[PATCH 12/26] NTFS 2.1.22 - Bug and race fixes and improved error handling.

From: Anton Altaparmakov
Date: Wed Nov 10 2004 - 09:09:58 EST

This is patch 12/26 in the series. It contains the following ChangeSet:

<aia21@xxxxxxxxxx> (04/10/29 1.2026.37.1)
NTFS: Remove unused function fs/ntfs/runlist.c::ntfs_rl_merge(). (Adrian Bunk)

Signed-off-by: Adrian Bunk <bunk@xxxxxxxxx>
Signed-off-by: Anton Altaparmakov <aia21@xxxxxxxxxx>

Best regards,

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/ChangeLog b/fs/ntfs/ChangeLog
--- a/fs/ntfs/ChangeLog 2004-11-10 13:45:01 +00:00
+++ b/fs/ntfs/ChangeLog 2004-11-10 13:45:01 +00:00
@@ -12,6 +12,10 @@
OTOH, perhaps i_sem, which is held accross generic_file_write is
sufficient for synchronisation here. We then just need to make sure
ntfs_readpage/writepage/truncate interoperate properly with us.
+ UPDATE: The above is all ok as it is due to i_sem held. The only
+ thing that needs to be checked is ntfs_writepage() which does not
+ hold i_sem. It cannot change i_size but it needs to cope with a
+ concurrent i_size change.
- Implement mft.c::sync_mft_mirror_umount(). We currently will just
leave the volume dirty on umount if the final iput(vol->mft_ino)
causes a write of any mirrored mft records due to the mft mirror
@@ -42,7 +46,7 @@
mount time as this cannot work with the current implementation.
- Check for location of attribute name and improve error handling in
general in fs/ntfs/inode.c::ntfs_read_locked_inode() and friends.
- - In fs/ntfs/aops.c::ntfs_writepage(), if t he page is fully outside
+ - In fs/ntfs/aops.c::ntfs_writepage(), if the page is fully outside
i_size, i.e. race with truncate, invalidate the buffers on the page
so that they become freeable and hence the page does not leak.
- Implement extension of resident files in the regular file write code
@@ -50,6 +54,8 @@
this only works until the data attribute becomes too big for the mft
record after which we abort the write returning -EOPNOTSUPP from
+ - Remove unused function fs/ntfs/runlist.c::ntfs_rl_merge(). (Adrian
+ Bunk)

2.1.21 - Fix some races and bugs, rewrite mft write code, add mft allocator.

diff -Nru a/fs/ntfs/runlist.c b/fs/ntfs/runlist.c
--- a/fs/ntfs/runlist.c 2004-11-10 13:45:01 +00:00
+++ b/fs/ntfs/runlist.c 2004-11-10 13:45:01 +00:00
@@ -140,30 +140,6 @@

- * ntfs_rl_merge - test if two runlists can be joined together and merge them
- * @dst: original, destination runlist
- * @src: new runlist to merge with @dst
- *
- * Test if two runlists can be joined together. For this, their VCNs and LCNs
- * must be adjacent. If they can be merged, perform the merge, writing into
- * the destination runlist @dst.
- *
- * It is up to the caller to serialize access to the runlists @dst and @src.
- *
- * Return: TRUE Success, the runlists have been merged.
- * FALSE Failure, the runlists cannot be merged and have not been
- * modified.
- */
-static inline BOOL ntfs_rl_merge(runlist_element *dst, runlist_element *src)
- BOOL merge = ntfs_are_rl_mergeable(dst, src);
- if (merge)
- __ntfs_rl_merge(dst, src);
- return merge;
* ntfs_rl_append - append a runlist after a given element
* @dst: original runlist to be worked on
* @dsize: number of elements in @dst (including end marker)
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