24 Jun, 2015
1 commit
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list_entry is just a wrapper for container_of, but it is arguably
wrong (and slightly confusing) to use it when the pointed-to struct
member is not a struct list_head. Use container_of directly instead.Signed-off-by: Rasmus Villemoes
Signed-off-by: Al Viro
21 Sep, 2012
1 commit
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- General routine uid/gid conversion work
- When storing posix acls treat ACL_USER and ACL_GROUP separately
so I can call from_kuid or from_kgid as appropriate.
- When reading posix acls treat ACL_USER and ACL_GROUP separately
so I can call make_kuid or make_kgid as appropriate.Cc: David Woodhouse
Signed-off-by: Eric W. Biederman
31 May, 2012
1 commit
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Currently JFFS2 file-system maps the VFS "superblock" abstraction to the
write-buffer. Namely, it uses VFS services to synchronize the write-buffer
periodically.The whole "superblock write-out" VFS infrastructure is served by the
'sync_supers()' kernel thread, which wakes up every 5 (by default) seconds and
writes out all dirty superblock using the '->write_super()' call-back. But the
problem with this thread is that it wastes power by waking up the system every
5 seconds no matter what. So we want to kill it completely and thus, we need to
make file-systems to stop using the '->write_super' VFS service, and then
remove it together with the kernel thread.This patch switches the JFFS2 write-buffer management from
'->write_super()'/'->s_dirt' to a delayed work. Instead of setting the 's_dirt'
flag we just schedule a delayed work for synchronizing the write-buffer.Signed-off-by: Artem Bityutskiy
Signed-off-by: Al Viro
27 Mar, 2012
1 commit
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There were a few instances of the old MTD interface remaining for JFFS2. We
fix one error that shows up (only when CONFIG_JFFS2_FS_WRITEBUFFER is not
defined) like this:fs/jffs2/read.c: In function 'jffs2_read_dnode':
fs/jffs2/read.c:36:8: error: 'struct mtd_info' has no member named 'read'
fs/jffs2/read.c:112:8: error: 'struct mtd_info' has no member named 'read'
...We also simply remove two macros that are not in use, were not updated to
the new MTD interface, and don't even utilize the old interface properly.
(That means they weren't used since commit 8593fbc6, year 2006; almost 6
years ago, for those who don't want to do the math)Reported-by: Randy Dunlap
Signed-off-by: Brian Norris
Acked-by: Randy Dunlap
Signed-off-by: Artem Bityutskiy
Signed-off-by: David Woodhouse
19 Oct, 2011
1 commit
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Currently jffs2 has compile-time constants (and .config options)
controlling whether or not the various compression/decompression
drivers are built in and enabled. This is fine for embedded
systems, but it clashes with distribution kernels. Distro kernels
tend to turn on everything; this causes OpenFirmware to fall
over, as it understands ZLIB-compressed inodes. Booting a kernel
that has LZO compression enabled, writing to the boot partition,
and then rebooting causes OFW to fail to read the kernel from
the filesystem. This is because LZO compression has priority
when writing new data to jffs2, if LZO is enabled.This patch adds mount option parsing, and a single supported
option ("compr=none"). This adds the flexibility of being
able to specify which compressor overrides on a per-superblock
basis. For now, we can simply disable compression;
additional flexibility coming soon.v2: kill some printks, and implement show_options as suggested
by Artem Bityutskiy.Signed-off-by: Andres Salomon
Signed-off-by: Artem Bityutskiy
01 Aug, 2011
1 commit
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so we can pass &inode->i_mode to it
Signed-off-by: Al Viro
24 Jul, 2011
1 commit
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casting int * to mode_t * is not a good thing - on a *lot* of big-endian
architectures mode_t happens to be smaller than int and there it breaks
quite spectaculary...Fucked-up-by: commit cfc8dc6f6f69ede939e09c2af06a01adee577285
Signed-off-by: Al Viro
21 Jul, 2011
1 commit
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Btrfs needs to be able to control how filemap_write_and_wait_range() is called
in fsync to make it less of a painful operation, so push down taking i_mutex and
the calling of filemap_write_and_wait() down into the ->fsync() handlers. Some
file systems can drop taking the i_mutex altogether it seems, like ext3 and
ocfs2. For correctness sake I just pushed everything down in all cases to make
sure that we keep the current behavior the same for everybody, and then each
individual fs maintainer can make up their mind about what to do from there.
Thanks,Acked-by: Jan Kara
Signed-off-by: Josef Bacik
Signed-off-by: Al Viro
27 May, 2011
1 commit
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Tell the filesystem if we just updated timestamp (I_DIRTY_SYNC) or
anything else, so that the filesystem can track internally if it
needs to push out a transaction for fdatasync or not.This is just the prototype change with no user for it yet. I plan
to push large XFS changes for the next merge window, and getting
this trivial infrastructure in this window would help a lot to avoid
tree interdependencies.Also remove incorrect comments that ->dirty_inode can't block. That
has been changed a long time ago, and many implementations rely on it.Signed-off-by: Christoph Hellwig
Signed-off-by: Al Viro
10 Aug, 2010
1 commit
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Signed-off-by: Al Viro
28 May, 2010
1 commit
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Signed-off-by: Christoph Hellwig
Signed-off-by: Al Viro
20 May, 2010
1 commit
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Now that we do erases from GC and trigger the GC thread to do them
instead of using kupdated, this function is misnamed. It's only used
for triggering wbuf flush on NAND flash now. Rename it accordingly.Signed-off-by: Joakim Tjernlund
Signed-off-by: David Woodhouse
24 Jun, 2009
1 commit
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Signed-off-by: Al Viro
12 Jun, 2009
1 commit
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jffs2_write_super is only called from super.c and doesn't use any
functionality from fs.c. So move it over to super.c and make it
static there.[should go in through the vfs tree as it is a requirement for the
next patch]Signed-off-by: Christoph Hellwig
Signed-off-by: Al Viro
12 Jul, 2008
1 commit
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This changes the .ioctl to the .unlocked_ioctl version.
Signed-off-by: Stoyan Gaydarov
Signed-off-by: David Woodhouse
02 May, 2008
1 commit
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We don't actually care about nlink; we only care whether the inode in
question is unlinked or not.Signed-off-by: David Woodhouse
08 Feb, 2008
1 commit
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Stop the JFFS2 filesystem from using iget() and read_inode(). Replace
jffs2_read_inode() with jffs2_iget(), and call that instead of iget().
jffs2_iget() then uses iget_locked() directly and returns a proper error code
instead of an inode in the event of an error.jffs2_do_fill_super() returns any error incurred when getting the root inode
instead of EINVAL.Signed-off-by: David Howells
Cc: David Woodhouse
Acked-by: Christoph Hellwig
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
20 Oct, 2007
1 commit
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[In commit 9ed437c50d89eabae763dd422579f73fdebf288d we fixed a problem
with standard permissions on newly-created inodes, when POSIX ACLs are
enabled. This cleans it up...]The attached patch separate jffs2_init_acl() into two parts.
The one is jffs2_init_acl_pre() called from jffs2_new_inode().
It compute ACL oriented inode->i_mode bits, and allocate in-memory ACL
objects associated with the new inode just before when inode meta
infomation is written to the medium.The other is jffs2_init_acl_post() called from jffs2_symlink(),
jffs2_mkdir(), jffs2_mknod() and jffs2_do_create().
It actually writes in-memory ACL objects into the medium next to
the success of writing meta-information.In the current implementation, we have to write a same inode meta
infomation twice when inode->i_mode is updated by the default ACL.
However, we can avoid the behavior by putting an updated i_mode
before it is written at first, as jffs2_init_acl_pre() doing.Signed-off-by: KaiGai Kohei
Signed-off-by: David Woodhouse
22 Aug, 2007
1 commit
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When POSIX ACL support was enabled, we weren't writing correct
legacy modes to the medium on inode creation, or when the ACL was set.
This meant that the permissions would be incorrect after the file system
was remounted.Signed-off-by: David Woodhouse
28 Apr, 2007
1 commit
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Conflicts:
drivers/mtd/Kconfig
Signed-off-by: David Woodhouse
27 Apr, 2007
1 commit
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This patch make JFFS2 able to work with UBI volumes via the emulated MTD
devices which are directly mapped to these volumes.Signed-off-by: Artem Bityutskiy
25 Apr, 2007
1 commit
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In particular, remove the bit in the LICENCE file about contacting
Red Hat for alternative arrangements. Their errant IS department broke
that arrangement a long time ago -- the policy of collecting copyright
assignments from contributors came to an end when the plug was pulled on
the servers hosting the project, without notice or reason.We do still dual-license it for use with eCos, with the GPL+exception
licence approved by the FSF as being GPL-compatible. It's just that nobody
has the right to license it differently.Signed-off-by: David Woodhouse
13 Feb, 2007
1 commit
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Many struct inode_operations in the kernel can be "const". Marking them const
moves these to the .rodata section, which avoids false sharing with potential
dirty data. In addition it'll catch accidental writes at compile time to
these shared resources.Signed-off-by: Arjan van de Ven
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
29 Jun, 2006
1 commit
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Same as with already do with the file operations: keep them in .rodata and
prevents people from doing runtime patching.Signed-off-by: Christoph Hellwig
Cc: Steven French
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
23 Jun, 2006
1 commit
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Give the statfs superblock operation a dentry pointer rather than a superblock
pointer.This complements the get_sb() patch. That reduced the significance of
sb->s_root, allowing NFS to place a fake root there. However, NFS does
require a dentry to use as a target for the statfs operation. This permits
the root in the vfsmount to be used instead.linux/mount.h has been added where necessary to make allyesconfig build
successfully.Interest has also been expressed for use with the FUSE and XFS filesystems.
Signed-off-by: David Howells
Acked-by: Al Viro
Cc: Nathan Scott
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
27 May, 2006
1 commit
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This allows us to drop another pointer from the struct jffs2_raw_node_ref,
shrinking it to 8 bytes on 32-bit machines (if the TEST_TOTLEN) paranoia
check is turned off, which will be committed soon).Signed-off-by: David Woodhouse
23 May, 2006
2 commits
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o Add a flag MTD_BIT_WRITEABLE for devices that allow single bits to be
cleared.
o Replace MTD_PROGRAM_REGIONS with a cleared MTD_BIT_WRITEABLE flag for
STMicro and Intel Sibley flashes with internal ECC. Those flashes
disallow clearing of single bits, unlike regular NOR flashes, so the
new flag models their behaviour better.
o Remove MTD_ECC. After the STMicro/Sibley merge, this flag is only set
and never checked.Signed-off-by: Joern Engel
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In 2002, STMicro started producing NOR flashes with internal ECC protection
for small blocks (8 or 16 bytes). Support for those flashes was added by me.
In 2005, Intel Sibley flashes copied this strategy and Nico added support for
those. Merge the code for both.Signed-off-by: Joern Engel
21 May, 2006
1 commit
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Signed-off-by: David Woodhouse
19 May, 2006
1 commit
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Device node major/minor numbers are just stored in the payload of a single
data node. Just extend that to 4 bytes and use new_encode_dev() for it.We only use the 4-byte format if we _need_ to, if !old_valid_dev(foo).
This preserves backwards compatibility with older code as much as
possible. If we do make devices with major or minor numbers above 255, and
then mount the file system with the old code, it'll just read the first
two bytes and get the numbers wrong. If it comes to garbage-collect it,
it'll then write back those wrong numbers. But that's about the best we
can expect.Signed-off-by: David Woodhouse
13 May, 2006
1 commit
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This attached patches provide xattr support including POSIX-ACL and
SELinux support on JFFS2 (version.5).There are some significant differences from previous version posted
at last December.
The biggest change is addition of EBS(Erase Block Summary) support.
Currently, both kernel and usermode utility (sumtool) can recognize
xattr nodes which have JFFS2_NODETYPE_XATTR/_XREF nodetype.In addition, some bugs are fixed.
- A potential race condition was fixed.
- Unexpected fail when updating a xattr by same name/value pair was fixed.
- A bug when removing xattr name/value pair was fixed.The fundamental structures (such as using two new nodetypes and exclusion
mechanism by rwsem) are unchanged. But most of implementation were reviewed
and updated if necessary.
Espacially, we had to change several internal implementations related to
load_xattr_datum() to avoid a potential race condition.[1/2] xattr_on_jffs2.kernel.version-5.patch
[2/2] xattr_on_jffs2.utils.version-5.patchSigned-off-by: KaiGai Kohei
Signed-off-by: David Woodhouse
29 Mar, 2006
1 commit
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This is a conversion to make the various file_operations structs in fs/
const. Basically a regexp job, with a few manual fixupsThe goal is both to increase correctness (harder to accidentally write to
shared datastructures) and reducing the false sharing of cachelines with
things that get dirty in .data (while .rodata is nicely read only and thus
cache clean)Signed-off-by: Arjan van de Ven
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
07 Nov, 2005
5 commits
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Signed-off-by: Thomas Gleixner
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- assume wbuf may be of size which is not power of 2
- don't make strange assumption about not padding wbuf for DataFlash
- use wbuf = DataFlash page and eraseblock >= 8 Dataflash pagesFrom: Peter Menzebach
Acked-by: Artem B. Bityutskiy
Signed-off-by: Thomas Gleixner -
Simplify the debugging code further.
Update the TODO listSigned-off-by: Artem B. Bityutskiy
Signed-off-by: Thomas Gleixner -
The goal of summary is to speed up the mount time. Erase block summary (EBS)
stores summary information at the end of every (closed) erase block. It is
no longer necessary to scan all nodes separetly (and read all pages of them)
just read this "small" summary, where every information is stored which is
needed at mount time.This summary information is stored in a JFFS2_FEATURE_RWCOMPAT_DELETE. During
the mount process if there is no summary info the orignal scan process will
be executed. EBS works with NAND and NOR flashes, too.There is a user space tool called sumtool to generate this summary
information for a JFFS2 image.Signed-off-by: Ferenc Havasi
Signed-off-by: Thomas Gleixner -
Intels Sibley flash needs JFFS2 write buffer functionality
Signed-off-by: Nicolas Pitre
Signed-off-by: Thomas Gleixner
06 Nov, 2005
1 commit
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JFFS2 uses f->dents to store the pointer to the symlink target string (in case
the inode is symlink). This is somewhat ugly to use the same field for
different reasons. Introduce distinct field f->target for this purpose.
Note, f->fragtree, f->dents, f->target may probably be put in a union.Signed-off-by: Artem B. Bityutskiy
Signed-off-by: Thomas Gleixner
13 Jul, 2005
1 commit
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Signed-off-by: Todd Poynor
Signed-off-by: Thomas Gleixner
06 Jul, 2005
1 commit
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Signed-off-by: David Woodhouse
Signed-off-by: Thomas Gleixner