The patch titled
Subject: ocfs2: change slot number type s16 to u16
has been added to the -mm tree. Its filename is
ocfs2-change-slot-number-type-s16-to-u16.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/ocfs2-change-slot-number-type-s16-to-u16.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/ocfs2-change-slot-number-type-s16-to-u16.patch
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------------------------------------------------------
From: Junxiao Bi <junxiao.bi@xxxxxxxxxx>
Subject: ocfs2: change slot number type s16 to u16
Dan Carpenter reported the following static checker warning.
fs/ocfs2/super.c:1269 ocfs2_parse_options() warn: '(-1)' 65535 can't fit into 32767 'mopt->slot'
fs/ocfs2/suballoc.c:859 ocfs2_init_inode_steal_slot() warn: '(-1)' 65535 can't fit into 32767 'osb->s_inode_steal_slot'
fs/ocfs2/suballoc.c:867 ocfs2_init_meta_steal_slot() warn: '(-1)' 65535 can't fit into 32767 'osb->s_meta_steal_slot'
That's because OCFS2_INVALID_SLOT is (u16)-1. Slot number in ocfs2 can be
never negative, so change s16 to u16.
Link: http://lkml.kernel.org/r/20200627001259.19757-1-junxiao.bi@xxxxxxxxxx
Signed-off-by: Junxiao Bi <junxiao.bi@xxxxxxxxxx>
Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Reviewed-by: Joseph Qi <joseph.qi@xxxxxxxxxxxxxxxxx>
Cc: Mark Fasheh <mark@xxxxxxxxxx>
Cc: Joel Becker <jlbec@xxxxxxxxxxxx>
Cc: Junxiao Bi <junxiao.bi@xxxxxxxxxx>
Cc: Changwei Ge <gechangwei@xxxxxxx>
Cc: Gang He <ghe@xxxxxxxx>
Cc: Jun Piao <piaojun@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/ocfs2/ocfs2.h | 4 ++--
fs/ocfs2/suballoc.c | 4 ++--
fs/ocfs2/super.c | 4 ++--
3 files changed, 6 insertions(+), 6 deletions(-)
--- a/fs/ocfs2/ocfs2.h~ocfs2-change-slot-number-type-s16-to-u16
+++ a/fs/ocfs2/ocfs2.h
@@ -327,8 +327,8 @@ struct ocfs2_super
spinlock_t osb_lock;
u32 s_next_generation;
unsigned long osb_flags;
- s16 s_inode_steal_slot;
- s16 s_meta_steal_slot;
+ u16 s_inode_steal_slot;
+ u16 s_meta_steal_slot;
atomic_t s_num_inodes_stolen;
atomic_t s_num_meta_stolen;
--- a/fs/ocfs2/suballoc.c~ocfs2-change-slot-number-type-s16-to-u16
+++ a/fs/ocfs2/suballoc.c
@@ -879,9 +879,9 @@ static void __ocfs2_set_steal_slot(struc
{
spin_lock(&osb->osb_lock);
if (type == INODE_ALLOC_SYSTEM_INODE)
- osb->s_inode_steal_slot = slot;
+ osb->s_inode_steal_slot = (u16)slot;
else if (type == EXTENT_ALLOC_SYSTEM_INODE)
- osb->s_meta_steal_slot = slot;
+ osb->s_meta_steal_slot = (u16)slot;
spin_unlock(&osb->osb_lock);
}
--- a/fs/ocfs2/super.c~ocfs2-change-slot-number-type-s16-to-u16
+++ a/fs/ocfs2/super.c
@@ -78,7 +78,7 @@ struct mount_options
unsigned long commit_interval;
unsigned long mount_opt;
unsigned int atime_quantum;
- signed short slot;
+ unsigned short slot;
int localalloc_opt;
unsigned int resv_level;
int dir_resv_level;
@@ -1349,7 +1349,7 @@ static int ocfs2_parse_options(struct su
goto bail;
}
if (option)
- mopt->slot = (s16)option;
+ mopt->slot = (u16)option;
break;
case Opt_commit:
if (match_int(&args[0], &option)) {
_
Patches currently in -mm which might be from junxiao.bi@xxxxxxxxxx are
ocfs2-change-slot-number-type-s16-to-u16.patch
