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| author | Al Viro <viro@zeniv.linux.org.uk> | 2019-04-04 21:04:13 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2019-04-04 21:04:13 -0400 |
| commit | 9419a3191dcb27f24478d288abaab697228d28e6 (patch) | |
| tree | 7fd926e271483ad1270c5440d4839fc3711e31bb /fs/internal.h | |
| parent | 79a3aaa7b82e3106be97842dedfd8429248896e6 (diff) | |
| download | lwn-9419a3191dcb27f24478d288abaab697228d28e6.tar.gz lwn-9419a3191dcb27f24478d288abaab697228d28e6.zip | |
acct_on(): don't mess with freeze protection
What happens there is that we are replacing file->path.mnt of
a file we'd just opened with a clone and we need the write
count contribution to be transferred from original mount to
new one. That's it. We do *NOT* want any kind of freeze
protection for the duration of switchover.
IOW, we should just use __mnt_{want,drop}_write() for that
switchover; no need to bother with mnt_{want,drop}_write()
there.
Tested-by: Amir Goldstein <amir73il@gmail.com>
Reported-by: syzbot+2a73a6ea9507b7112141@syzkaller.appspotmail.com
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/internal.h')
| -rw-r--r-- | fs/internal.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/fs/internal.h b/fs/internal.h index 6a8b71643af4..2e7362837a6e 100644 --- a/fs/internal.h +++ b/fs/internal.h @@ -89,9 +89,7 @@ extern int sb_prepare_remount_readonly(struct super_block *); extern void __init mnt_init(void); -extern int __mnt_want_write(struct vfsmount *); extern int __mnt_want_write_file(struct file *); -extern void __mnt_drop_write(struct vfsmount *); extern void __mnt_drop_write_file(struct file *); /* |