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Diffstat (limited to 'fs/iomap/buffered-io.c')
-rw-r--r--fs/iomap/buffered-io.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c
index e25901ae3ff4..181ee8477aad 100644
--- a/fs/iomap/buffered-io.c
+++ b/fs/iomap/buffered-io.c
@@ -203,6 +203,14 @@ iomap_read_inline_data(struct inode *inode, struct page *page,
SetPageUptodate(page);
}
+static inline bool iomap_block_needs_zeroing(struct inode *inode,
+ struct iomap *iomap, loff_t pos)
+{
+ return iomap->type != IOMAP_MAPPED ||
+ (iomap->flags & IOMAP_F_NEW) ||
+ pos >= i_size_read(inode);
+}
+
static loff_t
iomap_readpage_actor(struct inode *inode, loff_t pos, loff_t length, void *data,
struct iomap *iomap)
@@ -226,7 +234,7 @@ iomap_readpage_actor(struct inode *inode, loff_t pos, loff_t length, void *data,
if (plen == 0)
goto done;
- if (iomap->type != IOMAP_MAPPED || pos >= i_size_read(inode)) {
+ if (iomap_block_needs_zeroing(inode, iomap, pos)) {
zero_user(page, poff, plen);
iomap_set_range_uptodate(page, poff, plen);
goto done;
@@ -532,7 +540,7 @@ iomap_read_page_sync(struct inode *inode, loff_t block_start, struct page *page,
struct bio_vec bvec;
struct bio bio;
- if (iomap->type != IOMAP_MAPPED || block_start >= i_size_read(inode)) {
+ if (iomap_block_needs_zeroing(inode, iomap, block_start)) {
zero_user_segments(page, poff, from, to, poff + plen);
iomap_set_range_uptodate(page, poff, plen);
return 0;