diff options
| -rw-r--r-- | mm/filemap.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/mm/filemap.c b/mm/filemap.c index 380776c2a9a..f9a29c87a2c 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -1243,12 +1243,15 @@ generic_file_aio_read(struct kiocb *iocb, const struct iovec *iov, unsigned long seg = 0; size_t count; loff_t *ppos = &iocb->ki_pos; + struct blk_plug plug; count = 0; retval = generic_segment_checks(iov, &nr_segs, &count, VERIFY_WRITE); if (retval) return retval; + blk_start_plug(&plug); + /* coalesce the iovecs and go direct-to-BIO for O_DIRECT */ if (filp->f_flags & O_DIRECT) { loff_t size; @@ -1321,6 +1324,7 @@ generic_file_aio_read(struct kiocb *iocb, const struct iovec *iov, break; } out: + blk_finish_plug(&plug); return retval; } EXPORT_SYMBOL(generic_file_aio_read); @@ -2432,11 +2436,13 @@ ssize_t generic_file_aio_write(struct kiocb *iocb, const struct iovec *iov, { struct file *file = iocb->ki_filp; struct inode *inode = file->f_mapping->host; + struct blk_plug plug; ssize_t ret; BUG_ON(iocb->ki_pos != pos); mutex_lock(&inode->i_mutex); + blk_start_plug(&plug); ret = __generic_file_aio_write(iocb, iov, nr_segs, &iocb->ki_pos); mutex_unlock(&inode->i_mutex); @@ -2447,6 +2453,7 @@ ssize_t generic_file_aio_write(struct kiocb *iocb, const struct iovec *iov, if (err < 0 && ret > 0) ret = err; } + blk_finish_plug(&plug); return ret; } EXPORT_SYMBOL(generic_file_aio_write); |