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| author | Al Viro <[email protected]> | 2010-10-23 15:11:40 +0000 |
|---|---|---|
| committer | Al Viro <[email protected]> | 2010-10-26 01:26:11 +0000 |
| commit | 7de9c6ee3ecffd99e1628e81a5ea5468f7581a1f (patch) | |
| tree | 88787e77ba8a253d0a26aeda4bd5e58532d592e0 /fs/inode.c | |
| parent | fs: remove inode_add_to_list/__inode_add_to_list (diff) | |
| download | kernel-7de9c6ee3ecffd99e1628e81a5ea5468f7581a1f.tar.gz kernel-7de9c6ee3ecffd99e1628e81a5ea5468f7581a1f.zip | |
new helper: ihold()
Clones an existing reference to inode; caller must already hold one.
Signed-off-by: Al Viro <[email protected]>
Diffstat (limited to 'fs/inode.c')
| -rw-r--r-- | fs/inode.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/inode.c b/fs/inode.c index 430d70f2abe7..05ea293d5f32 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -320,6 +320,15 @@ void __iget(struct inode *inode) atomic_inc(&inode->i_count); } +/* + * get additional reference to inode; caller must already hold one. + */ +void ihold(struct inode *inode) +{ + WARN_ON(atomic_inc_return(&inode->i_count) < 2); +} +EXPORT_SYMBOL(ihold); + static void inode_lru_list_add(struct inode *inode) { if (list_empty(&inode->i_list)) { |