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Merge branch 'for-2.6.37/barrier' of git://git.kernel.dk/linux-2.6-block

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* 'for-2.6.37/barrier' of git://git.kernel.dk/linux-2.6-block: (46 commits)
  xen-blkfront: disable barrier/flush write support
  Added blk-lib.c and blk-barrier.c was renamed to blk-flush.c
  block: remove BLKDEV_IFL_WAIT
  aic7xxx_old: removed unused 'req' variable
  block: remove the BH_Eopnotsupp flag
  block: remove the BLKDEV_IFL_BARRIER flag
  block: remove the WRITE_BARRIER flag
  swap: do not send discards as barriers
  fat: do not send discards as barriers
  ext4: do not send discards as barriers
  jbd2: replace barriers with explicit flush / FUA usage
  jbd2: Modify ASYNC_COMMIT code to not rely on queue draining on barrier
  jbd: replace barriers with explicit flush / FUA usage
  nilfs2: replace barriers with explicit flush / FUA usage
  reiserfs: replace barriers with explicit flush / FUA usage
  gfs2: replace barriers with explicit flush / FUA usage
  btrfs: replace barriers with explicit flush / FUA usage
  xfs: replace barriers with explicit flush / FUA usage
  block: pass gfp_mask and flags to sb_issue_discard
  dm: convey that all flushes are processed as empty
  ...
This commit is contained in:
Linus Torvalds 2010-10-22 17:07:18 -07:00
commit a2887097f2
80 changed files with 845 additions and 1921 deletions
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4
block/ioctl.c
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@ -116,7 +116,7 @@ static int blkdev_reread_part(struct block_device *bdev)
static int blk_ioctl_discard(struct block_device *bdev, uint64_t start,
uint64_t len, int secure)
{
unsigned long flags = BLKDEV_IFL_WAIT;
unsigned long flags = 0;
if (start & 511)
return -EINVAL;
@ -128,7 +128,7 @@ static int blk_ioctl_discard(struct block_device *bdev, uint64_t start,
if (start + len > (bdev->bd_inode->i_size >> 9))
return -EINVAL;
if (secure)
flags |= BLKDEV_IFL_SECURE;
flags |= BLKDEV_DISCARD_SECURE;
return blkdev_issue_discard(bdev, start, len, GFP_KERNEL, flags);
}