From 422b120238130307da64fa44c9fb722bfaf5f1af Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Wed, 23 Apr 2008 15:40:52 +0100 Subject: [JFFS2] Fix jffs2_reserve_space() when all blocks are pending erasure. When _all_ the blocks were on the erase_pending_list, we could't find a block to GC from but there was no _actually_ free space, and jffs2_reserve_space() would get a little unhappy. Handle this case by returning -EAGAIN from jffs2_garbage_collect_pass(). There are two callers of that function -- jffs2_flush_wbuf_gc(), which will interpret it as an error and flush the writebuffer by other means, and jffs2_reserve_space(), which we modify to respond to -EAGAIN with an immediate call to jffs2_erase_pending_blocks() and another run round the loop. Signed-off-by: David Woodhouse --- fs/jffs2/nodemgmt.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'fs/jffs2/nodemgmt.c') diff --git a/fs/jffs2/nodemgmt.c b/fs/jffs2/nodemgmt.c index 747a73f0aa4d..9df8f3ef20df 100644 --- a/fs/jffs2/nodemgmt.c +++ b/fs/jffs2/nodemgmt.c @@ -116,7 +116,10 @@ int jffs2_reserve_space(struct jffs2_sb_info *c, uint32_t minsize, spin_unlock(&c->erase_completion_lock); ret = jffs2_garbage_collect_pass(c); - if (ret) + + if (ret == -EAGAIN) + jffs2_erase_pending_blocks(c, 1); + else if (ret) return ret; cond_resched(); -- cgit v1.2.3