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NTFS: writev() fix and maintenance/contact details update

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Fix writev() to not keep writing the first segment over and over again
instead of moving onto subsequent segments and update the NTFS entry in
MAINTAINERS to reflect that Tuxera Inc. now supports the NTFS driver.

Signed-off-by: Anton Altaparmakov <anton@tuxera.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Anton Altaparmakov 2011-01-12 10:34:35 +00:00 committed by Linus Torvalds
parent 4162cf6497
commit 2818ef50c4
5 changed files with 27 additions and 25 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
Documentation/filesystems/ntfs.txt
View File

@ -457,6 +457,9 @@ ChangeLog
Note, a technical ChangeLog aimed at kernel hackers is in fs/ntfs/ChangeLog.
2.1.30:
- Fix writev() (it kept writing the first segment over and over again
instead of moving onto subsequent segments).
2.1.29:
- Fix a deadlock when mounting read-write.
2.1.28:

6
MAINTAINERS
View File

@ -4383,11 +4383,11 @@ F: Documentation/scsi/NinjaSCSI.txt
F: drivers/scsi/nsp32*
NTFS FILESYSTEM
M: Anton Altaparmakov <aia21@cantab.net>
M: Anton Altaparmakov <anton@tuxera.com>
L: linux-ntfs-dev@lists.sourceforge.net
W: http://www.linux-ntfs.org/
W: http://www.tuxera.com/
T: git git://git.kernel.org/pub/scm/linux/kernel/git/aia21/ntfs-2.6.git
S: Maintained
S: Supported
F: Documentation/filesystems/ntfs.txt
F: fs/ntfs/

2
fs/ntfs/Makefile
View File

@ -6,7 +6,7 @@ ntfs-objs := aops.o attrib.o collate.o compress.o debug.o dir.o file.o \
index.o inode.o mft.o mst.o namei.o runlist.o super.o sysctl.o \
unistr.o upcase.o
EXTRA_CFLAGS = -DNTFS_VERSION=\"2.1.29\"
EXTRA_CFLAGS = -DNTFS_VERSION=\"2.1.30\"
ifeq ($(CONFIG_NTFS_DEBUG),y)
EXTRA_CFLAGS += -DDEBUG

35
fs/ntfs/file.c
View File

@ -1,7 +1,7 @@
/*
* file.c - NTFS kernel file operations. Part of the Linux-NTFS project.
*
* Copyright (c) 2001-2007 Anton Altaparmakov
* Copyright (c) 2001-2011 Anton Altaparmakov and Tuxera Inc.
*
* This program/include file is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as published
@ -1380,15 +1380,14 @@ static inline void ntfs_set_next_iovec(const struct iovec **iovp,
* pages (out to offset + bytes), to emulate ntfs_copy_from_user()'s
* single-segment behaviour.
*
* We call the same helper (__ntfs_copy_from_user_iovec_inatomic()) both
* when atomic and when not atomic. This is ok because
* __ntfs_copy_from_user_iovec_inatomic() calls __copy_from_user_inatomic()
* and it is ok to call this when non-atomic.
* Infact, the only difference between __copy_from_user_inatomic() and
* We call the same helper (__ntfs_copy_from_user_iovec_inatomic()) both when
* atomic and when not atomic. This is ok because it calls
* __copy_from_user_inatomic() and it is ok to call this when non-atomic. In
* fact, the only difference between __copy_from_user_inatomic() and
* __copy_from_user() is that the latter calls might_sleep() and the former
* should not zero the tail of the buffer on error. And on many
* architectures __copy_from_user_inatomic() is just defined to
* __copy_from_user() so it makes no difference at all on those architectures.
* should not zero the tail of the buffer on error. And on many architectures
* __copy_from_user_inatomic() is just defined to __copy_from_user() so it
* makes no difference at all on those architectures.
*/
static inline size_t ntfs_copy_from_user_iovec(struct page **pages,
unsigned nr_pages, unsigned ofs, const struct iovec **iov,
@ -1409,28 +1408,28 @@ static inline size_t ntfs_copy_from_user_iovec(struct page **pages,
if (unlikely(copied != len)) {
/* Do it the slow way. */
addr = kmap(*pages);
copied = __ntfs_copy_from_user_iovec_inatomic(addr + ofs,
*iov, *iov_ofs, len);
/*
* Zero the rest of the target like __copy_from_user().
*/
memset(addr + ofs + copied, 0, len - copied);
kunmap(*pages);
copied = __ntfs_copy_from_user_iovec_inatomic(addr +
ofs, *iov, *iov_ofs, len);
if (unlikely(copied != len))
goto err_out;
kunmap(*pages);
}
total += len;
ntfs_set_next_iovec(iov, iov_ofs, len);
bytes -= len;
if (!bytes)
break;
ntfs_set_next_iovec(iov, iov_ofs, len);
ofs = 0;
} while (++pages < last_page);
out:
return total;
err_out:
total += copied;
BUG_ON(copied > len);
/* Zero the rest of the target like __copy_from_user(). */
memset(addr + ofs + copied, 0, len - copied);
kunmap(*pages);
total += copied;
ntfs_set_next_iovec(iov, iov_ofs, copied);
while (++pages < last_page) {
bytes -= len;
if (!bytes)

6
fs/ntfs/super.c
View File

@ -1,7 +1,7 @@
/*
* super.c - NTFS kernel super block handling. Part of the Linux-NTFS project.
*
* Copyright (c) 2001-2007 Anton Altaparmakov
* Copyright (c) 2001-2011 Anton Altaparmakov and Tuxera Inc.
* Copyright (c) 2001,2002 Richard Russon
*
* This program/include file is free software; you can redistribute it and/or
@ -3193,8 +3193,8 @@ static void __exit exit_ntfs_fs(void)
ntfs_sysctl(0);
}
MODULE_AUTHOR("Anton Altaparmakov <aia21@cantab.net>");
MODULE_DESCRIPTION("NTFS 1.2/3.x driver - Copyright (c) 2001-2007 Anton Altaparmakov");
MODULE_AUTHOR("Anton Altaparmakov <anton@tuxera.com>");
MODULE_DESCRIPTION("NTFS 1.2/3.x driver - Copyright (c) 2001-2011 Anton Altaparmakov and Tuxera Inc.");
MODULE_VERSION(NTFS_VERSION);
MODULE_LICENSE("GPL");
#ifdef DEBUG