linux.git/fs/jffs2/write.c, branch v2.6.23

JFFS2 locking regression fix.

2007-08-21T05:44:27+00:00

Commit a491486a2087ac3dfc00efb4f838c8d684afaf54 introduced a locking
problem in JFFS2 -- we up() the alloc_sem when we weren't previously
holding it. This leads to all kinds of fun behaviour later.

There was a _reason_ for the
	if (1 /* alternative path needs testing */ ||
which the above-mentioned commit removed :)

Discovered and debugged by Giulio Fedel 

Signed-off-by: David Woodhouse 
Signed-off-by: Linus Torvalds

[JFFS2] Deletion dirents should be REF_NORMAL, not REF_PRISTINE.

2007-08-02T20:39:50+00:00

Otherwise they'll never actually get garbage-collected.
Noted by Jonathan Larmour.

Signed-off-by: David Woodhouse

[JFFS2] Prevent oops after 'node added in wrong place' debug check

2007-08-02T20:36:35+00:00

jffs2_add_physical_node_ref() should never really return error -- it's
an internal debugging check which triggered. We really need to work out
why and stop it happening. But in the meantime, let's make the failure
mode a little less nasty.

Signed-off-by: Joakim Tjernlund 
Signed-off-by: David Woodhouse

[JFFS2] Tidy up licensing/copyright boilerplate.

2007-04-25T13:16:47+00:00

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

[JFFS2] Obsolete dirent nodes immediately on unlink, where possible.

2007-04-21T03:09:28+00:00

Signed-off-by: Joakim Tjernlund 
Signed-off-by: David Woodhouse

[JFFS2] Reduce visibility of raw_node_ref to upper layers of JFFS2 code.

2006-05-24T01:04:45+00:00

As the first step towards eliminating the ref->next_phys member and saving
memory by using an _array_ of struct jffs2_raw_node_ref per eraseblock,
stop the write functions from allocating their own refs; have them just
_reserve_ the appropriate number instead. Then jffs2_link_node_ref() can
just fill them in.

Use a linked list of pre-allocated refs in the superblock, for now. Once
we switch to an array, it'll just be a case of extending that array.

Signed-off-by: David Woodhouse

[JFFS2] Remove flash offset argument from various functions.

2006-05-22T23:38:06+00:00

We don't need the upper layers to deal with the physical offset. It's
_always_ c->nextblock->offset + c->sector_size - c->nextblock->free_size
so we might as well just let the actual write functions deal with that.

Signed-off-by: David Woodhouse

[JFFS2] Extend jffs2_link_node_ref() to link into per-inode list too.

2006-05-22T14:23:10+00:00

Let's avoid the potential for forgetting to set ref->next_in_ino, by doing
it within jffs2_link_node_ref() instead.

This highlights the ugliness of what we're currently doing with
xattr_datum and xattr_ref structures -- we should find a nicer way of
dealing with that.

Signed-off-by: David Woodhouse

[JFFS2] Add length argument to jffs2_add_physical_node_ref()

2006-05-21T03:36:45+00:00

If __totlen is going away, we need to pass the length in separately.
Also stop callers from needlessly setting ref->next_phys to NULL,
since that's done for them... and since that'll also be going away soon.

Signed-off-by: David Woodhouse

[JFFS2][XATTR] Remove 'struct list_head ilist' from jffs2_inode_cache.

2006-05-13T06:15:07+00:00

This patch can reduce 4-byte of memory usage per inode_cache.

[4/10] jffs2-xattr-v5.1-04-remove_ilist_from_ic.patch

Signed-off-by: KaiGai Kohei