[JFFS2] Core changes required to support JFFS2-on-Dataflash devices.

Browse source

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>

...

This commit is contained in:

Andrew Victor 2005-02-09 09:09:05 +00:00 • committed by Thomas Gleixner

parent 045e9a5d51

commit 3be36675d4

5 changed files with 53 additions and 44 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

4

fs/jffs2/erase.c

View file

5

fs/jffs2/gc.c

View file

5

fs/jffs2/os-linux.h

View file

20

fs/jffs2/scan.c

View file

63

fs/jffs2/wbuf.c

View file