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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
index 0933881..54b51cb 100644 (file)
@@ -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
@@ -14,14 +19,11 @@ 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-2.6.32-71.18.1.el6-master/block/blk-core.c
+Index: linux-2.6.32-131.0.15.el6.x86_64/block/blk-core.c
 ===================================================================
---- linux-2.6.32-71.18.1.el6-master.orig/block/blk-core.c      2011-03-05 11:35:40.404043293 +0800
-+++ linux-2.6.32-71.18.1.el6-master/block/blk-core.c   2011-03-11 20:21:10.492302510 +0800
-@@ -1405,6 +1405,8 @@
+--- linux-2.6.32-131.0.15.el6.x86_64.orig/block/blk-core.c     2011-05-10 21:38:33.000000000 +0300
++++ linux-2.6.32-131.0.15.el6.x86_64/block/blk-core.c  2011-05-19 21:01:04.000000000 +0300
+@@ -1416,6 +1416,8 @@ static inline int should_fail_request(st
  
  #endif /* CONFIG_FAIL_MAKE_REQUEST */
  
@@ -30,31 +32,20 @@ Index: linux-2.6.32-71.18.1.el6-master/block/blk-core.c
  /*
   * Check whether this bio extends beyond the end of the device.
   */
-@@ -1506,6 +1508,23 @@
+@@ -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);
-+                       set_bit(BIO_RDONLY, &bio->bi_flags);
-+                       bio_endio(bio, 0);
-+                       clear_bit(BIO_RDONLY, &bio->bi_flags);
-+                       break;
-+               }
++              /* 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;
  
-@@ -2578,6 +2586,99 @@
+@@ -2619,6 +2638,99 @@ int kblockd_schedule_work(struct request
  }
  EXPORT_SYMBOL(kblockd_schedule_work);
  
@@ -154,11 +145,11 @@ Index: linux-2.6.32-71.18.1.el6-master/block/blk-core.c
  int __init blk_dev_init(void)
  {
        BUILD_BUG_ON(__REQ_NR_BITS > 8 *
-Index: linux-2.6.32-71.18.1.el6-master/fs/block_dev.c
+Index: linux-2.6.32-131.0.15.el6.x86_64/fs/block_dev.c
 ===================================================================
---- linux-2.6.32-71.18.1.el6-master.orig/fs/block_dev.c        2011-03-05 11:35:40.486042782 +0800
-+++ linux-2.6.32-71.18.1.el6-master/fs/block_dev.c     2011-03-05 11:37:35.624324775 +0800
-@@ -1389,6 +1389,7 @@
+--- linux-2.6.32-131.0.15.el6.x86_64.orig/fs/block_dev.c       2011-05-10 21:38:29.000000000 +0300
++++ linux-2.6.32-131.0.15.el6.x86_64/fs/block_dev.c    2011-05-19 21:01:04.000000000 +0300
+@@ -1389,6 +1389,7 @@ static int __blkdev_put(struct block_dev
                if (bdev != bdev->bd_contains)
                        victim = bdev->bd_contains;
                bdev->bd_contains = NULL;
@@ -166,11 +157,11 @@ Index: linux-2.6.32-71.18.1.el6-master/fs/block_dev.c
        }
        unlock_kernel();
        mutex_unlock(&bdev->bd_mutex);
-Index: linux-2.6.32-71.18.1.el6-master/include/linux/fs.h
+Index: linux-2.6.32-131.0.15.el6.x86_64/include/linux/fs.h
 ===================================================================
---- linux-2.6.32-71.18.1.el6-master.orig/include/linux/fs.h    2011-03-05 11:35:40.445043037 +0800
-+++ linux-2.6.32-71.18.1.el6-master/include/linux/fs.h 2011-03-05 11:37:35.726324137 +0800
-@@ -2204,6 +2204,10 @@
+--- linux-2.6.32-131.0.15.el6.x86_64.orig/include/linux/fs.h   2011-05-10 21:38:29.000000000 +0300
++++ linux-2.6.32-131.0.15.el6.x86_64/include/linux/fs.h        2011-05-19 21:01:04.000000000 +0300
+@@ -2244,6 +2244,10 @@ struct bio;
  extern void submit_bio(int, struct bio *);
  extern int bdev_read_only(struct block_device *);
  #endif
@@ -181,15 +172,3 @@ Index: linux-2.6.32-71.18.1.el6-master/include/linux/fs.h
  extern int set_blocksize(struct block_device *, int);
  extern int sb_set_blocksize(struct super_block *, int);
  extern int sb_min_blocksize(struct super_block *, int);
-Index: linux+rh+chaos/include/linux/bio.h
-===================================================================
---- linux+rh+chaos.orig/include/linux/bio.h
-+++ linux+rh+chaos/include/linux/bio.h
-@@ -126,6 +126,7 @@ struct bio {
- #define BIO_NULL_MAPPED 9     /* contains invalid user pages */
- #define BIO_FS_INTEGRITY 10   /* fs owns integrity data, not block layer */
- #define BIO_QUIET     11      /* Make BIO Quiet */
-+#define BIO_RDONLY    31      /* device is readonly */
- #define bio_flagged(bio, flag)        ((bio)->bi_flags & (1 << (flag)))
- /*