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d63b70902befe189ba2672925f28ec3f4db41352
linux/fs
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Evgeniy Dushistov d63b70902b [PATCH] fix garbage instead of zeroes in UFS 
Looks like this is the problem, which point Al Viro some time ago:

ufs's get_block callback allocates 16k of disk at a time, and links that
entire 16k into the file's metadata.  But because get_block is called for only
a single buffer_head (a 2k buffer_head in this case?) we are only able to tell
the VFS that this 2k is buffer_new().

So when ufs_getfrag_block() is later called to map some more data in the file,
and when that data resides within the remaining 14k of this fragment,
ufs_getfrag_block() will incorrectly return a !buffer_new() buffer_head.

I don't see _right_ way to do nullification of whole block, if use inode
page cache, some pages may be outside of inode limits (inode size), and
will be lost; if use blockdev page cache it is possible to zero real data,
if later inode page cache will be used.

The simpliest way, as can I see usage of block device page cache, but not only
mark dirty, but also sync it during "nullification".  I use my simple tests
collection, which I used for check that create,open,write,read,close works on
ufs, and I see that this patch makes ufs code 18% slower then before.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2007-01-05 23:55:29 -08:00
..
9p
[PATCH] 9p: change uses of f_{dentry,vfsmnt} to use f_path
2006-12-08 08:28:43 -08:00
adfs
[PATCH] adfs: fix filename handling
2007-01-05 23:55:22 -08:00
affs
[PATCH] affs: change uses of f_{dentry, vfsmnt} to use f_path
2006-12-08 08:28:43 -08:00
afs
[PATCH] rename struct namespace to struct mnt_namespace
2006-12-08 08:28:51 -08:00
autofs
[PATCH] autofs: change uses of f_{dentry, vfsmnt} to use f_path
2006-12-08 08:28:43 -08:00
autofs4
[PATCH] getting rid of all casts of k[cmz]alloc() calls
2006-12-13 09:05:58 -08:00
befs
[PATCH] getting rid of all casts of k[cmz]alloc() calls
2006-12-13 09:05:58 -08:00
bfs
[PATCH] update Tigran's email addresses
2006-12-13 09:05:53 -08:00
cifs
Fix up CIFS for "test_clear_page_dirty()" removal
2006-12-23 16:19:07 -08:00
coda
[PATCH] struct path: convert coda
2006-12-08 08:28:44 -08:00
configfs
[PATCH] configfs: change uses of f_{dentry, vfsmnt} to use f_path
2006-12-08 08:28:43 -08:00
cramfs
[PATCH] struct path: convert cramfs
2006-12-08 08:28:44 -08:00
debugfs
DebugFS : file/directory removal fix
2006-12-13 15:38:45 -08:00
devpts
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
dlm
[DLM] fix compile warning
2006-12-15 12:51:22 -05:00
ecryptfs
[PATCH] ecryptfs: change uses of f_{dentry, vfsmnt} to use f_path
2006-12-08 08:28:43 -08:00
efs
[PATCH] struct path: convert efs
2006-12-08 08:28:45 -08:00
exportfs
[PATCH] VFS: Make filldir_t and struct kstat deal in 64-bit inode numbers
2006-10-03 08:03:40 -07:00
ext2
[PATCH] LOG2: Implement a general integer log2 facility in the kernel
2006-12-08 08:28:51 -08:00
ext3
[PATCH] LOG2: Implement a general integer log2 facility in the kernel
2006-12-08 08:28:51 -08:00
ext4
[PATCH] ext4: change uses of f_{dentry, vfsmnt} to use f_path
2006-12-08 08:28:41 -08:00
fat
[PATCH] fat: change uses of f_{dentry,vfsmnt} to use f_path
2006-12-08 08:28:41 -08:00
freevxfs
[PATCH] struct path: convert freevxfs
2006-12-08 08:28:45 -08:00
fuse
[PATCH] fuse: remove clear_page_dirty() call
2006-12-21 09:25:08 -08:00
gfs2
[GFS2] Fix Kconfig
2006-12-15 12:51:51 -05:00
hfs
[PATCH] struct path: convert hfs
2006-12-08 08:28:45 -08:00
hfsplus
[PATCH] struct path: convert hfsplus
2006-12-08 08:28:45 -08:00
hostfs
[PATCH] struct path: convert hostfs
2006-12-08 08:28:45 -08:00
hpfs
[PATCH] struct path: convert hpfs
2006-12-08 08:28:45 -08:00
hppfs
[PATCH] struct path: convert hppfs
2006-12-08 08:28:45 -08:00
hugetlbfs
VM: Remove "clear_page_dirty()" and "test_clear_page_dirty()" functions
2006-12-21 09:19:57 -08:00
isofs
[PATCH] isofs: change uses of f_{dentry, vfsmnt} to use f_path
2006-12-08 08:28:41 -08:00
jbd
[PATCH] jbd: wait for already submitted t_sync_datalist buffer to complete
2006-12-22 08:55:51 -08:00
jbd2
[PATCH] jbd2: wait for already submitted t_sync_datalist buffer to complete
2006-12-07 08:39:42 -08:00
jffs
[PATCH] getting rid of all casts of k[cmz]alloc() calls
2006-12-13 09:05:58 -08:00
jffs2
[PATCH] struct path: convert jffs2
2006-12-08 08:28:46 -08:00
jfs
[PATCH] Fix JFS after clear_page_dirty() removal
2006-12-21 09:24:03 -08:00
lockd
[PATCH] getting rid of all casts of k[cmz]alloc() calls
2006-12-13 09:05:58 -08:00
minix
[PATCH] struct path: convert minix
2006-12-08 08:28:47 -08:00
msdos
[PATCH] fat: add fat_getattr()
2006-11-16 11:43:38 -08:00
ncpfs
[PATCH] ncpfs: ensure we free wdog_pid on parse_option or fill_inode failure
2006-12-13 09:05:53 -08:00
nfs
[PATCH] getting rid of all casts of k[cmz]alloc() calls
2006-12-13 09:05:58 -08:00
nfs_common
[PATCH] nfs_common endianness annotations
2006-10-20 10:26:41 -07:00
nfsd
[PATCH] knfsd: Fix up some bit-rot in exp_export
2006-12-13 09:05:54 -08:00
nls
[PATCH] fs: make nls_cp936.c handle some U00XY characters and U20AC correctly
2006-12-07 08:39:46 -08:00
ntfs
[PATCH] ntfs: change uses of f_{dentry, vfsmnt} to use f_path
2006-12-08 08:28:42 -08:00
ocfs2
ocfs2: export heartbeat thread pid via configfs
2006-12-28 16:40:32 -08:00
openpromfs
[PATCH] struct path: convert openpromfs
2006-12-08 08:28:48 -08:00
partitions
[MIPS] Rename SNI_RM200_PCI to just SNI_RM preparing for more RM machines
2006-12-09 01:03:58 +00:00
proc
Make SLES9 "get_kernel_version" work on the kernel binary again
2006-12-11 11:34:11 -08:00
qnx4
[PATCH] struct path: convert qnx4
2006-12-08 08:28:48 -08:00
ramfs
[PATCH] ramfs breaks without CONFIG_BLOCK
2006-12-30 10:56:42 -08:00
reiserfs
Fix reiserfs after "test_clear_page_dirty()" removal
2006-12-23 09:32:45 -08:00
romfs
[PATCH] struct path: convert romfs
2006-12-08 08:28:49 -08:00
smbfs
[PATCH] smbfs: Make conn_pid a struct pid
2006-12-13 09:05:53 -08:00
sysfs
[PATCH] sysfs: change uses of f_{dentry, vfsmnt} to use f_path
2006-12-08 08:28:41 -08:00
sysv
[PATCH] fs/sysv/: proper prototypes for 2 functions
2006-12-22 08:55:47 -08:00
udf
[PATCH] struct path: convert udf
2006-12-08 08:28:50 -08:00
ufs
[PATCH] fix garbage instead of zeroes in UFS
2007-01-05 23:55:29 -08:00
vfat
[PATCH] fat: add fat_getattr()
2006-11-16 11:43:38 -08:00
xfs
[PATCH] Fix XFS after clear_page_dirty() removal
2006-12-21 10:01:08 -08:00
aio.c
[PATCH] Fix lock inversion aio_kick_handler()
2006-12-30 10:55:54 -08:00
attr.c
[PATCH] capable/capability.h (fs/)
2006-01-11 18:42:13 -08:00
bad_inode.c
[PATCH] fix memory corruption from misinterpreted bad_inode_ops return values
2007-01-05 23:55:23 -08:00
binfmt_aout.c
[PATCH] VFS: change struct file to use struct path
2006-12-08 08:28:41 -08:00
binfmt_elf_fdpic.c
fs: Convert kmalloc() + memset() to kzalloc() in fs/.
2006-12-12 20:07:35 +01:00
binfmt_elf.c
[PATCH] add process_session() helper routine
2006-12-08 08:28:51 -08:00
binfmt_em86.c
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
binfmt_flat.c
[PATCH] VFS: change struct file to use struct path
2006-12-08 08:28:41 -08:00
binfmt_misc.c
[PATCH] getting rid of all casts of k[cmz]alloc() calls
2006-12-13 09:05:58 -08:00
binfmt_script.c
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
binfmt_som.c
[PARISC] Fix fs/binfmt_som.c
2006-10-04 06:51:26 -06:00
bio.c
[PATCH] optimize o_direct on block devices
2006-12-13 09:05:50 -08:00
block_dev.c
[PATCH] optimize o_direct on block devices
2006-12-13 09:05:50 -08:00
buffer.c
Clean up and make try_to_free_buffers() not race with dirty pages
2006-12-21 09:04:31 -08:00
char_dev.c
[PATCH] BLOCK: Move extern declarations out of fs/*.c into header files [try #6]
2006-09-30 20:52:18 +02:00
compat_ioctl.c
[PATCH] VFS: change struct file to use struct path
2006-12-08 08:28:41 -08:00
compat.c
[PATCH] fdtable: Make fdarray and fdsets equal in size
2006-12-10 09:57:22 -08:00
dcache.c
[PATCH] dcache: avoid RCU for never-hashed dentries
2006-12-07 08:39:41 -08:00
dcookies.c
[PATCH] slab: remove kmem_cache_t
2006-12-07 08:39:25 -08:00
direct-io.c
[PATCH] dio: lock refcount operations
2006-12-10 09:57:21 -08:00
dnotify.c
[PATCH] VFS: change struct file to use struct path
2006-12-08 08:28:41 -08:00
dquot.c
[PATCH] VFS: change struct file to use struct path
2006-12-08 08:28:41 -08:00
drop_caches.c
[PATCH] drop-pagecache
2006-01-08 20:12:40 -08:00
eventpoll.c
[PATCH] VFS: change struct file to use struct path
2006-12-08 08:28:41 -08:00
exec.c
[PATCH] fdtable: Make fdarray and fdsets equal in size
2006-12-10 09:57:22 -08:00
fcntl.c
[PATCH] fdtable: Make fdarray and fdsets equal in size
2006-12-10 09:57:22 -08:00
fifo.c
[PATCH] pipe.c/fifo.c code cleanups
2006-04-11 13:53:33 +02:00
file_table.c
[PATCH] VFS: change struct file to use struct path
2006-12-08 08:28:41 -08:00
file.c
[PATCH] fdtable: Provide free_fdtable() wrapper
2006-12-22 08:55:50 -08:00
filesystems.c
[PATCH] Ban register_filesystem(NULL);
2006-09-29 09:18:20 -07:00
fs-writeback.c
[PATCH] BLOCK: Remove dependence on existence of blockdev_superblock [try #6]
2006-09-30 20:52:26 +02:00
generic_acl.c
[PATCH] Generic infrastructure for acls
2006-09-29 09:18:24 -07:00
inode.c
[PATCH] relative atime
2006-12-13 09:05:50 -08:00
inotify_user.c
[PATCH] VFS: change struct file to use struct path
2006-12-08 08:28:41 -08:00
inotify.c
[PATCH] severing fs.h, radix-tree.h -> sched.h
2006-12-04 02:00:24 -05:00
internal.h
[PATCH] CONFIG_BLOCK internal.h cleanups
2006-09-30 20:52:32 +02:00
ioctl.c
[PATCH] VFS: change struct file to use struct path
2006-12-08 08:28:41 -08:00
ioprio.c
[PATCH] block layer: ioprio_best function fix
2006-10-12 15:09:51 +02:00
Kconfig
[PATCH] Make JFFS depend on CONFIG_BROKEN
2006-12-22 08:55:48 -08:00
Kconfig.binfmt
[PATCH] frv: suppress configuration of certain features for FRV
2006-01-08 20:13:36 -08:00
libfs.c
[PATCH] VFS: change struct file to use struct path
2006-12-08 08:28:41 -08:00
locks.c
[PATCH] VFS: change struct file to use struct path
2006-12-08 08:28:41 -08:00
Makefile
[PATCH] fsstack: Introduce fsstack_copy_{attr,inode}_*
2006-12-08 08:28:40 -08:00
mbcache.c
[PATCH] slab: remove kmem_cache_t
2006-12-07 08:39:25 -08:00
mpage.c
[PATCH] BLOCK: Dissociate generic_writepages() from mpage stuff [try #6]
2006-09-30 20:52:26 +02:00
namei.c
[PATCH] VFS: change struct file to use struct path
2006-12-08 08:28:41 -08:00
namespace.c
[PATCH] relative atime
2006-12-13 09:05:50 -08:00
nfsctl.c
Remove obsolete #include <linux/config.h>
2006-06-30 19:25:36 +02:00
no-block.c
[PATCH] BLOCK: Make it possible to disable the block layer [try #6]
2006-09-30 20:52:31 +02:00
open.c
[PATCH] fdtable: Make fdarray and fdsets equal in size
2006-12-10 09:57:22 -08:00
pipe.c
[PATCH] fix leaks on pipe(2) failure exits
2006-12-21 00:16:03 -08:00
pnode.c
[PATCH] rename struct namespace to struct mnt_namespace
2006-12-08 08:28:51 -08:00
pnode.h
[PATCH] rename struct namespace to struct mnt_namespace
2006-12-08 08:28:51 -08:00
posix_acl.c
[PATCH] kmemdup: some users
2006-10-01 00:39:19 -07:00
quota_v1.c
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
quota_v2.c
[PATCH] sem2mutex: quota
2006-03-23 07:38:11 -08:00
quota.c
[PATCH] BLOCK: Make it possible to disable the block layer [try #6]
2006-09-30 20:52:31 +02:00
read_write.c
[PATCH] one more EXPORT_UNUSED_SYMBOL removal
2006-12-13 09:05:53 -08:00
read_write.h
[PATCH] Remove readv/writev methods and use aio_read/aio_write instead
2006-10-01 00:39:28 -07:00
readdir.c
[PATCH] VFS: change struct file to use struct path
2006-12-08 08:28:41 -08:00
select.c
[PATCH] fdtable: Make fdarray and fdsets equal in size
2006-12-10 09:57:22 -08:00
seq_file.c
[PATCH] VFS: change struct file to use struct path
2006-12-08 08:28:41 -08:00
splice.c
[PATCH] constify pipe_buf_operations
2006-12-13 09:05:47 -08:00
stack.c
[PATCH] fsstack: Remove inode copy
2006-12-22 08:55:48 -08:00
stat.c
[PATCH] VFS: change struct file to use struct path
2006-12-08 08:28:41 -08:00
super.c
[PATCH] VFS: change struct file to use struct path
2006-12-08 08:28:41 -08:00
sync.c
[PATCH] VFS: change struct file to use struct path
2006-12-08 08:28:41 -08:00
utimes.c
[PATCH] severing fs.h, radix-tree.h -> sched.h
2006-12-04 02:00:24 -05:00
xattr_acl.c
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
xattr.c
[PATCH] VFS: change struct file to use struct path
2006-12-08 08:28:41 -08:00