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| author | Jens Axboe <jens.axboe@oracle.com> | 2009-09-14 13:12:40 +0200 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2009-09-16 15:18:51 +0200 |
| commit | cfc4ba5365449cb6b5c9f68d755a142f17da1e47 (patch) | |
| tree | 08770de9bb0e658f2e65abd4d10187b3e9f6bb1b /include/linux/backing-dev.h | |
| parent | f11fcae8401a3175f528e2f7917362645d570111 (diff) | |
| download | lwn-cfc4ba5365449cb6b5c9f68d755a142f17da1e47.tar.gz lwn-cfc4ba5365449cb6b5c9f68d755a142f17da1e47.zip | |
writeback: use RCU to protect bdi_list
Now that bdi_writeback_all() no longer handles integrity writeback,
it doesn't have to block anymore. This means that we can switch
bdi_list reader side protection to RCU.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'include/linux/backing-dev.h')
| -rw-r--r-- | include/linux/backing-dev.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h index f169bcb90b58..859e797f4576 100644 --- a/include/linux/backing-dev.h +++ b/include/linux/backing-dev.h @@ -59,6 +59,7 @@ struct bdi_writeback { struct backing_dev_info { struct list_head bdi_list; + struct rcu_head rcu_head; unsigned long ra_pages; /* max readahead in PAGE_CACHE_SIZE units */ unsigned long state; /* Always use atomic bitops on this */ unsigned int capabilities; /* Device capabilities */ |