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authorArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2007-03-21 11:07:05 +0200
committerDavid Woodhouse <dwmw2@infradead.org>2007-04-17 13:53:51 -0400
commitb0afbbec4981417f79e05865a36e57abfc289002 (patch)
treeb0e14a643310de8e1232859f5b4af3effe3a7ea6
parent4226b510371efd9cdc628663527d36aee36054a9 (diff)
downloadop-kernel-dev-b0afbbec4981417f79e05865a36e57abfc289002.zip
op-kernel-dev-b0afbbec4981417f79e05865a36e57abfc289002.tar.gz
[JFFS2] fix deadlock on error path
When the MTD driver returns write failure, the following deadlock occurs: We are in __jffs2_flush_wbuf(), we hold &c->wbuf_sem. Write failure. jffs2_wbuf_recover()->jffs2_reserve_space_gc()->jffs2_do_reserve_space() ->jffs2_erase_pending_blocks()->jffs2_flash_read() and it tries to lock &c->wbuf_sem again. Deadlock. Reported-by: Adrian Hunter <ext-adrian.hunter@nokia.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
-rw-r--r--fs/jffs2/erase.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/jffs2/erase.c b/fs/jffs2/erase.c
index ad01210..6b1f7be 100644
--- a/fs/jffs2/erase.c
+++ b/fs/jffs2/erase.c
@@ -333,7 +333,7 @@ static int jffs2_block_check_erase(struct jffs2_sb_info *c, struct jffs2_erasebl
*bad_offset = ofs;
- ret = jffs2_flash_read(c, ofs, readlen, &retlen, ebuf);
+ ret = c->mtd->read(c->mtd, ofs, readlen, &retlen, ebuf);
if (ret) {
printk(KERN_WARNING "Read of newly-erased block at 0x%08x failed: %d. Putting on bad_list\n", ofs, ret);
goto fail;
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