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-rw-r--r--fs/block_dev.c11
1 files changed, 5 insertions, 6 deletions
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 333a7bb4cb9c..4fb8a3431531 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -1215,12 +1215,6 @@ int blkdev_get(struct block_device *bdev, fmode_t mode, void *holder)
1215 1215
1216 res = __blkdev_get(bdev, mode, 0); 1216 res = __blkdev_get(bdev, mode, 0);
1217 1217
1218 /* __blkdev_get() may alter read only status, check it afterwards */
1219 if (!res && (mode & FMODE_WRITE) && bdev_read_only(bdev)) {
1220 __blkdev_put(bdev, mode, 0);
1221 res = -EACCES;
1222 }
1223
1224 if (whole) { 1218 if (whole) {
1225 /* finish claiming */ 1219 /* finish claiming */
1226 mutex_lock(&bdev->bd_mutex); 1220 mutex_lock(&bdev->bd_mutex);
@@ -1298,6 +1292,11 @@ struct block_device *blkdev_get_by_path(const char *path, fmode_t mode,
1298 if (err) 1292 if (err)
1299 return ERR_PTR(err); 1293 return ERR_PTR(err);
1300 1294
1295 if ((mode & FMODE_WRITE) && bdev_read_only(bdev)) {
1296 blkdev_put(bdev, mode);
1297 return ERR_PTR(-EACCES);
1298 }
1299
1301 return bdev; 1300 return bdev;
1302} 1301}
1303EXPORT_SYMBOL(blkdev_get_by_path); 1302EXPORT_SYMBOL(blkdev_get_by_path);