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remarkable-linux/fs
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NeilBrown 4a30131e7d [PATCH] Fix some problems with truncate and mtime semantics. 
SUS requires that when truncating a file to the size that it currently
is:
  truncate and ftruncate should NOT modify ctime or mtime
  O_TRUNC SHOULD modify ctime and mtime.

Currently mtime and ctime are always modified on most local
filesystems (side effect of ->truncate) or never modified (on NFS).

With this patch:
  ATTR_CTIME|ATTR_MTIME are sent with ATTR_SIZE precisely when
    an update of these times is required whether size changes or not
    (via a new argument to do_truncate).  This allows NFS to do
    the right thing for O_TRUNC.
  inode_setattr nolonger forces ATTR_MTIME|ATTR_CTIME when the ATTR_SIZE
    sets the size to it's current value.  This allows local filesystems
    to do the right thing for f?truncate.

Also, the logic in inode_setattr is changed a bit so there are two return
points.  One returns the error from vmtruncate if it failed, the other
returns 0 (there can be no other failure).

Finally, if vmtruncate succeeds, and ATTR_SIZE is the only change
requested, we now fall-through and mark_inode_dirty.  If a filesystem did
not have a ->truncate function, then vmtruncate will have changed i_size,
without marking the inode as 'dirty', and I think this is wrong.

Signed-off-by: Neil Brown <neilb@suse.de>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-08 20:13:52 -08:00
..
9p [PATCH] Fix and add EXPORT_SYMBOL(filemap_write_and_wait) 2006-01-08 20:13:47 -08:00
adfs [PATCH] changing CONFIG_LOCALVERSION rebuilds too much, for no good reason 2005-11-09 07:55:57 -08:00
affs [PATCH] kfree cleanup: fs 2005-11-07 07:54:06 -08:00
afs fs/afs/callback.c should #include "cmservice.h" 2005-11-08 16:56:17 +01:00
autofs [PATCH] kfree cleanup: fs 2005-11-07 07:54:06 -08:00
autofs4 [PATCH] kfree cleanup: fs 2005-11-07 07:54:06 -08:00
befs remove unused fs/befs/attribute.c 2005-11-08 16:54:53 +01:00
bfs
cifs [PATCH] Fix and add EXPORT_SYMBOL(filemap_write_and_wait) 2006-01-08 20:13:47 -08:00
coda [PATCH] Driver Core: fix up all callers of class_device_create() 2005-10-28 09:52:52 -07:00
configfs [PATCH] configfs: User-driven configuration filesystem 2006-01-03 11:45:28 -08:00
cramfs
debugfs
devfs [PATCH] kfree cleanup: fs 2005-11-07 07:54:06 -08:00
devpts
efs
exportfs
ext2 [PATCH] ext2: remove duplicate newlines in ext2_fill_super 2005-11-13 18:14:17 -08:00
ext3 [PATCH] ext3: Wrong return value for EXT3_IOC_GROUP_ADD 2005-11-28 14:42:24 -08:00
fat [PATCH] fat: support a truncate() for expanding size (generic_cont_expand) 2006-01-08 20:13:47 -08:00
freevxfs fs/freevxfs/: add #include's 2005-11-08 16:47:45 +01:00
fuse [PATCH] fuse: check file type in lookup 2006-01-06 08:33:56 -08:00
hfs [PATCH] changing CONFIG_LOCALVERSION rebuilds too much, for no good reason 2005-11-09 07:55:57 -08:00
hfsplus [PATCH] hfsplus oops fix 2006-01-06 08:33:20 -08:00
hostfs [PATCH] uml: hostfs - fix possible PAGE_CACHE_SHIFT overflows 2005-12-29 09:48:15 -08:00
hpfs [PATCH] hpfs: remove spurious mtime update 2005-11-09 07:55:57 -08:00
hppfs
hugetlbfs [PATCH] Hugetlb: Copy on Write support 2006-01-06 08:33:23 -08:00
isofs [PATCH] kfree cleanup: fs 2005-11-07 07:54:06 -08:00
jbd [PATCH] jbd: split checkpoint lists 2006-01-06 08:33:59 -08:00
jffs jffs_fm.c should #include "intrep.h" 2005-11-08 16:48:36 +01:00
jffs2 [JFFS2] Fix the slab cache constructor of 'struct jffs2_inode_info' objects. 2005-11-29 16:57:17 +01:00
jfs [PATCH] Fix and add EXPORT_SYMBOL(filemap_write_and_wait) 2006-01-08 20:13:47 -08:00
lockd SUNRPC: get rid of cl_chatty 2006-01-06 14:58:56 -05:00
minix
msdos [PATCH] fat: remove the unneeded vfat_find() in vfat_rename() 2005-10-30 17:37:32 -08:00
ncpfs [PATCH] add a file_permission helper 2005-11-09 07:55:59 -08:00
nfs [PATCH] Fix and add EXPORT_SYMBOL(filemap_write_and_wait) 2006-01-08 20:13:47 -08:00
nfs_common
nfsd SUNRPC: get rid of cl_chatty 2006-01-06 14:58:56 -05:00
nls
ntfs update the email address of Randy Dunlap 2006-01-03 13:37:51 +01:00
ocfs2 [PATCH] This patch contains the following cleanups: 2006-01-03 11:45:55 -08:00
openpromfs [PATCH] kfree cleanup: fs 2005-11-07 07:54:06 -08:00
partitions [PATCH] s390: cleanup Kconfig 2006-01-06 08:33:53 -08:00
proc [PATCH] slob: introduce the SLOB allocator 2006-01-08 20:13:41 -08:00
qnx4 fs/qnx4/bitmap.c: #if 0 qnx4_new_block() 2006-01-03 13:21:37 +01:00
ramfs [PATCH] NOMMU: Provide shared-writable mmap support on ramfs 2006-01-06 08:33:32 -08:00
reiserfs s/retreiv/retriev/g 2006-01-03 13:27:11 +01:00
relayfs [PATCH] relayfs: cleanup, change relayfs_file_* to relay_file_* 2006-01-08 20:13:51 -08:00
romfs
smbfs [PATCH] Fix and add EXPORT_SYMBOL(filemap_write_and_wait) 2006-01-08 20:13:47 -08:00
sysfs [PATCH] sysfs: handle failures in sysfs_make_dirent 2006-01-04 16:18:09 -08:00
sysv
udf [PATCH] udf: remove bogus inode == NULL check in inode_bmap 2006-01-08 20:13:51 -08:00
ufs [PATCH] fs/ufs: debug mode compilation failure 2006-01-06 15:22:28 -08:00
vfat [PATCH] fat: remove the unneeded vfat_find() in vfat_rename() 2005-10-30 17:37:32 -08:00
xfs [PATCH] Fix and add EXPORT_SYMBOL(filemap_write_and_wait) 2006-01-08 20:13:47 -08:00
aio.c [PATCH] rcu file: use atomic primitives 2006-01-08 20:13:48 -08:00
attr.c [PATCH] Fix some problems with truncate and mtime semantics. 2006-01-08 20:13:52 -08:00
bad_inode.c
binfmt_aout.c [PATCH] mm: mm_init set_mm_counters 2005-10-29 21:40:38 -07:00
binfmt_elf.c [PATCH] kfree cleanup: fs 2005-11-07 07:54:06 -08:00
binfmt_elf_fdpic.c [PATCH] kfree cleanup: fs 2005-11-07 07:54:06 -08:00
binfmt_em86.c
binfmt_flat.c [PATCH] mm: mm_init set_mm_counters 2005-10-29 21:40:38 -07:00
binfmt_misc.c [PATCH] add a file_permission helper 2005-11-09 07:55:59 -08:00
binfmt_script.c
binfmt_som.c [PATCH] mm: mm_init set_mm_counters 2005-10-29 21:40:38 -07:00
bio.c [BLOCK] bio: check for same page merge possibilities in __bio_add_page() 2006-01-06 09:43:28 +01:00
block_dev.c
buffer.c [PATCH] Fix and add EXPORT_SYMBOL(filemap_write_and_wait) 2006-01-08 20:13:47 -08:00
char_dev.c
compat.c Relax the rw_verify_area() error checking. 2006-01-04 16:20:40 -08:00
compat_ioctl.c [COMPAT] net: SIOCGIFCONF data corruption 2005-11-20 13:41:59 -08:00
dcache.c [PATCH] Remove hlist_for_each_rcu() API, convert existing use to hlist_for_each_entry_rcu 2005-11-07 07:53:35 -08:00
dcookies.c
direct-io.c [PATCH] core remove PageReserved 2005-10-29 21:40:39 -07:00
dnotify.c
dquot.c [PATCH] Fix oops in vfs_quotaon_mount() 2005-11-28 14:42:26 -08:00
drop_caches.c [PATCH] drop-pagecache 2006-01-08 20:12:40 -08:00
eventpoll.c
exec.c [PATCH] Fix some problems with truncate and mtime semantics. 2006-01-08 20:13:52 -08:00
fcntl.c
fifo.c
file.c
file_table.c [PATCH] rcu file: use atomic primitives 2006-01-08 20:13:48 -08:00
filesystems.c [PATCH] fix missing includes 2005-10-30 17:37:32 -08:00
fs-writeback.c [PATCH] kernel-docs: fix kernel-doc format problems 2005-11-07 07:53:55 -08:00
inode.c [PATCH] fix nr_unused accounting, and avoid recursing in iput with I_WILL_FREE set 2005-10-30 17:37:26 -08:00
inotify.c [PATCH] inotify: add two inotify_add_watch flags 2005-12-12 08:57:43 -08:00
ioctl.c
ioprio.c fs/ioprio.c should #include <linux/syscalls.h> 2005-11-08 16:57:02 +01:00
Kconfig [PATCH] o Update Kconfig documentation to reflect support for readonly mounts. 2006-01-03 11:45:57 -08:00
Kconfig.binfmt [PATCH] frv: suppress configuration of certain features for FRV 2006-01-08 20:13:36 -08:00
libfs.c
locks.c NLM: Further cancel fixes 2006-01-06 14:58:54 -05:00
Makefile [PATCH] drop-pagecache 2006-01-08 20:12:40 -08:00
mbcache.c [PATCH] kfree cleanup: fs 2005-11-07 07:54:06 -08:00
mpage.c [PATCH] add AOP_TRUNCATED_PAGE, prepend AOP_ to WRITEPAGE_ACTIVATE 2006-01-03 11:45:42 -08:00
namei.c [PATCH] Fix some problems with truncate and mtime semantics. 2006-01-08 20:13:52 -08:00
namespace.c [PATCH] add a vfs_permission helper 2005-11-09 07:55:58 -08:00
nfsctl.c
open.c [PATCH] Fix some problems with truncate and mtime semantics. 2006-01-08 20:13:52 -08:00
pipe.c
pnode.c [PATCH] unbindable mounts 2005-11-07 18:18:11 -08:00
pnode.h [PATCH] unbindable mounts 2005-11-07 18:18:11 -08:00
posix_acl.c
quota.c [PATCH] quota: small cleanups 2005-11-07 07:53:39 -08:00
quota_v1.c
quota_v2.c
read_write.c Relax the rw_verify_area() error checking. 2006-01-04 16:20:40 -08:00
readdir.c
select.c
seq_file.c [PATCH] allow callers of seq_open do allocation themselves 2005-11-07 18:18:09 -08:00
stat.c
super.c [PATCH] remove mount/umount uevents from superblock handling 2006-01-04 16:18:07 -08:00
xattr.c [PATCH] Fix listxattr() for generic security attributes 2005-12-12 08:57:42 -08:00
xattr_acl.c