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fs: scale inode alias list

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Add a new lock, dcache_inode_lock, to protect the inode's i_dentry list
from concurrent modification. d_alias is also protected by d_lock.

Signed-off-by: Nick Piggin <npiggin@kernel.dk>
This commit is contained in:
Nick Piggin 2011-01-07 17:49:35 +11:00
parent 2fd6b7f507
commit b23fb0a603
9 changed files with 78 additions and 9 deletions
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include/linux/dcache.h
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@ -181,6 +181,7 @@ struct dentry_operations {
#define DCACHE_CANT_MOUNT 0x0100
extern spinlock_t dcache_inode_lock;
extern spinlock_t dcache_lock;
extern seqlock_t rename_lock;