diff options
Diffstat (limited to 'fs/gfs2/aops.c')
| -rw-r--r-- | fs/gfs2/aops.c | 34 |
1 files changed, 16 insertions, 18 deletions
diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c index 98bc02f890d1..23fc474046fb 100644 --- a/fs/gfs2/aops.c +++ b/fs/gfs2/aops.c @@ -477,31 +477,29 @@ static int gfs2_read_folio(struct file *file, struct folio *folio) * */ -int gfs2_internal_read(struct gfs2_inode *ip, char *buf, loff_t *pos, - unsigned size) +ssize_t gfs2_internal_read(struct gfs2_inode *ip, char *buf, loff_t *pos, + size_t size) { struct address_space *mapping = ip->i_inode.i_mapping; unsigned long index = *pos >> PAGE_SHIFT; - unsigned offset = *pos & (PAGE_SIZE - 1); - unsigned copied = 0; - unsigned amt; - struct page *page; + size_t copied = 0; do { - page = read_cache_page(mapping, index, gfs2_read_folio, NULL); - if (IS_ERR(page)) { - if (PTR_ERR(page) == -EINTR) + size_t offset, chunk; + struct folio *folio; + + folio = read_cache_folio(mapping, index, gfs2_read_folio, NULL); + if (IS_ERR(folio)) { + if (PTR_ERR(folio) == -EINTR) continue; - return PTR_ERR(page); + return PTR_ERR(folio); } - amt = size - copied; - if (offset + size > PAGE_SIZE) - amt = PAGE_SIZE - offset; - memcpy_from_page(buf + copied, page, offset, amt); - put_page(page); - copied += amt; - index++; - offset = 0; + offset = *pos + copied - folio_pos(folio); + chunk = min(size - copied, folio_size(folio) - offset); + memcpy_from_folio(buf + copied, folio, offset, chunk); + index = folio_next_index(folio); + folio_put(folio); + copied += chunk; } while(copied < size); (*pos) += size; return size; |