diff options
| author | David Woodhouse <David.Woodhouse@intel.com> | 2010-05-19 19:37:13 +0400 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2010-05-19 19:49:37 +0400 |
| commit | 0717bf8411bb673dd2369aaa096f7396446b38f5 (patch) | |
| tree | 5106504557aae93a018bf3a5692ce9b0558e857e /fs/jffs2/nodemgmt.c | |
| parent | 9957abea31aed5783d6ca7175cce553045c0eb19 (diff) | |
| download | linux-0717bf8411bb673dd2369aaa096f7396446b38f5.tar.xz | |
jffs2: Erase pending blocks in GC pass, avoid invalid -EIO return
jffs2_garbage_collect_pass() would previously return -EAGAIN if it
couldn't find anything to garbage collect from, and there were blocks on
the erase_pending_list. If the blocks were actually in the process of
being erased, though, then they wouldn't be on that list. Check for
nr_erasing_blocks being non-zero instead.
Fix jffs2_reserve_space() to wait for the in-progress erases to
complete, when jffs2_garbage_collect_pass() returns -EAGAIN.
And fix jffs2_erase_succeeded() to actually wake up the erase_wait wq
that jffs2_reserve_space() is now using.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'fs/jffs2/nodemgmt.c')
| -rw-r--r-- | fs/jffs2/nodemgmt.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/fs/jffs2/nodemgmt.c b/fs/jffs2/nodemgmt.c index 191359dde4e1..08e2c69fc147 100644 --- a/fs/jffs2/nodemgmt.c +++ b/fs/jffs2/nodemgmt.c @@ -116,9 +116,21 @@ int jffs2_reserve_space(struct jffs2_sb_info *c, uint32_t minsize, ret = jffs2_garbage_collect_pass(c); - if (ret == -EAGAIN) - jffs2_erase_pending_blocks(c, 1); - else if (ret) + if (ret == -EAGAIN) { + spin_lock(&c->erase_completion_lock); + if (c->nr_erasing_blocks && + list_empty(&c->erase_pending_list) && + list_empty(&c->erase_complete_list)) { + DECLARE_WAITQUEUE(wait, current); + set_current_state(TASK_UNINTERRUPTIBLE); + add_wait_queue(&c->erase_wait, &wait); + D1(printk(KERN_DEBUG "%s waiting for erase to complete\n", __func__)); + spin_unlock(&c->erase_completion_lock); + + schedule(); + } else + spin_unlock(&c->erase_completion_lock); + } else if (ret) return ret; cond_resched(); |