LU-354 test: Change dev_set_rdonly() check to warning

[fs/lustre-release.git] / lustre / kernel_patches / patches / dev_read_only-2.6.32-rhel6.patch

diff --git a/lustre/kernel_patches/patches/dev_read_only-2.6.32-rhel6.patch b/lustre/kernel_patches/patches/dev_read_only-2.6.32-rhel6.patch
index f6e7129..54b51cb 100644 (file)
--- a/lustre/kernel_patches/patches/dev_read_only-2.6.32-rhel6.patch
+++ b/lustre/kernel_patches/patches/dev_read_only-2.6.32-rhel6.patch
@@ -1,3 +1,8 @@
+This patch is no longer needed for Lustre.  It is only included
+for testing and ease of using the same kernel with older Lustre
+versions.  This testing functionality was replaced in Linux 3.0
+by the dm-flakey driver.
+
 This functionality is mainly used during testing, in order to
 simulate a server crash for ldiskfs by discarding all of the
 writes to the filesystem.  For recovery testing we could simulate
@@ -14,9 +19,6 @@ a DMU-based target is not safe as it could trigger a storage
 failure if the data is ever read from disk again and the
 checksum does not match that expected by the block pointer.
 
-Initial efforts to remove this patch are under way in bug 20776.
-Once this work comes to fruition this patch can be dropped.
-
 Index: linux-2.6.32-131.0.15.el6.x86_64/block/blk-core.c
 ===================================================================
 --- linux-2.6.32-131.0.15.el6.x86_64.orig/block/blk-core.c     2011-05-10 21:38:33.000000000 +0300
@@ -30,29 +32,20 @@ Index: linux-2.6.32-131.0.15.el6.x86_64/block/blk-core.c
  /*
   * Check whether this bio extends beyond the end of the device.
   */
-@@ -1517,6 +1519,21 @@ static inline void __generic_make_reques
+@@ -1517,6 +1519,12 @@ static inline void __generic_make_reques
                if (unlikely(test_bit(QUEUE_FLAG_DEAD, &q->queue_flags)))
                        goto end_io;
  
-+               /* this is cfs's dev_rdonly check */
-+               if (bio_rw(bio) == WRITE && dev_check_rdonly(bio->bi_bdev)) {
-+                       struct block_device *bdev = bio->bi_bdev;
-+
-+                       printk(KERN_WARNING "Write to readonly device %s (%#x) "
-+                              "bi_flags: %lx, bi_vcnt: %d, bi_idx: %d, "
-+                              "bi->size: %d, bi_cnt: %d, bi_private: %p\n",
-+                              bdev->bd_disk ? bdev->bd_disk->disk_name : "",
-+                              bdev->bd_dev, bio->bi_flags, bio->bi_vcnt,
-+                              bio->bi_idx, bio->bi_size,
-+                              atomic_read(&bio->bi_cnt), bio->bi_private);
-+                       err = 0;
-+                       goto end_io;
-+               }
++              /* this is cfs's dev_rdonly check */
++              if (bio_rw(bio) == WRITE && dev_check_rdonly(bio->bi_bdev)) {
++                      err = 0;
++                      goto end_io;
++              }
 +
                if (should_fail_request(bio))
                        goto end_io;
  
-@@ -2628,6 +2647,99 @@ int kblockd_schedule_work(struct request
+@@ -2619,6 +2638,99 @@ int kblockd_schedule_work(struct request
  }
  EXPORT_SYMBOL(kblockd_schedule_work);