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Message-ID: <20240926140121.203821-1-kernel@pankajraghav.com>
Date: Thu, 26 Sep 2024 16:01:21 +0200
From: "Pankaj Raghav (Samsung)" <kernel@...kajraghav.com>
To: Theodore Ts'o <tytso@....edu>,
Chao Yu <chao@...nel.org>,
Jonathan Corbet <corbet@....net>,
willy@...radead.org,
Josef Bacik <josef@...icpanda.com>,
Johannes Weiner <hannes@...xchg.org>,
Michal Koutný <mkoutny@...e.com>,
Alexander Viro <viro@...iv.linux.org.uk>,
"Darrick J . Wong" <djwong@...nel.org>,
Zefan Li <lizefan.x@...edance.com>,
Tejun Heo <tj@...nel.org>,
akpm@...ux-foundation.org,
Christian Brauner <brauner@...nel.org>,
Andreas Dilger <adilger.kernel@...ger.ca>,
Jaegeuk Kim <jaegeuk@...nel.org>,
Jan Kara <jack@...e.cz>,
Chris Mason <clm@...com>,
David Sterba <dsterba@...e.com>
Cc: cgroups@...r.kernel.org,
linux-btrfs@...r.kernel.org,
linux-ext4@...r.kernel.org,
linux-kernel@...r.kernel.org,
linux-f2fs-devel@...ts.sourceforge.net,
linux-fsdevel@...r.kernel.org,
mcgrof@...nel.org,
gost.dev@...sung.com,
linux-doc@...r.kernel.org,
linux-xfs@...r.kernel.org,
kernel@...kajraghav.com,
Pankaj Raghav <p.raghav@...sung.com>
Subject: [PATCH] fs/writeback: convert wbc_account_cgroup_owner to take a folio
From: Pankaj Raghav <p.raghav@...sung.com>
Most of the callers of wbc_account_cgroup_owner() are converting a folio
to page before calling the function. wbc_account_cgroup_owner() is
converting the page back to a folio to call mem_cgroup_css_from_folio().
Convert wbc_account_cgroup_owner() to take a folio instead of a page,
and convert all callers to pass a folio directly except f2fs.
Convert the page to folio for all the callers from f2fs as they were the
only callers calling wbc_account_cgroup_owner() with a page. As f2fs is
already in the process of converting to folios, these call sites might
also soon be calling wbc_account_cgroup_owner() with a folio directly in
the future.
No functional changes. Only compile tested.
Signed-off-by: Pankaj Raghav <p.raghav@...sung.com>
---
Documentation/admin-guide/cgroup-v2.rst | 2 +-
fs/btrfs/extent_io.c | 7 +++----
fs/btrfs/inode.c | 2 +-
fs/buffer.c | 4 ++--
fs/ext4/page-io.c | 2 +-
fs/f2fs/data.c | 9 ++++++---
fs/fs-writeback.c | 8 +++-----
fs/iomap/buffered-io.c | 2 +-
fs/mpage.c | 2 +-
include/linux/writeback.h | 4 ++--
10 files changed, 21 insertions(+), 21 deletions(-)
diff --git a/Documentation/admin-guide/cgroup-v2.rst b/Documentation/admin-guide/cgroup-v2.rst
index 69af2173555fb..064012ea6f366 100644
--- a/Documentation/admin-guide/cgroup-v2.rst
+++ b/Documentation/admin-guide/cgroup-v2.rst
@@ -2945,7 +2945,7 @@ following two functions.
a queue (device) has been associated with the bio and
before submission.
- wbc_account_cgroup_owner(@wbc, @page, @bytes)
+ wbc_account_cgroup_owner(@wbc, @folio, @bytes)
Should be called for each data segment being written out.
While this function doesn't care exactly when it's called
during the writeback session, it's the easiest and most
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 39c9677c47d5a..4667d1e034e0e 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -785,7 +785,7 @@ static void submit_extent_folio(struct btrfs_bio_ctrl *bio_ctrl,
}
if (bio_ctrl->wbc)
- wbc_account_cgroup_owner(bio_ctrl->wbc, &folio->page,
+ wbc_account_cgroup_owner(bio_ctrl->wbc, folio,
len);
size -= len;
@@ -1707,7 +1707,7 @@ static noinline_for_stack void write_one_eb(struct extent_buffer *eb,
ret = bio_add_folio(&bbio->bio, folio, eb->len,
eb->start - folio_pos(folio));
ASSERT(ret);
- wbc_account_cgroup_owner(wbc, folio_page(folio, 0), eb->len);
+ wbc_account_cgroup_owner(wbc, folio, eb->len);
folio_unlock(folio);
} else {
int num_folios = num_extent_folios(eb);
@@ -1721,8 +1721,7 @@ static noinline_for_stack void write_one_eb(struct extent_buffer *eb,
folio_start_writeback(folio);
ret = bio_add_folio(&bbio->bio, folio, eb->folio_size, 0);
ASSERT(ret);
- wbc_account_cgroup_owner(wbc, folio_page(folio, 0),
- eb->folio_size);
+ wbc_account_cgroup_owner(wbc, folio, eb->folio_size);
wbc->nr_to_write -= folio_nr_pages(folio);
folio_unlock(folio);
}
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index edac499fd83d2..eb64f04755c23 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -1729,7 +1729,7 @@ static bool run_delalloc_compressed(struct btrfs_inode *inode,
* need full accuracy. Just account the whole thing
* against the first page.
*/
- wbc_account_cgroup_owner(wbc, &locked_folio->page,
+ wbc_account_cgroup_owner(wbc, locked_folio,
cur_end - start);
async_chunk[i].locked_folio = locked_folio;
locked_folio = NULL;
diff --git a/fs/buffer.c b/fs/buffer.c
index 1fc9a50def0b5..32bd0f4c42236 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -2803,7 +2803,7 @@ static void submit_bh_wbc(blk_opf_t opf, struct buffer_head *bh,
bio->bi_iter.bi_sector = bh->b_blocknr * (bh->b_size >> 9);
bio->bi_write_hint = write_hint;
- __bio_add_page(bio, bh->b_page, bh->b_size, bh_offset(bh));
+ bio_add_folio_nofail(bio, bh->b_folio, bh->b_size, bh_offset(bh));
bio->bi_end_io = end_bio_bh_io_sync;
bio->bi_private = bh;
@@ -2813,7 +2813,7 @@ static void submit_bh_wbc(blk_opf_t opf, struct buffer_head *bh,
if (wbc) {
wbc_init_bio(wbc, bio);
- wbc_account_cgroup_owner(wbc, bh->b_page, bh->b_size);
+ wbc_account_cgroup_owner(wbc, bh->b_folio, bh->b_size);
}
submit_bio(bio);
diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c
index ad5543866d215..b7b9261fec3b5 100644
--- a/fs/ext4/page-io.c
+++ b/fs/ext4/page-io.c
@@ -421,7 +421,7 @@ static void io_submit_add_bh(struct ext4_io_submit *io,
io_submit_init_bio(io, bh);
if (!bio_add_folio(io->io_bio, io_folio, bh->b_size, bh_offset(bh)))
goto submit_and_retry;
- wbc_account_cgroup_owner(io->io_wbc, &folio->page, bh->b_size);
+ wbc_account_cgroup_owner(io->io_wbc, folio, bh->b_size);
io->io_next_block++;
}
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 94f7b084f6016..e3ce763cce18f 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -711,7 +711,8 @@ int f2fs_submit_page_bio(struct f2fs_io_info *fio)
}
if (fio->io_wbc && !is_read_io(fio->op))
- wbc_account_cgroup_owner(fio->io_wbc, fio->page, PAGE_SIZE);
+ wbc_account_cgroup_owner(fio->io_wbc, page_folio(fio->page),
+ PAGE_SIZE);
inc_page_count(fio->sbi, is_read_io(fio->op) ?
__read_io_type(page) : WB_DATA_TYPE(fio->page, false));
@@ -911,7 +912,8 @@ int f2fs_merge_page_bio(struct f2fs_io_info *fio)
}
if (fio->io_wbc)
- wbc_account_cgroup_owner(fio->io_wbc, fio->page, PAGE_SIZE);
+ wbc_account_cgroup_owner(fio->io_wbc, page_folio(fio->page),
+ PAGE_SIZE);
inc_page_count(fio->sbi, WB_DATA_TYPE(page, false));
@@ -1011,7 +1013,8 @@ void f2fs_submit_page_write(struct f2fs_io_info *fio)
}
if (fio->io_wbc)
- wbc_account_cgroup_owner(fio->io_wbc, fio->page, PAGE_SIZE);
+ wbc_account_cgroup_owner(fio->io_wbc, page_folio(fio->page),
+ PAGE_SIZE);
io->last_block_in_bio = fio->new_blkaddr;
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index d8bec3c1bb1fa..2391b09f4cede 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -890,17 +890,16 @@ EXPORT_SYMBOL_GPL(wbc_detach_inode);
/**
* wbc_account_cgroup_owner - account writeback to update inode cgroup ownership
* @wbc: writeback_control of the writeback in progress
- * @page: page being written out
+ * @folio: folio being written out
* @bytes: number of bytes being written out
*
- * @bytes from @page are about to written out during the writeback
+ * @bytes from @folio are about to written out during the writeback
* controlled by @wbc. Keep the book for foreign inode detection. See
* wbc_detach_inode().
*/
-void wbc_account_cgroup_owner(struct writeback_control *wbc, struct page *page,
+void wbc_account_cgroup_owner(struct writeback_control *wbc, struct folio *folio,
size_t bytes)
{
- struct folio *folio;
struct cgroup_subsys_state *css;
int id;
@@ -913,7 +912,6 @@ void wbc_account_cgroup_owner(struct writeback_control *wbc, struct page *page,
if (!wbc->wb || wbc->no_cgroup_owner)
return;
- folio = page_folio(page);
css = mem_cgroup_css_from_folio(folio);
/* dead cgroups shouldn't contribute to inode ownership arbitration */
if (!(css->flags & CSS_ONLINE))
diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c
index 11ea747228aee..3d1fae7d3a64e 100644
--- a/fs/iomap/buffered-io.c
+++ b/fs/iomap/buffered-io.c
@@ -1833,7 +1833,7 @@ static int iomap_add_to_ioend(struct iomap_writepage_ctx *wpc,
if (ifs)
atomic_add(len, &ifs->write_bytes_pending);
wpc->ioend->io_size += len;
- wbc_account_cgroup_owner(wbc, &folio->page, len);
+ wbc_account_cgroup_owner(wbc, folio, len);
return 0;
}
diff --git a/fs/mpage.c b/fs/mpage.c
index b5b5ddf9d513d..82aecf3727437 100644
--- a/fs/mpage.c
+++ b/fs/mpage.c
@@ -606,7 +606,7 @@ static int __mpage_writepage(struct folio *folio, struct writeback_control *wbc,
* the confused fail path above (OOM) will be very confused when
* it finds all bh marked clean (i.e. it will not write anything)
*/
- wbc_account_cgroup_owner(wbc, &folio->page, folio_size(folio));
+ wbc_account_cgroup_owner(wbc, folio, folio_size(folio));
length = first_unmapped << blkbits;
if (!bio_add_folio(bio, folio, length, 0)) {
bio = mpage_bio_submit_write(bio);
diff --git a/include/linux/writeback.h b/include/linux/writeback.h
index d6db822e4bb30..641a057e04132 100644
--- a/include/linux/writeback.h
+++ b/include/linux/writeback.h
@@ -217,7 +217,7 @@ void wbc_attach_and_unlock_inode(struct writeback_control *wbc,
struct inode *inode)
__releases(&inode->i_lock);
void wbc_detach_inode(struct writeback_control *wbc);
-void wbc_account_cgroup_owner(struct writeback_control *wbc, struct page *page,
+void wbc_account_cgroup_owner(struct writeback_control *wbc, struct folio *folio,
size_t bytes);
int cgroup_writeback_by_id(u64 bdi_id, int memcg_id,
enum wb_reason reason, struct wb_completion *done);
@@ -324,7 +324,7 @@ static inline void wbc_init_bio(struct writeback_control *wbc, struct bio *bio)
}
static inline void wbc_account_cgroup_owner(struct writeback_control *wbc,
- struct page *page, size_t bytes)
+ struct folio *folio, size_t bytes)
{
}
base-commit: 92fc9636d1471b7f68bfee70c776f7f77e747b97
--
2.44.1
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