diff options
Diffstat (limited to 'fs/gfs2/meta_io.h')
| -rw-r--r-- | fs/gfs2/meta_io.h | 23 |
1 files changed, 4 insertions, 19 deletions
diff --git a/fs/gfs2/meta_io.h b/fs/gfs2/meta_io.h index 23c6a596fd9e..951814e86272 100644 --- a/fs/gfs2/meta_io.h +++ b/fs/gfs2/meta_io.h @@ -17,35 +17,20 @@ static inline void gfs2_buffer_clear(struct buffer_head *bh) static inline void gfs2_buffer_clear_tail(struct buffer_head *bh, int head) { + BUG_ON(head > bh->b_size); memset(bh->b_data + head, 0, bh->b_size - head); } -static inline void gfs2_buffer_clear_ends(struct buffer_head *bh, int offset, - int amount, int journaled) -{ - int z_off1 = (journaled) ? sizeof(struct gfs2_meta_header) : 0; - int z_len1 = offset - z_off1; - int z_off2 = offset + amount; - int z_len2 = (bh)->b_size - z_off2; - - if (z_len1) - memset(bh->b_data + z_off1, 0, z_len1); - - if (z_len2) - memset(bh->b_data + z_off2, 0, z_len2); -} - static inline void gfs2_buffer_copy_tail(struct buffer_head *to_bh, int to_head, struct buffer_head *from_bh, int from_head) { - memcpy(to_bh->b_data + to_head, - from_bh->b_data + from_head, + BUG_ON(from_head < to_head); + memcpy(to_bh->b_data + to_head, from_bh->b_data + from_head, from_bh->b_size - from_head); memset(to_bh->b_data + to_bh->b_size + to_head - from_head, - 0, - from_head - to_head); + 0, from_head - to_head); } struct inode *gfs2_aspace_get(struct gfs2_sbd *sdp); |