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NTFS: - Fix bug in fs/ntfs/attrib.c::ntfs_find_vcn_nolock() where after

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dropping the read lock and taking the write lock we were not checking
        whether someone else did not already do the work we wanted to do.
      - Rename ntfs_find_vcn_nolock() to ntfs_attr_find_vcn_nolock().
      - Tidy up some comments in fs/ntfs/runlist.c.
      - Add LCN_ENOMEM and LCN_EIO definitions to fs/ntfs/runlist.h.

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
This commit is contained in:
Anton Altaparmakov
2005-03-07 21:43:38 +00:00
parent 271849a988
commit c0c1cc0e46
7 changed files with 39 additions and 26 deletions
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fs/ntfs/runlist.c
+8 -7
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@@ -933,17 +933,18 @@ err_out:
*
* It is up to the caller to serialize access to the runlist @rl.
*
* Since lcns must be >= 0, we use negative return values with special meaning:
* Since lcns must be >= 0, we use negative return codes with special meaning:
*
* Return value Meaning / Description
* Return code Meaning / Description
* ==================================================
* -1 = LCN_HOLE Hole / not allocated on disk.
* -2 = LCN_RL_NOT_MAPPED This is part of the runlist which has not been
* inserted into the runlist yet.
* -3 = LCN_ENOENT There is no such vcn in the attribute.
* LCN_HOLE Hole / not allocated on disk.
* LCN_RL_NOT_MAPPED This is part of the runlist which has not been
* inserted into the runlist yet.
* LCN_ENOENT There is no such vcn in the attribute.
*
* Locking: - The caller must have locked the runlist (for reading or writing).
* - This function does not touch the lock.
* - This function does not touch the lock, nor does it modify the
* runlist.
*/
LCN ntfs_rl_vcn_to_lcn(const runlist_element *rl, const VCN vcn)
{