lkml.org 
[lkml]   [2020]   [Sep]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v2 3/9] iomap: Use kzalloc to allocate iomap_page
Date
We can skip most of the initialisation, although spinlocks still
need explicit initialisation as architectures may use a non-zero
value to indicate unlocked. The comment is no longer useful as
attach_page_private() handles the refcount now.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
---
fs/iomap/buffered-io.c | 10 +---------
1 file changed, 1 insertion(+), 9 deletions(-)

diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c
index 330f86b825d7..58a1fd83f2a4 100644
--- a/fs/iomap/buffered-io.c
+++ b/fs/iomap/buffered-io.c
@@ -49,16 +49,8 @@ iomap_page_create(struct inode *inode, struct page *page)
if (iop || i_blocks_per_page(inode, page) <= 1)
return iop;

- iop = kmalloc(sizeof(*iop), GFP_NOFS | __GFP_NOFAIL);
- atomic_set(&iop->read_count, 0);
- atomic_set(&iop->write_count, 0);
+ iop = kzalloc(sizeof(*iop), GFP_NOFS | __GFP_NOFAIL);
spin_lock_init(&iop->uptodate_lock);
- bitmap_zero(iop->uptodate, PAGE_SIZE / SECTOR_SIZE);
-
- /*
- * migrate_page_move_mapping() assumes that pages with private data have
- * their count elevated by 1.
- */
attach_page_private(page, iop);
return iop;
}
--
2.28.0
\
 
 \ /
  Last update: 2020-09-11 01:48    [W:0.166 / U:0.692 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site