Commit Graph

21 Commits

Author SHA1 Message Date
David Woodhouse
9bfeb691e7 [JFFS2] Switch to using an array of jffs2_raw_node_refs instead of a list.
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 <dwmw2@infradead.org>
2006-05-26 21:19:05 +01:00
David Woodhouse
046b8b9808 [JFFS2] Add 'jeb' argument to jffs2_prealloc_raw_node_refs()
Preallocation of refs is shortly going to be a per-eraseblock thing,
rather than per-filesystem. Add the required argument to the function.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-05-25 01:50:35 +01:00
David Woodhouse
c38c1b613d [JFFS2] jffs2_free_all_node_refs() doesn't free them all. Rename it.
... to jffs2_free_jeb_node_refs() since that's what it does.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-05-25 01:38:27 +01:00
David Woodhouse
2f785402f3 [JFFS2] Reduce visibility of raw_node_ref to upper layers of JFFS2 code.
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 <dwmw2@infradead.org>
2006-05-24 02:04:45 +01:00
David Woodhouse
0eac940b8a [JFFS2] Add some preemptive BUG checks for XATTR code
In a couple of places, we assume that what's at the end of the
->next_in_ino list is a struct jffs2_inode_cache. Let's check
for that, since we expect it to change soon.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-05-22 16:29:23 +01:00
David Woodhouse
fcb7578719 [JFFS2] Extend jffs2_link_node_ref() to link into per-inode list too.
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 <dwmw2@infradead.org>
2006-05-22 15:23:10 +01:00
David Woodhouse
7807ef7ba2 [JFFS2] Fix summary handling of unknown but compatible nodes.
For RWCOMPAT and ROCOMPAT nodes, we should still allow the mount to
succeed. Just abandon the summary and fall through to the full scan.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-05-21 03:45:27 +01:00
David Woodhouse
f1f9671bd8 [JFFS2] Introduce jffs2_link_node_ref() function to reduce code duplication
The same sequence of code was repeated in many places, to add a new
struct jffs2_raw_node_ref to an eraseblock and adjust the space accounting
accordingly. Move it out-of-line.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-05-20 19:45:26 +01:00
Thomas Gleixner
182ec4eee3 [JFFS2] Clean up trailing white spaces
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-07 14:18:56 +01:00
Artem B. Bityutskiy
733802d974 [JFFS2] Debug code simplification, update TODO
Simplify the debugging code further.
Update the TODO list

Signed-off-by: Artem B. Bityutskiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 22:20:33 +01:00
Artem B. Bityutskiy
e0c8e42f8f [JFFS2] Debug code clean up - step 3
Various simplifiactions. printk format corrections.
Convert more code to use the new debug functions.

Signed-off-by: Artem B. Bityutskiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 17:06:49 +01:00
Artem B. Bityutskiy
730554d946 [JFFS2] Debug code clean up - step 1
Move debug functions into a seperate source file

Signed-off-by: Artem B. Bityutskiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 16:21:25 +01:00
Thomas Gleixner
5d157885f3 [JFFS2] Fix node allocation leak
In the rare case of failing to write the cleanmarker
the allocated node was not freed.

Pointed out by Forrest Zhao
Initial cleanup by Joern Engel

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-07-15 08:14:44 +02:00
Thomas Gleixner
7d27c8143c [JFFS2] Whitespace cleanup. Fix missing debug message
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23 13:49:40 +02:00
Artem B. Bityuckiy
8cd7921667 [JFFS2] Fix NOR only compile
Fix the bug that caouses problems when compiling for NOR.
We read  a newly erased block so we don't need to check ECC.

Define jffs2_is_writebuffered as zero if there is no wbuf.

Signed-off-by: Artem B. Bityuckiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23 13:19:07 +02:00
Artem B. Bityuckiy
894214d1a7 [JFFS2] Fix race problems with wbuf.
Signed-off-by: Artem B. Bityuckiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23 13:09:29 +02:00
Artem B. Bityuckiy
437316d9b5 [JFFS2] Forbid to free inode_cache objects if its nlink isn't zero.
Signed-off-by: Artem B. Bityuckiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23 13:02:39 +02:00
David Woodhouse
67e345d17f [JFFS2] Prevent ino cache removal for inodes in use
Don't remove inocache for inodes which are in read_inode() or
clear_inode() until they're done.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23 12:46:14 +02:00
Andrew Victor
8f15fd55f9 [JFFS2] Add support for JFFS2-on-Dataflash devices.
For Dataflash, can_mark_obsolete = false and the NAND write buffering
code (wbuf.c) is used.

Since the DataFlash chip will automatically erase pages when writing,
the cleanmarkers are not needed - so cleanmarker_oob = false and
cleanmarker_size = 0

DataFlash page-sizes are not a power of two (they're multiples of 528
bytes).  The SECTOR_ADDR macro (added in the previous core patch) is
replaced with a (slower) div/mod version if CONFIG_JFFS2_FS_DATAFLASH is
selected.

Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23 12:28:03 +02:00
Andrew Victor
3be36675d4 [JFFS2] Core changes required to support JFFS2-on-Dataflash devices.
DataFlash page-sizes are not a power of two (they're multiples of 528
bytes).  There are a few places in JFFS2 code where sector_size is used
as a bitmask.  A new macro (SECTOR_ADDR) was defined to calculate these
sector addresses. For non-DataFlash devices, the original (faster)
bitmask operation is still used.

In scan.c, the EMPTY_SCAN_SIZE was a constant of 1024.
Since this could be larger than the sector size of the DataFlash, this
is now basically set to MIN(sector_size, 1024).

Addition of a jffs2_is_writebuffered() macro.

Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23 12:27:09 +02:00
Linus Torvalds
1da177e4c3 Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00