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| author | Nick Piggin <npiggin@kernel.dk> | 2011-01-07 06:49:58 (GMT) |
|---|---|---|
| committer | Nick Piggin <npiggin@kernel.dk> | 2011-01-07 06:50:29 (GMT) |
| commit | b74c79e99389cd79b31fcc08f82c24e492e63c7e (patch) | |
| tree | 763c6b412517306670bc625e90035f2d16bb739f /fs/btrfs/inode.c | |
| parent | 34286d6662308d82aed891852d04c7c3a2649b16 (diff) | |
| download | linux-b74c79e99389cd79b31fcc08f82c24e492e63c7e.tar.xz | |
fs: provide rcu-walk aware permission i_ops
Signed-off-by: Nick Piggin <npiggin@kernel.dk>
Diffstat (limited to 'fs/btrfs/inode.c')
| -rw-r--r-- | fs/btrfs/inode.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 63e4546..5cf0db0 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -7211,11 +7211,14 @@ static int btrfs_set_page_dirty(struct page *page) return __set_page_dirty_nobuffers(page); } -static int btrfs_permission(struct inode *inode, int mask) +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, btrfs_check_acl); + return generic_permission(inode, mask, flags, btrfs_check_acl); } static const struct inode_operations btrfs_dir_inode_operations = { |