diff options
Diffstat (limited to 'fs/fuse/dev.c')
| -rw-r--r-- | fs/fuse/dev.c | 24 |
1 files changed, 17 insertions, 7 deletions
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c index dde341a6388a..79f7eda49e06 100644 --- a/fs/fuse/dev.c +++ b/fs/fuse/dev.c @@ -756,7 +756,7 @@ static int fuse_copy_do(struct fuse_copy_state *cs, void **val, unsigned *size) { unsigned ncpy = min(*size, cs->len); if (val) { - void *pgaddr = kmap_atomic(cs->pg); + void *pgaddr = kmap_local_page(cs->pg); void *buf = pgaddr + cs->offset; if (cs->write) @@ -764,7 +764,7 @@ static int fuse_copy_do(struct fuse_copy_state *cs, void **val, unsigned *size) else memcpy(*val, buf, ncpy); - kunmap_atomic(pgaddr); + kunmap_local(pgaddr); *val += ncpy; } *size -= ncpy; @@ -847,6 +847,12 @@ static int fuse_try_move_page(struct fuse_copy_state *cs, struct page **pagep) replace_page_cache_page(oldpage, newpage); + /* + * Release while we have extra ref on stolen page. Otherwise + * anon_pipe_buf_release() might think the page can be reused. + */ + pipe_buf_release(cs->pipe, buf); + get_page(newpage); if (!(buf->flags & PIPE_BUF_FLAG_LRU)) @@ -949,10 +955,10 @@ static int fuse_copy_page(struct fuse_copy_state *cs, struct page **pagep, } } if (page) { - void *mapaddr = kmap_atomic(page); + void *mapaddr = kmap_local_page(page); void *buf = mapaddr + offset; offset += fuse_copy_do(cs, &buf, &count); - kunmap_atomic(mapaddr); + kunmap_local(mapaddr); } else offset += fuse_copy_do(cs, NULL, &count); } @@ -1591,7 +1597,7 @@ static int fuse_notify_store(struct fuse_conn *fc, unsigned int size, end = outarg.offset + outarg.size; if (end > file_size) { file_size = end; - fuse_write_update_size(inode, file_size); + fuse_write_update_attr(inode, file_size, outarg.size); } num = outarg.size; @@ -2031,8 +2037,12 @@ static ssize_t fuse_dev_splice_write(struct pipe_inode_info *pipe, pipe_lock(pipe); out_free: - for (idx = 0; idx < nbuf; idx++) - pipe_buf_release(pipe, &bufs[idx]); + for (idx = 0; idx < nbuf; idx++) { + struct pipe_buffer *buf = &bufs[idx]; + + if (buf->ops) + pipe_buf_release(pipe, buf); + } pipe_unlock(pipe); kvfree(bufs); |