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Subject[PATCH 16/20] Re: [2.6-BK-URL] NTFS 2.1.17 release
This is patch 16/20 in the series.  It contains the following ChangeSet:

<aia21@cantab.net> (04/08/17 1.1822)
NTFS: Fix fs/ntfs/lcnalloc.c::ntfs_cluster_alloc() to use LCN_RL_NOT_MAPPED
rather than LCN_ENOENT as runlist terminator. Also, make it not create a
LCN_RL_NOT_MAPPED element at the beginning.

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

Best regards,

Anton
--
Anton Altaparmakov <aia21 at cam.ac.uk> (replace at with @)
Unix Support, Computing Service, University of Cambridge, CB2 3QH, UK
Linux NTFS maintainer / IRC: #ntfs on irc.freenode.net
WWW: http://linux-ntfs.sf.net/, http://www-stu.christs.cam.ac.uk/~aia21/

===================================================================
diff -Nru a/fs/ntfs/lcnalloc.c b/fs/ntfs/lcnalloc.c
--- a/fs/ntfs/lcnalloc.c 2004-08-18 20:50:37 +01:00
+++ b/fs/ntfs/lcnalloc.c 2004-08-18 20:50:37 +01:00
@@ -167,16 +167,9 @@
rl = ntfs_malloc_nofs(PAGE_SIZE);
if (!rl)
return ERR_PTR(-ENOMEM);
- rlpos = 0;
- if (start_vcn) {
- rl[0].vcn = 0;
- rl[0].lcn = LCN_RL_NOT_MAPPED;
- rl[0].length = start_vcn;
- rlpos++;
- }
- rl[rlpos].vcn = start_vcn;
- rl[rlpos].lcn = LCN_ENOENT;
- rl[rlpos].length = 0;
+ rl[0].vcn = start_vcn;
+ rl[0].lcn = LCN_RL_NOT_MAPPED;
+ rl[0].length = 0;
return rl;
}
/* Take the lcnbmp lock for writing. */
@@ -405,14 +398,7 @@
} else {
ntfs_debug("Adding new run, is first "
"run.");
- rl[rlpos].vcn = 0;
- if (start_vcn) {
- rl[rlpos].lcn =
- LCN_RL_NOT_MAPPED;
- rl[rlpos].length = start_vcn;
- rlpos++;
- rl[rlpos].vcn = start_vcn;
- }
+ rl[rlpos].vcn = start_vcn;
}
rl[rlpos].lcn = prev_lcn = lcn + bmp_pos;
rl[rlpos].length = prev_run_len = 1;
@@ -746,7 +732,7 @@
/* Add runlist terminator element. */
if (likely(rl)) {
rl[rlpos].vcn = rl[rlpos - 1].vcn + rl[rlpos - 1].length;
- rl[rlpos].lcn = LCN_ENOENT;
+ rl[rlpos].lcn = LCN_RL_NOT_MAPPED;
rl[rlpos].length = 0;
}
if (likely(page && !IS_ERR(page))) {
-
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