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iomap: Use bitmap ops to set uptodate bits 

Now that the bitmap is protected by a spinlock, we can use the
more efficient bitmap ops instead of individual test/set bit ops.

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>
This commit is contained in:
Matthew Wilcox (Oracle) 2020-09-21 08:58:40 -07:00 committed by Darrick J. Wong
parent a6901d4d14
commit b21866f514
1 changed files with 2 additions and 10 deletions
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12
fs/iomap/buffered-io.c
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@ -134,19 +134,11 @@ iomap_iop_set_range_uptodate(struct page *page, unsigned off, unsigned len)
struct inode *inode = page->mapping->host;
unsigned first = off >> inode->i_blkbits;
unsigned last = (off + len - 1) >> inode->i_blkbits;
bool uptodate = true;
unsigned long flags;
unsigned int i;
spin_lock_irqsave(&iop->uptodate_lock, flags);
for (i = 0; i < i_blocks_per_page(inode, page); i++) {
if (i >= first && i <= last)
set_bit(i, iop->uptodate);
else if (!test_bit(i, iop->uptodate))
uptodate = false;
}
if (uptodate)
bitmap_set(iop->uptodate, first, last - first + 1);
if (bitmap_full(iop->uptodate, i_blocks_per_page(inode, page)))
SetPageUptodate(page);
spin_unlock_irqrestore(&iop->uptodate_lock, flags);
}