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| author | Christian Brauner <brauner@kernel.org> | 2025-11-12 10:47:52 +0100 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2025-11-12 10:47:52 +0100 |
| commit | e9d50b78fdfe675b038ddaec7a139dbe3082174c (patch) | |
| tree | e1b5635e0fd61069b505895f1dd2fa4414a93ba5 /fs/inode.c | |
| parent | 3cd1548a278c7d6a9bdef1f1866e7cf66bfd3518 (diff) | |
| parent | 56325e8c68c0724d626f665773a5005dcf44e329 (diff) | |
Merge patch series "fs: add iput_not_last()"
Add iput_not_last() and switch landlock over to it to remove
false-positives from might_sleep() annotations in iput().
Link: https://patch.msgid.link/20251105212025.807549-1-mjguzik@gmail.com
* patches from https://patch.msgid.link/20251105212025.807549-1-mjguzik@gmail.com:
landlock: fix splats from iput() after it started calling might_sleep()
fs: add iput_not_last()
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'fs/inode.c')
| -rw-r--r-- | fs/inode.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/fs/inode.c b/fs/inode.c index ec9339024ac3..cff1d3af0d57 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -1967,6 +1967,18 @@ retry: } EXPORT_SYMBOL(iput); +/** + * iput_not_last - put an inode assuming this is not the last reference + * @inode: inode to put + */ +void iput_not_last(struct inode *inode) +{ + VFS_BUG_ON_INODE(atomic_read(&inode->i_count) < 2, inode); + + WARN_ON(atomic_sub_return(1, &inode->i_count) == 0); +} +EXPORT_SYMBOL(iput_not_last); + #ifdef CONFIG_BLOCK /** * bmap - find a block number in a file |