1. 09 Sep, 2008 3 commits
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  5. 09 Oct, 2008 1 commit
    • Aneesh Kumar K.V's avatar
      ext4: Make sure all the block allocation paths reserve blocks · a30d542a
      Aneesh Kumar K.V authored
      With delayed allocation we need to make sure block are reserved before
      we attempt to allocate them. Otherwise we get block allocation failure
      (ENOSPC) during writepages which cannot be handled. This would mean
      silent data loss (We do a printk stating data will be lost). This patch
      updates the DIO and fallocate code path to do block reservation before
      block allocation. This is needed to make sure parallel DIO and fallocate
      request doesn't take block out of delayed reserve space.
      
      When free blocks count go below a threshold we switch to a slow patch
      which looks at other CPU's accumulated percpu counter values.
      Signed-off-by: default avatarAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
      Signed-off-by: default avatar"Theodore Ts'o" <tytso@mit.edu>
      a30d542a
  6. 20 Aug, 2008 1 commit
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