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Message-Id: <20240816090128.4561-1-konishi.ryusuke@gmail.com>
Date: Fri, 16 Aug 2024 18:01:28 +0900
From: Ryusuke Konishi <konishi.ryusuke@...il.com>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: linux-nilfs@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH] nilfs2: do not output warnings when clearing dirty buffers
After detecting file system corruption and degrading to a read-only
mount, dirty folios and buffers in the page cache are cleared, and a
large number of warnings are output at that time, often filling up
the kernel log.
In this case, since the degrading to a read-only mount is output to
the kernel log, these warnings are not very meaningful, and are
rather a nuisance in system management and debugging.
The related nilfs2-specific page/folio routines have a silent argument
that suppresses the warning output, but since it is not currently used
meaningfully, remove both the silent argument and the warning output.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@...il.com>
---
Andrew, please add this to the queue for the next cycle.
This prevents the kernel log from being filled with counterproductive
messages warning about dirty buffers being cleared when a file system
corruption is detected.
Thanks,
Ryusuke Konishi
fs/nilfs2/inode.c | 4 ++--
fs/nilfs2/mdt.c | 6 +++---
fs/nilfs2/page.c | 19 +++----------------
fs/nilfs2/page.h | 4 ++--
4 files changed, 10 insertions(+), 23 deletions(-)
diff --git a/fs/nilfs2/inode.c b/fs/nilfs2/inode.c
index 7340a01d80e1..c39bc940e6f2 100644
--- a/fs/nilfs2/inode.c
+++ b/fs/nilfs2/inode.c
@@ -162,7 +162,7 @@ static int nilfs_writepages(struct address_space *mapping,
int err = 0;
if (sb_rdonly(inode->i_sb)) {
- nilfs_clear_dirty_pages(mapping, false);
+ nilfs_clear_dirty_pages(mapping);
return -EROFS;
}
@@ -186,7 +186,7 @@ static int nilfs_writepage(struct page *page, struct writeback_control *wbc)
* have dirty pages that try to be flushed in background.
* So, here we simply discard this dirty page.
*/
- nilfs_clear_folio_dirty(folio, false);
+ nilfs_clear_folio_dirty(folio);
folio_unlock(folio);
return -EROFS;
}
diff --git a/fs/nilfs2/mdt.c b/fs/nilfs2/mdt.c
index 4f792a0ad0f0..ceb7dc0b5bad 100644
--- a/fs/nilfs2/mdt.c
+++ b/fs/nilfs2/mdt.c
@@ -411,7 +411,7 @@ nilfs_mdt_write_page(struct page *page, struct writeback_control *wbc)
* have dirty folios that try to be flushed in background.
* So, here we simply discard this dirty folio.
*/
- nilfs_clear_folio_dirty(folio, false);
+ nilfs_clear_folio_dirty(folio);
folio_unlock(folio);
return -EROFS;
}
@@ -638,10 +638,10 @@ void nilfs_mdt_restore_from_shadow_map(struct inode *inode)
if (mi->mi_palloc_cache)
nilfs_palloc_clear_cache(inode);
- nilfs_clear_dirty_pages(inode->i_mapping, true);
+ nilfs_clear_dirty_pages(inode->i_mapping);
nilfs_copy_back_pages(inode->i_mapping, shadow->inode->i_mapping);
- nilfs_clear_dirty_pages(ii->i_assoc_inode->i_mapping, true);
+ nilfs_clear_dirty_pages(ii->i_assoc_inode->i_mapping);
nilfs_copy_back_pages(ii->i_assoc_inode->i_mapping,
NILFS_I(shadow->inode)->i_assoc_inode->i_mapping);
diff --git a/fs/nilfs2/page.c b/fs/nilfs2/page.c
index 14e470fb8870..7797903e014e 100644
--- a/fs/nilfs2/page.c
+++ b/fs/nilfs2/page.c
@@ -357,9 +357,8 @@ void nilfs_copy_back_pages(struct address_space *dmap,
/**
* nilfs_clear_dirty_pages - discard dirty pages in address space
* @mapping: address space with dirty pages for discarding
- * @silent: suppress [true] or print [false] warning messages
*/
-void nilfs_clear_dirty_pages(struct address_space *mapping, bool silent)
+void nilfs_clear_dirty_pages(struct address_space *mapping)
{
struct folio_batch fbatch;
unsigned int i;
@@ -380,7 +379,7 @@ void nilfs_clear_dirty_pages(struct address_space *mapping, bool silent)
* was acquired. Skip processing in that case.
*/
if (likely(folio->mapping == mapping))
- nilfs_clear_folio_dirty(folio, silent);
+ nilfs_clear_folio_dirty(folio);
folio_unlock(folio);
}
@@ -392,20 +391,13 @@ void nilfs_clear_dirty_pages(struct address_space *mapping, bool silent)
/**
* nilfs_clear_folio_dirty - discard dirty folio
* @folio: dirty folio that will be discarded
- * @silent: suppress [true] or print [false] warning messages
*/
-void nilfs_clear_folio_dirty(struct folio *folio, bool silent)
+void nilfs_clear_folio_dirty(struct folio *folio)
{
- struct inode *inode = folio->mapping->host;
- struct super_block *sb = inode->i_sb;
struct buffer_head *bh, *head;
BUG_ON(!folio_test_locked(folio));
- if (!silent)
- nilfs_warn(sb, "discard dirty page: offset=%lld, ino=%lu",
- folio_pos(folio), inode->i_ino);
-
folio_clear_uptodate(folio);
folio_clear_mappedtodisk(folio);
@@ -419,11 +411,6 @@ void nilfs_clear_folio_dirty(struct folio *folio, bool silent)
bh = head;
do {
lock_buffer(bh);
- if (!silent)
- nilfs_warn(sb,
- "discard dirty block: blocknr=%llu, size=%zu",
- (u64)bh->b_blocknr, bh->b_size);
-
set_mask_bits(&bh->b_state, clear_bits, 0);
unlock_buffer(bh);
} while (bh = bh->b_this_page, bh != head);
diff --git a/fs/nilfs2/page.h b/fs/nilfs2/page.h
index 7e1a2c455a10..64521a03a19e 100644
--- a/fs/nilfs2/page.h
+++ b/fs/nilfs2/page.h
@@ -41,8 +41,8 @@ void nilfs_folio_bug(struct folio *);
int nilfs_copy_dirty_pages(struct address_space *, struct address_space *);
void nilfs_copy_back_pages(struct address_space *, struct address_space *);
-void nilfs_clear_folio_dirty(struct folio *, bool);
-void nilfs_clear_dirty_pages(struct address_space *, bool);
+void nilfs_clear_folio_dirty(struct folio *folio);
+void nilfs_clear_dirty_pages(struct address_space *mapping);
unsigned int nilfs_page_count_clean_buffers(struct page *, unsigned int,
unsigned int);
unsigned long nilfs_find_uncommitted_extent(struct inode *inode,
--
2.34.1
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