end(mapping, pos, len, copied, &folio->page);
+ return ext4_da_do_write_end(mapping, pos, len, copied, folio);
}
/*
