From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
To: linux-mm@kvack.org, linux-fsdevel@vger.kernel.org
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>,
linux-nvdimm@lists.01.org
Subject: [PATCH 4/4] mm: Remove nrexceptional from inode
Date: Tue, 4 Aug 2020 17:17:55 +0100 [thread overview]
Message-ID: <20200804161755.10100-5-willy@infradead.org> (raw)
In-Reply-To: <20200804161755.10100-1-willy@infradead.org>
We no longer track anything in nrexceptional, so remove it, saving 8
bytes per inode.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
---
fs/inode.c | 2 +-
include/linux/fs.h | 2 --
2 files changed, 1 insertion(+), 3 deletions(-)
diff --git a/fs/inode.c b/fs/inode.c
index 72c4c347afb7..b5c4aff077b7 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -528,7 +528,7 @@ void clear_inode(struct inode *inode)
*/
xa_lock_irq(&inode->i_data.i_pages);
BUG_ON(inode->i_data.nrpages);
- BUG_ON(inode->i_data.nrexceptional);
+ BUG_ON(!page_cache_empty(&inode->i_data));
xa_unlock_irq(&inode->i_data.i_pages);
BUG_ON(!list_empty(&inode->i_data.private_list));
BUG_ON(!(inode->i_state & I_FREEING));
diff --git a/include/linux/fs.h b/include/linux/fs.h
index f5abba86107d..4fd8923cba43 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -436,7 +436,6 @@ int pagecache_write_end(struct file *, struct address_space *mapping,
* @i_mmap: Tree of private and shared mappings.
* @i_mmap_rwsem: Protects @i_mmap and @i_mmap_writable.
* @nrpages: Number of page entries, protected by the i_pages lock.
- * @nrexceptional: Shadow or DAX entries, protected by the i_pages lock.
* @writeback_index: Writeback starts here.
* @a_ops: Methods.
* @flags: Error bits and flags (AS_*).
@@ -457,7 +456,6 @@ struct address_space {
struct rb_root_cached i_mmap;
struct rw_semaphore i_mmap_rwsem;
unsigned long nrpages;
- unsigned long nrexceptional;
pgoff_t writeback_index;
const struct address_space_operations *a_ops;
unsigned long flags;
--
2.27.0
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next prev parent reply other threads:[~2020-08-04 16:18 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-04 16:17 [PATCH 0/4] Remove nrexceptional tracking Matthew Wilcox (Oracle)
2020-08-04 16:17 ` [PATCH 1/4] mm: Introduce and use page_cache_empty Matthew Wilcox (Oracle)
2020-08-06 23:24 ` Kirill A. Shutemov
2020-08-16 1:48 ` Matthew Wilcox
2020-08-04 16:17 ` [PATCH 2/4] mm: Stop accounting shadow entries Matthew Wilcox (Oracle)
2020-08-04 16:17 ` [PATCH 3/4] dax: Account DAX entries as nrpages Matthew Wilcox (Oracle)
2020-08-04 16:17 ` Matthew Wilcox (Oracle) [this message]
2020-08-06 19:44 ` [PATCH 0/4] Remove nrexceptional tracking Verma, Vishal L
2020-08-06 20:16 ` Verma, Vishal L
2020-10-08 19:33 ` Matthew Wilcox
2020-10-09 23:04 ` Verma, Vishal L
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