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[JFFS2] Don't advance c->wbuf_ofs to next eraseblock after wbuf flush

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After flushing the last page of an eraseblock, don't leave the
wbuf 'offset' field pointing at the start of the next physical
eraseblock. This was causing a BUG() on NOR-ECC (Sibley) flash, where
we start writing a little further in, after the cleanmarker.

Debugged by Alexander Belyakov <abelyako@googlemail.com>

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
This commit is contained in:
David Woodhouse 2007-05-05 09:52:49 +01:00
parent 693ef66d89
commit 3fddb6c985
1 changed files with 4 additions and 1 deletions
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5
fs/jffs2/wbuf.c
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@ -637,7 +637,10 @@ static int __jffs2_flush_wbuf(struct jffs2_sb_info *c, int pad)
memset(c->wbuf,0xff,c->wbuf_pagesize); memset(c->wbuf,0xff,c->wbuf_pagesize);
/* adjust write buffer offset, else we get a non contiguous write bug */ /* adjust write buffer offset, else we get a non contiguous write bug */
c->wbuf_ofs += c->wbuf_pagesize; if (SECTOR_ADDR(c->wbuf_ofs) == SECTOR_ADDR(c->wbuf_ofs+c->wbuf_pagesize))
c->wbuf_ofs += c->wbuf_pagesize;
else
c->wbuf_ofs = 0xffffffff;
c->wbuf_len = 0; c->wbuf_len = 0;
return 0; return 0;
} }