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[PATCH] lockdep: annotate dcache

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Teach special (recursive) locking code to the lock validator.  Has no effect
on non-lockdep kernels.

Signed-off-by: Ingo Molnar <[email protected]>
Signed-off-by: Arjan van de Ven <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Ingo Molnar 2006-07-03 00:25:04 -07:00 • committed by Linus Torvalds
commit a90b9c05df
2 changed files with 14 additions and 2 deletions
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4
fs/dcache.c
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@ -1339,10 +1339,10 @@ void d_move(struct dentry * dentry, struct dentry * target)
*/
if (target < dentry) {
spin_lock(&target->d_lock);
spin_lock(&dentry->d_lock);
spin_lock_nested(&dentry->d_lock, DENTRY_D_LOCK_NESTED);
} else {
spin_lock(&dentry->d_lock);
spin_lock(&target->d_lock);
spin_lock_nested(&target->d_lock, DENTRY_D_LOCK_NESTED);
}
/* Move the dentry to the target hash queue, if on different bucket */