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fs: move i_sb_list out from under inode_lock

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Protect the per-sb inode list with a new global lock
inode_sb_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>
This commit is contained in:
Dave Chinner
2011-03-22 22:23:40 +11:00
committed by Al Viro
parent f283c86afe
commit 55fa6091d8
6 changed files with 67 additions and 56 deletions
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2
fs/internal.h
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@@ -125,6 +125,8 @@ extern long do_handle_open(int mountdirfd,
/*
* inode.c
*/
extern spinlock_t inode_sb_list_lock;
extern int get_nr_dirty_inodes(void);
extern void evict_inodes(struct super_block *);
extern int invalidate_inodes(struct super_block *, bool);