diff options
Diffstat (limited to 'fs/btrfs/extent_io.c')
| -rw-r--r-- | fs/btrfs/extent_io.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 03ca3ab95898..a83d7019ede9 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -2477,11 +2477,12 @@ static void end_bio_extent_readpage(struct bio *bio, int err) struct extent_state *cached = NULL; struct extent_state *state; struct btrfs_io_bio *io_bio = btrfs_io_bio(bio); + struct inode *inode = page->mapping->host; pr_debug("end_bio_extent_readpage: bi_sector=%llu, err=%d, " "mirror=%lu\n", (u64)bio->bi_sector, err, io_bio->mirror_num); - tree = &BTRFS_I(page->mapping->host)->io_tree; + tree = &BTRFS_I(inode)->io_tree; /* We always issue full-page reads, but if some block * in a page fails to read, blk_update_request() will @@ -2555,6 +2556,14 @@ static void end_bio_extent_readpage(struct bio *bio, int err) unlock_extent_cached(tree, start, end, &cached, GFP_ATOMIC); if (uptodate) { + loff_t i_size = i_size_read(inode); + pgoff_t end_index = i_size >> PAGE_CACHE_SHIFT; + unsigned offset; + + /* Zero out the end if this page straddles i_size */ + offset = i_size & (PAGE_CACHE_SIZE-1); + if (page->index == end_index && offset) + zero_user_segment(page, offset, PAGE_CACHE_SIZE); SetPageUptodate(page); } else { ClearPageUptodate(page); |