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authorMatthew Wilcox (Oracle) <willy@infradead.org>2020-09-21 17:58:39 +0200
committerDarrick J. Wong <darrick.wong@oracle.com>2020-09-21 17:59:26 +0200
commita6901d4d148dcbad7efb3174afbdf68c995618c2 (patch)
tree800c6f932d4cff0c52a12e9310ea2de9c9db4c97 /fs/iomap
parentfs: Introduce i_blocks_per_page (diff)
downloadlinux-a6901d4d148dcbad7efb3174afbdf68c995618c2.tar.xz
linux-a6901d4d148dcbad7efb3174afbdf68c995618c2.zip
iomap: Use kzalloc to allocate iomap_page
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> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Diffstat (limited to 'fs/iomap')
-rw-r--r--fs/iomap/buffered-io.c10
1 files changed, 1 insertions, 9 deletions
diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c
index dd0739606dce..d1caea4c5fba 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;
}