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fs: dcache per-inode inode alias locking

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dcache_inode_lock can be replaced with per-inode locking. Use existing
inode->i_lock for this. This is slightly non-trivial because we sometimes
need to find the inode from the dentry, which requires d_inode to be
stabilised (either with refcount or d_lock).

Signed-off-by: Nick Piggin <[email protected]>
This commit is contained in:
Nick Piggin 2011-01-07 17:50:06 +11:00
commit 873feea09e
9 changed files with 67 additions and 60 deletions
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4
fs/affs/amigaffs.c
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@ -128,7 +128,7 @@ affs_fix_dcache(struct dentry *dentry, u32 entry_ino)
void *data = dentry->d_fsdata;
struct list_head *head, *next;
spin_lock(&dcache_inode_lock);
spin_lock(&inode->i_lock);
head = &inode->i_dentry;
next = head->next;
while (next != head) {
@ -139,7 +139,7 @@ affs_fix_dcache(struct dentry *dentry, u32 entry_ino)
}
next = next->next;
}
spin_unlock(&dcache_inode_lock);
spin_unlock(&inode->i_lock);
}