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authorDave Chinner <dchinner@redhat.com>2011-03-22 22:23:41 +1100
committerAl Viro <viro@zeniv.linux.org.uk>2011-03-24 21:17:51 -0400
commita66979abad090b2765a6c6790c9fdeab996833f2 (patch)
treee48b2d0fac8f96456286a503aeeb952620234961 /mm/filemap.c
parent55fa6091d83160ca772fc37cebae45d42695a708 (diff)
downloadop-kernel-dev-a66979abad090b2765a6c6790c9fdeab996833f2.zip
op-kernel-dev-a66979abad090b2765a6c6790c9fdeab996833f2.tar.gz
fs: move i_wb_list out from under inode_lock
Protect the inode writeback list with a new global lock inode_wb_list_lock and use it to protect the list manipulations and traversals. This lock replaces the inode_lock as the inodes on the list can be validity checked while holding the inode->i_lock and hence the inode_lock is no longer needed to protect the list. Signed-off-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'mm/filemap.c')
-rw-r--r--mm/filemap.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/mm/filemap.c b/mm/filemap.c
index 499e9aa..d8b34d1 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -80,8 +80,8 @@
* ->i_mutex
* ->i_alloc_sem (various)
*
- * ->inode_lock
- * ->sb_lock (fs/fs-writeback.c)
+ * inode_wb_list_lock
+ * sb_lock (fs/fs-writeback.c)
* ->mapping->tree_lock (__sync_single_inode)
*
* ->i_mmap_lock
@@ -98,9 +98,9 @@
* ->zone.lru_lock (check_pte_range->isolate_lru_page)
* ->private_lock (page_remove_rmap->set_page_dirty)
* ->tree_lock (page_remove_rmap->set_page_dirty)
- * ->inode_lock (page_remove_rmap->set_page_dirty)
+ * inode_wb_list_lock (page_remove_rmap->set_page_dirty)
* ->inode->i_lock (page_remove_rmap->set_page_dirty)
- * ->inode_lock (zap_pte_range->set_page_dirty)
+ * inode_wb_list_lock (zap_pte_range->set_page_dirty)
* ->inode->i_lock (zap_pte_range->set_page_dirty)
* ->private_lock (zap_pte_range->__set_page_dirty_buffers)
*
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