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timerfd: convert timerfd_create() to FD_ADD()

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Link: https://patch.msgid.link/20251123-work-fd-prepare-v4-15-b6efa1706cfd@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Christian Brauner
2025-11-23 17:33:33 +01:00
parent 5b755da105
commit 14010faa1b
1 changed files with 9 additions and 20 deletions
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29
fs/timerfd.c
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@@ -393,9 +393,8 @@ static const struct file_operations timerfd_fops = {
SYSCALL_DEFINE2(timerfd_create, int, clockid, int, flags)
{
int ufd;
struct timerfd_ctx *ctx;
struct file *file;
struct timerfd_ctx *ctx __free(kfree) = NULL;
int ret;
/* Check the TFD_* constants for consistency. */
BUILD_BUG_ON(TFD_CLOEXEC != O_CLOEXEC);
@@ -432,23 +431,13 @@ SYSCALL_DEFINE2(timerfd_create, int, clockid, int, flags)
ctx->moffs = ktime_mono_to_real(0);
ufd = get_unused_fd_flags(flags & TFD_SHARED_FCNTL_FLAGS);
if (ufd < 0) {
kfree(ctx);
return ufd;
}
file = anon_inode_getfile_fmode("[timerfd]", &timerfd_fops, ctx,
O_RDWR | (flags & TFD_SHARED_FCNTL_FLAGS),
FMODE_NOWAIT);
if (IS_ERR(file)) {
put_unused_fd(ufd);
kfree(ctx);
return PTR_ERR(file);
}
fd_install(ufd, file);
return ufd;
ret = FD_ADD(flags & TFD_SHARED_FCNTL_FLAGS,
anon_inode_getfile_fmode("[timerfd]", &timerfd_fops, ctx,
O_RDWR | (flags & TFD_SHARED_FCNTL_FLAGS),
FMODE_NOWAIT));
if (ret >= 0)
retain_and_null_ptr(ctx);
return ret;
}
static int do_timerfd_settime(int ufd, int flags,