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| author | Takashi Iwai <tiwai@suse.de> | 2009-11-14 14:38:28 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2009-11-14 14:38:28 +0100 |
| commit | 0c3c35e148dbc03106038dd25816fb9f3a084d86 (patch) | |
| tree | 8b8cc6a027353a0f242f61362b35b0942da61b83 /mm/backing-dev.c | |
| parent | 50d40f187f9182ee8caa1b83f80a0e11e2226baa (diff) | |
| parent | 5e08fe570c2dbabb5015c37049eb9a451e55c890 (diff) | |
| download | kernel-crypto-0c3c35e148dbc03106038dd25816fb9f3a084d86.tar.gz kernel-crypto-0c3c35e148dbc03106038dd25816fb9f3a084d86.tar.xz kernel-crypto-0c3c35e148dbc03106038dd25816fb9f3a084d86.zip | |
Merge branch 'fix/misc' into topic/misc
Diffstat (limited to 'mm/backing-dev.c')
| -rw-r--r-- | mm/backing-dev.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/mm/backing-dev.c b/mm/backing-dev.c index 3d3accb1f80..1065b715ef6 100644 --- a/mm/backing-dev.c +++ b/mm/backing-dev.c @@ -92,7 +92,7 @@ static int bdi_debug_stats_show(struct seq_file *m, void *v) "BdiDirtyThresh: %8lu kB\n" "DirtyThresh: %8lu kB\n" "BackgroundThresh: %8lu kB\n" - "WriteBack threads:%8lu\n" + "WritebackThreads: %8lu\n" "b_dirty: %8lu\n" "b_io: %8lu\n" "b_more_io: %8lu\n" @@ -610,6 +610,21 @@ static void bdi_wb_shutdown(struct backing_dev_info *bdi) kthread_stop(wb->task); } +/* + * This bdi is going away now, make sure that no super_blocks point to it + */ +static void bdi_prune_sb(struct backing_dev_info *bdi) +{ + struct super_block *sb; + + spin_lock(&sb_lock); + list_for_each_entry(sb, &super_blocks, s_list) { + if (sb->s_bdi == bdi) + sb->s_bdi = NULL; + } + spin_unlock(&sb_lock); +} + void bdi_unregister(struct backing_dev_info *bdi) { if (bdi->dev) { @@ -682,6 +697,7 @@ void bdi_destroy(struct backing_dev_info *bdi) spin_unlock(&inode_lock); } + bdi_prune_sb(bdi); bdi_unregister(bdi); for (i = 0; i < NR_BDI_STAT_ITEMS; i++) |