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authorNick Piggin <npiggin@kernel.dk>2011-01-07 09:49:35 +0300
committerNick Piggin <npiggin@kernel.dk>2011-01-07 09:50:22 +0300
commitb23fb0a60379a95e10c671f646b259ea2558421e (patch)
tree7c3644b91241d32fda502a7be0b78e4c225f8091 /include/linux/dcache.h
parent2fd6b7f50797f2e993eea59e0a0b8c6399c811dc (diff)
downloadlinux-b23fb0a60379a95e10c671f646b259ea2558421e.tar.xz
fs: scale inode alias list
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>
Diffstat (limited to 'include/linux/dcache.h')
-rw-r--r--include/linux/dcache.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index ddf4f55624f7..bda5ec0b077d 100644
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -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;