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authorMatthew Wilcox (Oracle) <willy@infradead.org>2022-03-04 14:05:23 -0500
committerMatthew Wilcox (Oracle) <willy@infradead.org>2022-04-01 14:40:43 -0400
commit2756c818e5cbcc4c9d13d7399273e86068e95156 (patch)
treee075c92d42c38ac420357687b202a61cdf8a539f /fs
parent1e4702806faca1551733f58be17ea11a9d214e91 (diff)
iomap: Simplify is_partially_uptodate a little
Remove the unnecessary variable 'len' and fix a comment to refer to the folio instead of the page. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs')
-rw-r--r--fs/iomap/buffered-io.c9
1 files changed, 4 insertions, 5 deletions
diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c
index 49dccd9050f1..8ce8720093b9 100644
--- a/fs/iomap/buffered-io.c
+++ b/fs/iomap/buffered-io.c
@@ -435,18 +435,17 @@ bool iomap_is_partially_uptodate(struct folio *folio, size_t from, size_t count)
{
struct iomap_page *iop = to_iomap_page(folio);
struct inode *inode = folio->mapping->host;
- size_t len;
unsigned first, last, i;
if (!iop)
return false;
- /* Limit range to this folio */
- len = min(folio_size(folio) - from, count);
+ /* Caller's range may extend past the end of this folio */
+ count = min(folio_size(folio) - from, count);
- /* First and last blocks in range within page */
+ /* First and last blocks in range within folio */
first = from >> inode->i_blkbits;
- last = (from + len - 1) >> inode->i_blkbits;
+ last = (from + count - 1) >> inode->i_blkbits;
for (i = first; i <= last; i++)
if (!test_bit(i, iop->uptodate))