diff options
Diffstat (limited to 'kernel/file.c')
| -rw-r--r-- | kernel/file.c | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/kernel/file.c b/kernel/file.c index 0a625a2..2d34e01 100644 --- a/kernel/file.c +++ b/kernel/file.c @@ -538,9 +538,6 @@ static int fuse_commit_write(struct file *file, struct page *page, if (is_bad_inode(inode)) return -EIO; - if (count > fc->max_write) - return -EIO; - req = fuse_get_request(fc); if (!req) return -EINTR; @@ -592,7 +589,7 @@ static int fuse_get_user_pages(struct fuse_req *req, const char __user *buf, nbytes = min(nbytes, (unsigned) FUSE_MAX_PAGES_PER_REQ << PAGE_SHIFT); npages = (nbytes + offset + PAGE_SIZE - 1) >> PAGE_SHIFT; - npages = min(npages, FUSE_MAX_PAGES_PER_REQ); + npages = min(max(npages, 1), FUSE_MAX_PAGES_PER_REQ); down_read(¤t->mm->mmap_sem); npages = get_user_pages(current, current->mm, user_addr, npages, write, 0, req->pages, NULL); @@ -623,7 +620,6 @@ static ssize_t fuse_direct_io(struct file *file, const char __user *buf, return -EINTR; while (count) { - size_t tmp; size_t nres; size_t nbytes = min(count, nmax); int err = fuse_get_user_pages(req, buf, nbytes, !write); @@ -631,8 +627,8 @@ static ssize_t fuse_direct_io(struct file *file, const char __user *buf, res = err; break; } - tmp = (req->num_pages << PAGE_SHIFT) - req->page_offset; - nbytes = min(nbytes, tmp); + nbytes = (req->num_pages << PAGE_SHIFT) - req->page_offset; + nbytes = min(count, nbytes); if (write) nres = fuse_send_write(req, file, inode, pos, nbytes); else |