diff options
Diffstat (limited to 'fs/gfs2/aops.c')
| -rw-r--r-- | fs/gfs2/aops.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c index 0c1d0b82dcf..a739a0a4806 100644 --- a/fs/gfs2/aops.c +++ b/fs/gfs2/aops.c @@ -418,6 +418,7 @@ static int gfs2_jdata_writepages(struct address_space *mapping, static int stuffed_readpage(struct gfs2_inode *ip, struct page *page) { struct buffer_head *dibh; + u64 dsize = i_size_read(&ip->i_inode); void *kaddr; int error; @@ -437,9 +438,10 @@ static int stuffed_readpage(struct gfs2_inode *ip, struct page *page) return error; kaddr = kmap_atomic(page, KM_USER0); - memcpy(kaddr, dibh->b_data + sizeof(struct gfs2_dinode), - ip->i_disksize); - memset(kaddr + ip->i_disksize, 0, PAGE_CACHE_SIZE - ip->i_disksize); + if (dsize > (dibh->b_size - sizeof(struct gfs2_dinode))) + dsize = (dibh->b_size - sizeof(struct gfs2_dinode)); + memcpy(kaddr, dibh->b_data + sizeof(struct gfs2_dinode), dsize); + memset(kaddr + dsize, 0, PAGE_CACHE_SIZE - dsize); kunmap_atomic(kaddr, KM_USER0); flush_dcache_page(page); brelse(dibh); |