diff options
Diffstat (limited to 'fs/file_table.c')
| -rw-r--r-- | fs/file_table.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/fs/file_table.c b/fs/file_table.c index 861c03608e83..eed5ffad9997 100644 --- a/fs/file_table.c +++ b/fs/file_table.c @@ -136,6 +136,7 @@ static int __init init_fs_stat_sysctls(void) register_sysctl_init("fs", fs_stat_sysctls); if (IS_ENABLED(CONFIG_BINFMT_MISC)) { struct ctl_table_header *hdr; + hdr = register_sysctl_mount_point("fs/binfmt_misc"); kmemleak_not_leak(hdr); } @@ -156,6 +157,13 @@ static int init_file(struct file *f, int flags, const struct cred *cred) } spin_lock_init(&f->f_lock); + /* + * Note that f_pos_lock is only used for files raising + * FMODE_ATOMIC_POS and directories. Other files such as pipes + * don't need it and since f_pos_lock is in a union may reuse + * the space for other purposes. They are expected to initialize + * the respective member when opening the file. + */ mutex_init(&f->f_pos_lock); f->f_flags = flags; f->f_mode = OPEN_FMODE(flags); @@ -382,7 +390,9 @@ EXPORT_SYMBOL_GPL(alloc_file_pseudo_noaccount); struct file *alloc_file_clone(struct file *base, int flags, const struct file_operations *fops) { - struct file *f = alloc_file(&base->f_path, flags, fops); + struct file *f; + + f = alloc_file(&base->f_path, flags, fops); if (!IS_ERR(f)) { path_get(&f->f_path); f->f_mapping = base->f_mapping; |