[PATCH] Kill PF_SYNCWRITE flag
[linux-3.10.git] / fs / direct-io.c
index b05d1b218776946f4448ba2d0fd51cee477730cf..538fb0418fbab7aba852cc298b5a9ded054935f2 100644 (file)
@@ -162,7 +162,7 @@ static int dio_refill_pages(struct dio *dio)
                NULL);                          /* vmas */
        up_read(&current->mm->mmap_sem);
 
-       if (ret < 0 && dio->blocks_available && (dio->rw == WRITE)) {
+       if (ret < 0 && dio->blocks_available && (dio->rw & WRITE)) {
                struct page *page = ZERO_PAGE(dio->curr_user_address);
                /*
                 * A memory fault, but the filesystem has some outstanding
@@ -535,7 +535,7 @@ static int get_more_blocks(struct dio *dio)
                map_bh->b_state = 0;
                map_bh->b_size = fs_count << dio->inode->i_blkbits;
 
-               create = dio->rw == WRITE;
+               create = dio->rw & WRITE;
                if (dio->lock_type == DIO_LOCKING) {
                        if (dio->block_in_file < (i_size_read(dio->inode) >>
                                                        dio->blkbits))
@@ -867,7 +867,7 @@ do_holes:
                                loff_t i_size_aligned;
 
                                /* AKPM: eargh, -ENOTBLK is a hack */
-                               if (dio->rw == WRITE) {
+                               if (dio->rw & WRITE) {
                                        page_cache_release(page);
                                        return -ENOTBLK;
                                }
@@ -1045,7 +1045,7 @@ direct_io_worker(int rw, struct kiocb *iocb, struct inode *inode,
                }
        } /* end iovec loop */
 
-       if (ret == -ENOTBLK && rw == WRITE) {
+       if (ret == -ENOTBLK && (rw & WRITE)) {
                /*
                 * The remaining part of the request will be
                 * be handled by buffered I/O when we return
@@ -1089,7 +1089,7 @@ direct_io_worker(int rw, struct kiocb *iocb, struct inode *inode,
        if (dio->is_async) {
                int should_wait = 0;
 
-               if (dio->result < dio->size && rw == WRITE) {
+               if (dio->result < dio->size && (rw & WRITE)) {
                        dio->waiter = current;
                        should_wait = 1;
                }
@@ -1142,7 +1142,7 @@ direct_io_worker(int rw, struct kiocb *iocb, struct inode *inode,
                        ret = transferred;
 
                /* We could have also come here on an AIO file extend */
-               if (!is_sync_kiocb(iocb) && rw == WRITE &&
+               if (!is_sync_kiocb(iocb) && (rw & WRITE) &&
                    ret >= 0 && dio->result == dio->size)
                        /*
                         * For AIO writes where we have completed the
@@ -1194,7 +1194,7 @@ __blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode,
        int acquire_i_mutex = 0;
 
        if (rw & WRITE)
-               current->flags |= PF_SYNCWRITE;
+               rw = WRITE_SYNC;
 
        if (bdev)
                bdev_blkbits = blksize_bits(bdev_hardsect_size(bdev));
@@ -1270,7 +1270,7 @@ __blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode,
         * even for AIO, we need to wait for i/o to complete before
         * returning in this case.
         */
-       dio->is_async = !is_sync_kiocb(iocb) && !((rw == WRITE) &&
+       dio->is_async = !is_sync_kiocb(iocb) && !((rw & WRITE) &&
                (end > i_size_read(inode)));
 
        retval = direct_io_worker(rw, iocb, inode, iov, offset,
@@ -1284,8 +1284,6 @@ out:
                mutex_unlock(&inode->i_mutex);
        else if (acquire_i_mutex)
                mutex_lock(&inode->i_mutex);
-       if (rw & WRITE)
-               current->flags &= ~PF_SYNCWRITE;
        return retval;
 }
 EXPORT_SYMBOL(__blockdev_direct_IO);