diff options
Diffstat (limited to 'fs/aio.c')
| -rw-r--r-- | fs/aio.c | 18 |
1 files changed, 11 insertions, 7 deletions
@@ -101,7 +101,7 @@ static int aio_setup_ring(struct kioctx *ctx) struct aio_ring *ring; struct aio_ring_info *info = &ctx->ring_info; unsigned nr_events = ctx->max_reqs; - unsigned long size; + unsigned long size, populate; int nr_pages; /* Compensate for the ring buffer's head/tail overlap entry */ @@ -129,7 +129,8 @@ static int aio_setup_ring(struct kioctx *ctx) down_write(&ctx->mm->mmap_sem); info->mmap_base = do_mmap_pgoff(NULL, 0, info->mmap_size, PROT_READ|PROT_WRITE, - MAP_ANONYMOUS|MAP_PRIVATE, 0); + MAP_ANONYMOUS|MAP_PRIVATE, 0, + &populate); if (IS_ERR((void *)info->mmap_base)) { up_write(&ctx->mm->mmap_sem); info->mmap_size = 0; @@ -147,6 +148,8 @@ static int aio_setup_ring(struct kioctx *ctx) aio_free_ring(ctx); return -EAGAIN; } + if (populate) + mm_populate(info->mmap_base, populate); ctx->user_id = info->mmap_base; @@ -588,11 +591,10 @@ static struct kioctx *lookup_ioctx(unsigned long ctx_id) { struct mm_struct *mm = current->mm; struct kioctx *ctx, *ret = NULL; - struct hlist_node *n; rcu_read_lock(); - hlist_for_each_entry_rcu(ctx, n, &mm->ioctx_list, list) { + hlist_for_each_entry_rcu(ctx, &mm->ioctx_list, list) { /* * RCU protects us against accessing freed memory but * we have to be careful not to get a reference when the @@ -1027,9 +1029,9 @@ static int aio_read_evt(struct kioctx *ioctx, struct io_event *ent) spin_unlock(&info->ring_lock); out: - kunmap_atomic(ring); dprintk("leaving aio_read_evt: %d h%lu t%lu\n", ret, (unsigned long)ring->head, (unsigned long)ring->tail); + kunmap_atomic(ring); return ret; } @@ -1322,6 +1324,8 @@ static ssize_t aio_rw_vect_retry(struct kiocb *iocb) if (iocb->ki_pos < 0) return -EINVAL; + if (opcode == IOCB_CMD_PWRITEV) + file_start_write(file); do { ret = rw_op(iocb, &iocb->ki_iovec[iocb->ki_cur_seg], iocb->ki_nr_segs - iocb->ki_cur_seg, @@ -1334,6 +1338,8 @@ static ssize_t aio_rw_vect_retry(struct kiocb *iocb) } while (ret > 0 && iocb->ki_left > 0 && (opcode == IOCB_CMD_PWRITEV || (!S_ISFIFO(inode->i_mode) && !S_ISSOCK(inode->i_mode)))); + if (opcode == IOCB_CMD_PWRITEV) + file_end_write(file); /* This means we must have transferred all that we could */ /* No need to retry anymore */ @@ -1788,7 +1794,5 @@ SYSCALL_DEFINE5(io_getevents, aio_context_t, ctx_id, ret = read_events(ioctx, min_nr, nr, events, timeout); put_ioctx(ioctx); } - - asmlinkage_protect(5, ret, ctx_id, min_nr, nr, events, timeout); return ret; } |