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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 <[email protected]>
This commit is contained in:
Nick Piggin 2011-01-07 17:49:35 +11:00
commit b23fb0a603
9 changed files with 78 additions and 9 deletions
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2
fs/affs/amigaffs.c
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@ -129,6 +129,7 @@ affs_fix_dcache(struct dentry *dentry, u32 entry_ino)
struct list_head *head, *next;
spin_lock(&dcache_lock);
spin_lock(&dcache_inode_lock);
head = &inode->i_dentry;
next = head->next;
while (next != head) {
@ -139,6 +140,7 @@ affs_fix_dcache(struct dentry *dentry, u32 entry_ino)
}
next = next->next;
}
spin_unlock(&dcache_inode_lock);
spin_unlock(&dcache_lock);
}