diff options
| -rw-r--r-- | fs/buffer.c | 10 | ||||
| -rw-r--r-- | include/linux/genhd.h | 1 |
2 files changed, 10 insertions, 1 deletions
diff --git a/fs/buffer.c b/fs/buffer.c index 170df856bdb9..b96f3b98a6ef 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -3055,8 +3055,16 @@ void guard_bio_eod(int op, struct bio *bio) sector_t maxsector; struct bio_vec *bvec = &bio->bi_io_vec[bio->bi_vcnt - 1]; unsigned truncated_bytes; + struct hd_struct *part; + + rcu_read_lock(); + part = __disk_get_part(bio->bi_disk, bio->bi_partno); + if (part) + maxsector = part_nr_sects_read(part); + else + maxsector = get_capacity(bio->bi_disk); + rcu_read_unlock(); - maxsector = get_capacity(bio->bi_disk); if (!maxsector) return; diff --git a/include/linux/genhd.h b/include/linux/genhd.h index 44790523057f..5ade8f2a6987 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -243,6 +243,7 @@ static inline dev_t part_devt(struct hd_struct *part) return part_to_dev(part)->devt; } +extern struct hd_struct *__disk_get_part(struct gendisk *disk, int partno); extern struct hd_struct *disk_get_part(struct gendisk *disk, int partno); static inline void disk_put_part(struct hd_struct *part) |