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btrfs: provide simple rcu-walk ACL implementation

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This simple implementation just checks for no ACLs on the inode, and
if so, then the rcu-walk may proceed, otherwise fail it.

Signed-off-by: Nick Piggin <npiggin@kernel.dk>
This commit is contained in:
Nick Piggin
2011-01-07 17:50:01 +11:00
parent 73598611ad
commit 258a5aa8df
2 changed files with 12 additions and 12 deletions
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3
fs/btrfs/inode.c
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@@ -7213,9 +7213,6 @@ static int btrfs_set_page_dirty(struct page *page)
static int btrfs_permission(struct inode *inode, int mask, unsigned int flags)
{
if (flags & IPERM_FLAG_RCU)
return -ECHILD;
if ((BTRFS_I(inode)->flags & BTRFS_INODE_READONLY) && (mask & MAY_WRITE))
return -EACCES;
return generic_permission(inode, mask, flags, btrfs_check_acl);