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fs: rcu-walk aware d_revalidate method

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Require filesystems be aware of .d_revalidate being called in rcu-walk
mode (nd->flags & LOOKUP_RCU). For now do a simple push down, returning
-ECHILD from all implementations.

Signed-off-by: Nick Piggin <npiggin@kernel.dk>
This commit is contained in:
Nick Piggin
2011-01-07 17:49:57 +11:00
parent 44a7d7a878
commit 34286d6662
27 changed files with 215 additions and 61 deletions
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include/linux/dcache.h
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@ -190,7 +190,6 @@ struct dentry_operations {
#define DCACHE_OP_REVALIDATE 0x4000
#define DCACHE_OP_DELETE 0x8000
extern spinlock_t dcache_inode_lock;
extern seqlock_t rename_lock;