2019-01-14 20:41:46

by Mathieu Malaterre

[permalink] [raw]
Subject: [PATCH 1/3] fs: annotate implicit fall throughs

There is a plan to build the kernel with -Wimplicit-fallthrough and
these places in the code produced warnings (W=1). Fix them up.

This commit remove the following warnings:

fs/libfs.c:148:11: warning: this statement may fall through [-Wimplicit-fallthrough=]
fs/libfs.c:150:7: warning: this statement may fall through [-Wimplicit-fallthrough=]

Signed-off-by: Mathieu Malaterre <[email protected]>
---
fs/libfs.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/fs/libfs.c b/fs/libfs.c
index 0fb590d79f30..9efb647917e0 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -146,9 +146,11 @@ loff_t dcache_dir_lseek(struct file *file, loff_t offset, int whence)
switch (whence) {
case 1:
offset += file->f_pos;
+ /* fall through */
case 0:
if (offset >= 0)
break;
+ /* fall through */
default:
return -EINVAL;
}
--
2.19.2



2019-01-14 20:40:38

by Mathieu Malaterre

[permalink] [raw]
Subject: [PATCH 2/3] fs: annotate implicit fall through

There is a plan to build the kernel with -Wimplicit-fallthrough and
this place in the code produced a warning (W=1).

In this particular case remove a ‘:’ so as to match the regular
expression expected by GCC.

This commit remove the following warning:

fs/locks.c:1473:16: warning: this statement may fall through [-Wimplicit-fallthrough=]

Signed-off-by: Mathieu Malaterre <[email protected]>
---
fs/locks.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/locks.c b/fs/locks.c
index ff6af2c32601..d958c3863b4b 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -1471,7 +1471,7 @@ static void lease_clear_pending(struct file_lock *fl, int arg)
switch (arg) {
case F_UNLCK:
fl->fl_flags &= ~FL_UNLOCK_PENDING;
- /* fall through: */
+ /* fall through */
case F_RDLCK:
fl->fl_flags &= ~FL_DOWNGRADE_PENDING;
}
--
2.19.2


2019-01-14 20:41:54

by Mathieu Malaterre

[permalink] [raw]
Subject: [PATCH 3/3] fs/fcntl: annotate implicit fall through

There is a plan to build the kernel with -Wimplicit-fallthrough and
this place in the code produced a warning (W=1).

In this particular case change a ‘:’ with a ‘-’ so as to match the
regular expression expected by GCC.

This commit remove the following warning:

fs/fcntl.c:770:7: warning: this statement may fall through [-Wimplicit-fallthrough=]

Signed-off-by: Mathieu Malaterre <[email protected]>
---
fs/fcntl.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/fcntl.c b/fs/fcntl.c
index 083185174c6d..3d40771e8e7c 100644
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
@@ -769,7 +769,7 @@ static void send_sigio_to_task(struct task_struct *p,
si.si_fd = fd;
if (!do_send_sig_info(signum, &si, p, type))
break;
- /* fall-through: fall back on the old plain SIGIO signal */
+ /* fall-through - fall back on the old plain SIGIO signal */
case 0:
do_send_sig_info(SIGIO, SEND_SIG_PRIV, p, type);
}
--
2.19.2