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-rw-r--r--fs/9p/v9fs.c61
-rw-r--r--fs/9p/v9fs.h3
-rw-r--r--fs/9p/vfs_super.c6
-rw-r--r--fs/affs/super.c42
-rw-r--r--fs/afs/super.c45
-rw-r--r--fs/befs/linuxvfs.c24
-rw-r--r--fs/btrfs/super.c1
-rw-r--r--fs/dcache.c8
-rw-r--r--fs/debugfs/inode.c2
-rw-r--r--fs/efivarfs/super.c1
-rw-r--r--fs/filesystems.c3
-rw-r--r--fs/gfs2/dir.c3
-rw-r--r--fs/hugetlbfs/inode.c70
-rw-r--r--fs/isofs/inode.c51
-rw-r--r--fs/isofs/isofs.h3
-rw-r--r--fs/namei.c3
-rw-r--r--fs/namespace.c63
-rw-r--r--fs/nsfs.c3
-rw-r--r--fs/omfs/inode.c33
-rw-r--r--fs/orangefs/super.c15
-rw-r--r--fs/pipe.c3
-rw-r--r--fs/pstore/inode.c14
-rw-r--r--fs/pstore/internal.h3
-rw-r--r--fs/pstore/platform.c2
-rw-r--r--fs/ramfs/inode.c32
-rw-r--r--fs/reiserfs/super.c4
-rw-r--r--fs/super.c5
-rw-r--r--fs/tracefs/inode.c2
28 files changed, 370 insertions, 135 deletions
diff --git a/fs/9p/v9fs.c b/fs/9p/v9fs.c
index c202930086ed..8fb89ddc6cc7 100644
--- a/fs/9p/v9fs.c
+++ b/fs/9p/v9fs.c
@@ -33,6 +33,7 @@
#include <linux/parser.h>
#include <linux/idr.h>
#include <linux/slab.h>
+#include <linux/seq_file.h>
#include <net/9p/9p.h>
#include <net/9p/client.h>
#include <net/9p/transport.h>
@@ -82,6 +83,13 @@ static const match_table_t tokens = {
{Opt_err, NULL}
};
+static const char *const v9fs_cache_modes[nr__p9_cache_modes] = {
+ [CACHE_NONE] = "none",
+ [CACHE_MMAP] = "mmap",
+ [CACHE_LOOSE] = "loose",
+ [CACHE_FSCACHE] = "fscache",
+};
+
/* Interpret mount options for cache mode */
static int get_cache_mode(char *s)
{
@@ -104,6 +112,58 @@ static int get_cache_mode(char *s)
return version;
}
+/*
+ * Display the mount options in /proc/mounts.
+ */
+int v9fs_show_options(struct seq_file *m, struct dentry *root)
+{
+ struct v9fs_session_info *v9ses = root->d_sb->s_fs_info;
+
+ if (v9ses->debug)
+ seq_printf(m, ",debug=%x", v9ses->debug);
+ if (!uid_eq(v9ses->dfltuid, V9FS_DEFUID))
+ seq_printf(m, ",dfltuid=%u",
+ from_kuid_munged(&init_user_ns, v9ses->dfltuid));
+ if (!gid_eq(v9ses->dfltgid, V9FS_DEFGID))
+ seq_printf(m, ",dfltgid=%u",
+ from_kgid_munged(&init_user_ns, v9ses->dfltgid));
+ if (v9ses->afid != ~0)
+ seq_printf(m, ",afid=%u", v9ses->afid);
+ if (strcmp(v9ses->uname, V9FS_DEFUSER) != 0)
+ seq_printf(m, ",uname=%s", v9ses->uname);
+ if (strcmp(v9ses->aname, V9FS_DEFANAME) != 0)
+ seq_printf(m, ",aname=%s", v9ses->aname);
+ if (v9ses->nodev)
+ seq_puts(m, ",nodevmap");
+ if (v9ses->cache)
+ seq_printf(m, ",%s", v9fs_cache_modes[v9ses->cache]);
+#ifdef CONFIG_9P_FSCACHE
+ if (v9ses->cachetag && v9ses->cache == CACHE_FSCACHE)
+ seq_printf(m, ",cachetag=%s", v9ses->cachetag);
+#endif
+
+ switch (v9ses->flags & V9FS_ACCESS_MASK) {
+ case V9FS_ACCESS_USER:
+ seq_puts(m, ",access=user");
+ break;
+ case V9FS_ACCESS_ANY:
+ seq_puts(m, ",access=any");
+ break;
+ case V9FS_ACCESS_CLIENT:
+ seq_puts(m, ",access=client");
+ break;
+ case V9FS_ACCESS_SINGLE:
+ seq_printf(m, ",access=%u",
+ from_kuid_munged(&init_user_ns, v9ses->uid));
+ break;
+ }
+
+ if (v9ses->flags & V9FS_POSIX_ACL)
+ seq_puts(m, ",posixacl");
+
+ return p9_show_client_options(m, v9ses->clnt);
+}
+
/**
* v9fs_parse_options - parse mount options into session structure
* @v9ses: existing v9fs session information
@@ -230,6 +290,7 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts)
break;
case Opt_cachetag:
#ifdef CONFIG_9P_FSCACHE
+ kfree(v9ses->cachetag);
v9ses->cachetag = match_strdup(&args[0]);
#endif
break;
diff --git a/fs/9p/v9fs.h b/fs/9p/v9fs.h
index 76eaf49abd3a..982e017acadb 100644
--- a/fs/9p/v9fs.h
+++ b/fs/9p/v9fs.h
@@ -67,6 +67,7 @@ enum p9_cache_modes {
CACHE_MMAP,
CACHE_LOOSE,
CACHE_FSCACHE,
+ nr__p9_cache_modes
};
/**
@@ -137,6 +138,8 @@ static inline struct v9fs_inode *V9FS_I(const struct inode *inode)
return container_of(inode, struct v9fs_inode, vfs_inode);
}
+extern int v9fs_show_options(struct seq_file *m, struct dentry *root);
+
struct p9_fid *v9fs_session_init(struct v9fs_session_info *, const char *,
char *);
extern void v9fs_session_close(struct v9fs_session_info *v9ses);
diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c
index a0965fb587a5..8b75463cb211 100644
--- a/fs/9p/vfs_super.c
+++ b/fs/9p/vfs_super.c
@@ -33,7 +33,6 @@
#include <linux/string.h>
#include <linux/inet.h>
#include <linux/pagemap.h>
-#include <linux/seq_file.h>
#include <linux/mount.h>
#include <linux/idr.h>
#include <linux/sched.h>
@@ -104,7 +103,6 @@ v9fs_fill_super(struct super_block *sb, struct v9fs_session_info *v9ses,
sb->s_flags |= MS_POSIXACL;
#endif
- save_mount_options(sb, data);
return 0;
}
@@ -349,7 +347,7 @@ static const struct super_operations v9fs_super_ops = {
.destroy_inode = v9fs_destroy_inode,
.statfs = simple_statfs,
.evict_inode = v9fs_evict_inode,
- .show_options = generic_show_options,
+ .show_options = v9fs_show_options,
.umount_begin = v9fs_umount_begin,
.write_inode = v9fs_write_inode,
};
@@ -360,7 +358,7 @@ static const struct super_operations v9fs_super_ops_dotl = {
.statfs = v9fs_statfs,
.drop_inode = v9fs_drop_inode,
.evict_inode = v9fs_evict_inode,
- .show_options = generic_show_options,
+ .show_options = v9fs_show_options,
.umount_begin = v9fs_umount_begin,
.write_inode = v9fs_write_inode_dotl,
};
diff --git a/fs/affs/super.c b/fs/affs/super.c
index c2c27a8f128e..7bf47a41cb4f 100644
--- a/fs/affs/super.c
+++ b/fs/affs/super.c
@@ -20,9 +20,11 @@
#include <linux/slab.h>
#include <linux/writeback.h>
#include <linux/blkdev.h>
+#include <linux/seq_file.h>
#include "affs.h"
static int affs_statfs(struct dentry *dentry, struct kstatfs *buf);
+static int affs_show_options(struct seq_file *m, struct dentry *root);
static int affs_remount (struct super_block *sb, int *flags, char *data);
static void
@@ -159,7 +161,7 @@ static const struct super_operations affs_sops = {
.sync_fs = affs_sync_fs,
.statfs = affs_statfs,
.remount_fs = affs_remount,
- .show_options = generic_show_options,
+ .show_options = affs_show_options,
};
enum {
@@ -293,6 +295,40 @@ parse_options(char *options, kuid_t *uid, kgid_t *gid, int *mode, int *reserved,
return 1;
}
+static int affs_show_options(struct seq_file *m, struct dentry *root)
+{
+ struct super_block *sb = root->d_sb;
+ struct affs_sb_info *sbi = AFFS_SB(sb);
+
+ if (sb->s_blocksize)
+ seq_printf(m, ",bs=%lu", sb->s_blocksize);
+ if (affs_test_opt(sbi->s_flags, SF_SETMODE))
+ seq_printf(m, ",mode=%o", sbi->s_mode);
+ if (affs_test_opt(sbi->s_flags, SF_MUFS))
+ seq_puts(m, ",mufs");
+ if (affs_test_opt(sbi->s_flags, SF_NO_TRUNCATE))
+ seq_puts(m, ",nofilenametruncate");
+ if (affs_test_opt(sbi->s_flags, SF_PREFIX))
+ seq_printf(m, ",prefix=%s", sbi->s_prefix);
+ if (affs_test_opt(sbi->s_flags, SF_IMMUTABLE))
+ seq_puts(m, ",protect");
+ if (sbi->s_reserved != 2)
+ seq_printf(m, ",reserved=%u", sbi->s_reserved);
+ if (sbi->s_root_block != (sbi->s_reserved + sbi->s_partition_size - 1) / 2)
+ seq_printf(m, ",root=%u", sbi->s_root_block);
+ if (affs_test_opt(sbi->s_flags, SF_SETGID))
+ seq_printf(m, ",setgid=%u",
+ from_kgid_munged(&init_user_ns, sbi->s_gid));
+ if (affs_test_opt(sbi->s_flags, SF_SETUID))
+ seq_printf(m, ",setuid=%u",
+ from_kuid_munged(&init_user_ns, sbi->s_uid));
+ if (affs_test_opt(sbi->s_flags, SF_VERBOSE))
+ seq_puts(m, ",verbose");
+ if (sbi->s_volume[0])
+ seq_printf(m, ",volume=%s", sbi->s_volume);
+ return 0;
+}
+
/* This function definitely needs to be split up. Some fine day I'll
* hopefully have the guts to do so. Until then: sorry for the mess.
*/
@@ -316,8 +352,6 @@ static int affs_fill_super(struct super_block *sb, void *data, int silent)
u8 sig[4];
int ret;
- save_mount_options(sb, data);
-
pr_debug("read_super(%s)\n", data ? (const char *)data : "no options");
sb->s_magic = AFFS_SUPER_MAGIC;
@@ -548,8 +582,6 @@ affs_remount(struct super_block *sb, int *flags, char *data)
}
flush_delayed_work(&sbi->sb_work);
- if (new_opts)
- replace_mount_options(sb, new_opts);
sbi->s_flags = mount_flags;
sbi->s_mode = mode;
diff --git a/fs/afs/super.c b/fs/afs/super.c
index 67680c2d96cf..689173c0a682 100644
--- a/fs/afs/super.c
+++ b/fs/afs/super.c
@@ -37,6 +37,8 @@ static void afs_kill_super(struct super_block *sb);
static struct inode *afs_alloc_inode(struct super_block *sb);
static void afs_destroy_inode(struct inode *inode);
static int afs_statfs(struct dentry *dentry, struct kstatfs *buf);
+static int afs_show_devname(struct seq_file *m, struct dentry *root);
+static int afs_show_options(struct seq_file *m, struct dentry *root);
struct file_system_type afs_fs_type = {
.owner = THIS_MODULE,
@@ -53,7 +55,8 @@ static const struct super_operations afs_super_ops = {
.drop_inode = afs_drop_inode,
.destroy_inode = afs_destroy_inode,
.evict_inode = afs_evict_inode,
- .show_options = generic_show_options,
+ .show_devname = afs_show_devname,
+ .show_options = afs_show_options,
};
static struct kmem_cache *afs_inode_cachep;
@@ -136,6 +139,45 @@ void __exit afs_fs_exit(void)
}
/*
+ * Display the mount device name in /proc/mounts.
+ */
+static int afs_show_devname(struct seq_file *m, struct dentry *root)
+{
+ struct afs_super_info *as = root->d_sb->s_fs_info;
+ struct afs_volume *volume = as->volume;
+ struct afs_cell *cell = volume->cell;
+ const char *suf = "";
+ char pref = '%';
+
+ switch (volume->type) {
+ case AFSVL_RWVOL:
+ break;
+ case AFSVL_ROVOL:
+ pref = '#';
+ if (volume->type_force)
+ suf = ".readonly";
+ break;
+ case AFSVL_BACKVOL:
+ pref = '#';
+ suf = ".backup";
+ break;
+ }
+
+ seq_printf(m, "%c%s:%s%s", pref, cell->name, volume->vlocation->vldb.name, suf);
+ return 0;
+}
+
+/*
+ * Display the mount options in /proc/mounts.
+ */
+static int afs_show_options(struct seq_file *m, struct dentry *root)
+{
+ if (test_bit(AFS_VNODE_AUTOCELL, &AFS_FS_I(d_inode(root))->flags))
+ seq_puts(m, "autocell");
+ return 0;
+}
+
+/*
* parse the mount options
* - this function has been shamelessly adapted from the ext3 fs which
* shamelessly adapted it from the msdos fs
@@ -427,7 +469,6 @@ static struct dentry *afs_mount(struct file_system_type *fs_type,
deactivate_locked_super(sb);
goto error;
}
- save_mount_options(sb, new_opts);
sb->s_flags |= MS_ACTIVE;
} else {
_debug("reuse");
diff --git a/fs/befs/linuxvfs.c b/fs/befs/linuxvfs.c
index 63e7c4760bfb..4a4a5a366158 100644
--- a/fs/befs/linuxvfs.c
+++ b/fs/befs/linuxvfs.c
@@ -20,6 +20,7 @@
#include <linux/sched.h>
#include <linux/cred.h>
#include <linux/exportfs.h>
+#include <linux/seq_file.h>
#include "befs.h"
#include "btree.h"
@@ -53,6 +54,7 @@ static int befs_nls2utf(struct super_block *sb, const char *in, int in_len,
static void befs_put_super(struct super_block *);
static int befs_remount(struct super_block *, int *, char *);
static int befs_statfs(struct dentry *, struct kstatfs *);
+static int befs_show_options(struct seq_file *, struct dentry *);
static int parse_options(char *, struct befs_mount_options *);
static struct dentry *befs_fh_to_dentry(struct super_block *sb,
struct fid *fid, int fh_len, int fh_type);
@@ -66,7 +68,7 @@ static const struct super_operations befs_sops = {
.put_super = befs_put_super, /* uninit super */
.statfs = befs_statfs, /* statfs */
.remount_fs = befs_remount,
- .show_options = generic_show_options,
+ .show_options = befs_show_options,
};
/* slab cache for befs_inode_info objects */
@@ -771,6 +773,24 @@ parse_options(char *options, struct befs_mount_options *opts)
return 1;
}
+static int befs_show_options(struct seq_file *m, struct dentry *root)
+{
+ struct befs_sb_info *befs_sb = BEFS_SB(root->d_sb);
+ struct befs_mount_options *opts = &befs_sb->mount_opts;
+
+ if (!uid_eq(opts->uid, GLOBAL_ROOT_UID))
+ seq_printf(m, ",uid=%u",
+ from_kuid_munged(&init_user_ns, opts->uid));
+ if (!gid_eq(opts->gid, GLOBAL_ROOT_GID))
+ seq_printf(m, ",gid=%u",
+ from_kgid_munged(&init_user_ns, opts->gid));
+ if (opts->iocharset)
+ seq_printf(m, ",charset=%s", opts->iocharset);
+ if (opts->debug)
+ seq_puts(m, ",debug");
+ return 0;
+}
+
/* This function has the responsibiltiy of getting the
* filesystem ready for unmounting.
* Basically, we free everything that we allocated in
@@ -804,8 +824,6 @@ befs_fill_super(struct super_block *sb, void *data, int silent)
const off_t x86_sb_off = 512;
int blocksize;
- save_mount_options(sb, data);
-
sb->s_fs_info = kzalloc(sizeof(*befs_sb), GFP_KERNEL);
if (sb->s_fs_info == NULL)
goto unacquire_none;
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 74e47794e63f..12540b6104b5 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -1154,7 +1154,6 @@ static int btrfs_fill_super(struct super_block *sb,
goto fail_close;
}
- save_mount_options(sb, data);
cleancache_init_fs(sb);
sb->s_flags |= MS_ACTIVE;
return 0;
diff --git a/fs/dcache.c b/fs/dcache.c
index 6c30be668487..f90141387f01 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -90,6 +90,11 @@ EXPORT_SYMBOL(rename_lock);
static struct kmem_cache *dentry_cache __read_mostly;
+const struct qstr empty_name = QSTR_INIT("", 0);
+EXPORT_SYMBOL(empty_name);
+const struct qstr slash_name = QSTR_INIT("/", 1);
+EXPORT_SYMBOL(slash_name);
+
/*
* This is the single most critical data structure when it comes
* to the dcache: the hashtable for lookups. Somebody should try
@@ -1606,8 +1611,7 @@ struct dentry *__d_alloc(struct super_block *sb, const struct qstr *name)
*/
dentry->d_iname[DNAME_INLINE_LEN-1] = 0;
if (unlikely(!name)) {
- static const struct qstr anon = QSTR_INIT("/", 1);
- name = &anon;
+ name = &slash_name;
dname = dentry->d_iname;
} else if (name->len > DNAME_INLINE_LEN-1) {
size_t size = offsetof(struct external_name, name[1]);
diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c
index a0e4e2f7e0be..c59f015f386e 100644
--- a/fs/debugfs/inode.c
+++ b/fs/debugfs/inode.c
@@ -203,8 +203,6 @@ static int debug_fill_super(struct super_block *sb, void *data, int silent)
struct debugfs_fs_info *fsi;
int err;
- save_mount_options(sb, data);
-
fsi = kzalloc(sizeof(struct debugfs_fs_info), GFP_KERNEL);
sb->s_fs_info = fsi;
if (!fsi) {
diff --git a/fs/efivarfs/super.c b/fs/efivarfs/super.c
index d7a7c53803c1..5b68e4294faa 100644
--- a/fs/efivarfs/super.c
+++ b/fs/efivarfs/super.c
@@ -29,7 +29,6 @@ static const struct super_operations efivarfs_ops = {
.statfs = simple_statfs,
.drop_inode = generic_delete_inode,
.evict_inode = efivarfs_evict_inode,
- .show_options = generic_show_options,
};
static struct super_block *efivarfs_sb;
diff --git a/fs/filesystems.c b/fs/filesystems.c
index 8b99955e3504..a920ad2629ac 100644
--- a/fs/filesystems.c
+++ b/fs/filesystems.c
@@ -33,9 +33,10 @@ static struct file_system_type *file_systems;
static DEFINE_RWLOCK(file_systems_lock);
/* WARNING: This can be used only if we _already_ own a reference */
-void get_filesystem(struct file_system_type *fs)
+struct file_system_type *get_filesystem(struct file_system_type *fs)
{
__module_get(fs->owner);
+ return fs;
}
void put_filesystem(struct file_system_type *fs)
diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c
index db427658ccd9..5ee2e2f8576c 100644
--- a/fs/gfs2/dir.c
+++ b/fs/gfs2/dir.c
@@ -872,7 +872,6 @@ static struct gfs2_leaf *new_leaf(struct inode *inode, struct buffer_head **pbh,
struct buffer_head *bh;
struct gfs2_leaf *leaf;
struct gfs2_dirent *dent;
- struct qstr name = { .name = "" };
struct timespec tv = current_time(inode);
error = gfs2_alloc_blocks(ip, &bn, &n, 0, NULL);
@@ -896,7 +895,7 @@ static struct gfs2_leaf *new_leaf(struct inode *inode, struct buffer_head **pbh,
leaf->lf_sec = cpu_to_be64(tv.tv_sec);
memset(leaf->lf_reserved2, 0, sizeof(leaf->lf_reserved2));
dent = (struct gfs2_dirent *)(leaf+1);
- gfs2_qstr2dirent(&name, bh->b_size - sizeof(struct gfs2_leaf), dent);
+ gfs2_qstr2dirent(&empty_name, bh->b_size - sizeof(struct gfs2_leaf), dent);
*pbh = bh;
return leaf;
}
diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index 52388611635e..28d2753be094 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -46,13 +46,13 @@ static const struct inode_operations hugetlbfs_dir_inode_operations;
static const struct inode_operations hugetlbfs_inode_operations;
struct hugetlbfs_config {
- kuid_t uid;
- kgid_t gid;
- umode_t mode;
- long max_hpages;
- long nr_inodes;
- struct hstate *hstate;
- long min_hpages;
+ struct hstate *hstate;
+ long max_hpages;
+ long nr_inodes;
+ long min_hpages;
+ kuid_t uid;
+ kgid_t gid;
+ umode_t mode;
};
struct hugetlbfs_inode_info {
@@ -861,6 +861,46 @@ static int hugetlbfs_error_remove_page(struct address_space *mapping,
return 0;
}
+/*
+ * Display the mount options in /proc/mounts.
+ */
+static int hugetlbfs_show_options(struct seq_file *m, struct dentry *root)
+{
+ struct hugetlbfs_sb_info *sbinfo = HUGETLBFS_SB(root->d_sb);
+ struct hugepage_subpool *spool = sbinfo->spool;
+ unsigned long hpage_size = huge_page_size(sbinfo->hstate);
+ unsigned hpage_shift = huge_page_shift(sbinfo->hstate);
+ char mod;
+
+ if (!uid_eq(sbinfo->uid, GLOBAL_ROOT_UID))
+ seq_printf(m, ",uid=%u",
+ from_kuid_munged(&init_user_ns, sbinfo->uid));
+ if (!gid_eq(sbinfo->gid, GLOBAL_ROOT_GID))
+ seq_printf(m, ",gid=%u",
+ from_kgid_munged(&init_user_ns, sbinfo->gid));
+ if (sbinfo->mode != 0755)
+ seq_printf(m, ",mode=%o", sbinfo->mode);
+ if (sbinfo->max_inodes != -1)
+ seq_printf(m, ",nr_inodes=%lu", sbinfo->max_inodes);
+
+ hpage_size /= 1024;
+ mod = 'K';
+ if (hpage_size >= 1024) {
+ hpage_size /= 1024;
+ mod = 'M';
+ }
+ seq_printf(m, ",pagesize=%lu%c", hpage_size, mod);
+ if (spool) {
+ if (spool->max_hpages != -1)
+ seq_printf(m, ",size=%llu",
+ (unsigned long long)spool->max_hpages << hpage_shift);
+ if (spool->min_hpages != -1)
+ seq_printf(m, ",min_size=%llu",
+ (unsigned long long)spool->min_hpages << hpage_shift);
+ }
+ return 0;
+}
+
static int hugetlbfs_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct hugetlbfs_sb_info *sbinfo = HUGETLBFS_SB(dentry->d_sb);
@@ -1019,19 +1059,19 @@ static const struct super_operations hugetlbfs_ops = {
.evict_inode = hugetlbfs_evict_inode,
.statfs = hugetlbfs_statfs,
.put_super = hugetlbfs_put_super,
- .show_options = generic_show_options,
+ .show_options = hugetlbfs_show_options,
};
-enum { NO_SIZE, SIZE_STD, SIZE_PERCENT };
+enum hugetlbfs_size_type { NO_SIZE, SIZE_STD, SIZE_PERCENT };
/*
* Convert size option passed from command line to number of huge pages
* in the pool specified by hstate. Size option could be in bytes
* (val_type == SIZE_STD) or percentage of the pool (val_type == SIZE_PERCENT).
*/
-static long long
+static long
hugetlbfs_size_to_hpages(struct hstate *h, unsigned long long size_opt,
- int val_type)
+ enum hugetlbfs_size_type val_type)
{
if (val_type == NO_SIZE)
return -1;
@@ -1053,7 +1093,7 @@ hugetlbfs_parse_options(char *options, struct hugetlbfs_config *pconfig)
substring_t args[MAX_OPT_ARGS];
int option;
unsigned long long max_size_opt = 0, min_size_opt = 0;
- int max_val_type = NO_SIZE, min_val_type = NO_SIZE;
+ enum hugetlbfs_size_type max_val_type = NO_SIZE, min_val_type = NO_SIZE;
if (!options)
return 0;
@@ -1167,8 +1207,6 @@ hugetlbfs_fill_super(struct super_block *sb, void *data, int silent)
struct hugetlbfs_config config;
struct hugetlbfs_sb_info *sbinfo;
- save_mount_options(sb, data);
-
config.max_hpages = -1; /* No limit on size by default */
config.nr_inodes = -1; /* No limit on number of inodes by default */
config.uid = current_fsuid();
@@ -1189,6 +1227,10 @@ hugetlbfs_fill_super(struct super_block *sb, void *data, int silent)
sbinfo->max_inodes = config.nr_inodes;
sbinfo->free_inodes = config.nr_inodes;
sbinfo->spool = NULL;
+ sbinfo->uid = config.uid;
+ sbinfo->gid = config.gid;
+ sbinfo->mode = config.mode;
+
/*
* Allocate and initialize subpool if maximum or minimum size is
* specified. Any needed reservations (for minimim size) are taken
diff --git a/fs/isofs/inode.c b/fs/isofs/inode.c
index 020ba0936146..8cf898a59730 100644
--- a/fs/isofs/inode.c
+++ b/fs/isofs/inode.c
@@ -23,6 +23,7 @@
#include <linux/parser.h>
#include <linux/mpage.h>
#include <linux/user_namespace.h>
+#include <linux/seq_file.h>
#include "isofs.h"
#include "zisofs.h"
@@ -57,6 +58,7 @@ static void isofs_put_super(struct super_block *sb)
static int isofs_read_inode(struct inode *, int relocated);
static int isofs_statfs (struct dentry *, struct kstatfs *);
+static int isofs_show_options(struct seq_file *, struct dentry *);
static struct kmem_cache *isofs_inode_cachep;
@@ -123,7 +125,7 @@ static const struct super_operations isofs_sops = {
.put_super = isofs_put_super,
.statfs = isofs_statfs,
.remount_fs = isofs_remount,
- .show_options = generic_show_options,
+ .show_options = isofs_show_options,
};
@@ -473,6 +475,48 @@ static int parse_options(char *options, struct iso9660_options *popt)
}
/*
+ * Display the mount options in /proc/mounts.
+ */
+static int isofs_show_options(struct seq_file *m, struct dentry *root)
+{
+ struct isofs_sb_info *sbi = ISOFS_SB(root->d_sb);
+
+ if (!sbi->s_rock) seq_puts(m, ",norock");
+ else if (!sbi->s_joliet_level) seq_puts(m, ",nojoliet");
+ if (sbi->s_cruft) seq_puts(m, ",cruft");
+ if (sbi->s_hide) seq_puts(m, ",hide");
+ if (sbi->s_nocompress) seq_puts(m, ",nocompress");
+ if (sbi->s_overriderockperm) seq_puts(m, ",overriderockperm");
+ if (sbi->s_showassoc) seq_puts(m, ",showassoc");
+ if (sbi->s_utf8) seq_puts(m, ",utf8");
+
+ if (sbi->s_check) seq_printf(m, ",check=%c", sbi->s_check);
+ if (sbi->s_mapping) seq_printf(m, ",map=%c", sbi->s_mapping);
+ if (sbi->s_session != 255) seq_printf(m, ",session=%u", sbi->s_session - 1);
+ if (sbi->s_sbsector != -1) seq_printf(m, ",sbsector=%u", sbi->s_sbsector);
+
+ if (root->d_sb->s_blocksize != 1024)
+ seq_printf(m, ",blocksize=%lu", root->d_sb->s_blocksize);
+
+ if (sbi->s_uid_set)
+ seq_printf(m, ",uid=%u",
+ from_kuid_munged(&init_user_ns, sbi->s_uid));
+ if (sbi->s_gid_set)
+ seq_printf(m, ",gid=%u",
+ from_kgid_munged(&init_user_ns, sbi->s_gid));
+
+ if (sbi->s_dmode != ISOFS_INVALID_MODE)
+ seq_printf(m, ",dmode=%o", sbi->s_dmode);
+ if (sbi->s_fmode != ISOFS_INVALID_MODE)
+ seq_printf(m, ",fmode=%o", sbi->s_fmode);
+
+ if (sbi->s_nls_iocharset &&
+ strcmp(sbi->s_nls_iocharset->charset, CONFIG_NLS_DEFAULT) != 0)
+ seq_printf(m, ",iocharset=%s", sbi->s_nls_iocharset->charset);
+ return 0;
+}
+
+/*
* look if the driver can tell the multi session redirection value
*
* don't change this if you don't know what you do, please!
@@ -583,8 +627,6 @@ static int isofs_fill_super(struct super_block *s, void *data, int silent)
int table, error = -EINVAL;
unsigned int vol_desc_start;
- save_mount_options(s, data);
-
sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);
if (!sbi)
return -ENOMEM;
@@ -605,6 +647,8 @@ static int isofs_fill_super(struct super_block *s, void *data, int silent)
opt.blocksize = sb_min_blocksize(s, opt.blocksize);
sbi->s_high_sierra = 0; /* default is iso9660 */
+ sbi->s_session = opt.session;
+ sbi->s_sbsector = opt.sbsector;
vol_desc_start = (opt.sbsector != -1) ?
opt.sbsector : isofs_get_last_session(s,opt.session);
@@ -911,6 +955,7 @@ root_found:
table += 2;
if (opt.check == 'r')
table++;
+ sbi->s_check = opt.check;
if (table)
s->s_d_op = &isofs_dentry_ops[table - 1];
diff --git a/fs/isofs/isofs.h b/fs/isofs/isofs.h
index 0ac4c1f73fbd..133a456b0425 100644
--- a/fs/isofs/isofs.h
+++ b/fs/isofs/isofs.h
@@ -36,8 +36,11 @@ struct isofs_sb_info {
unsigned long s_max_size;
int s_rock_offset; /* offset of SUSP fields within SU area */
+ s32 s_sbsector;
unsigned char s_joliet_level;
unsigned char s_mapping;
+ unsigned char s_check;
+ unsigned char s_session;
unsigned int s_high_sierra:1;
unsigned int s_rock:2;
unsigned int s_utf8:1;
diff --git a/fs/namei.c b/fs/namei.c
index e0b46eb0e212..88fd38d1e3e7 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -3400,7 +3400,6 @@ out:
struct dentry *vfs_tmpfile(struct dentry *dentry, umode_t mode, int open_flag)
{
- static const struct qstr name = QSTR_INIT("/", 1);
struct dentry *child = NULL;
struct inode *dir = dentry->d_inode;
struct inode *inode;
@@ -3414,7 +3413,7 @@ struct dentry *vfs_tmpfile(struct dentry *dentry, umode_t mode, int open_flag)
if (!dir->i_op->tmpfile)
goto out_err;
error = -ENOMEM;
- child = d_alloc(dentry, &name);
+ child = d_alloc(dentry, &slash_name);
if (unlikely(!child))
goto out_err;
error = dir->i_op->tmpfile(dir, child, mode);
diff --git a/fs/namespace.c b/fs/namespace.c
index 81f934b5d571..f8893dc6a989 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -1238,65 +1238,6 @@ struct vfsmount *mnt_clone_internal(const struct path *path)
return &p->mnt;
}
-static inline void mangle(struct seq_file *m, const char *s)
-{
- seq_escape(m, s, " \t\n\\");
-}
-
-/*
- * Simple .show_options callback for filesystems which don't want to
- * implement more complex mount option showing.
- *
- * See also save_mount_options().
- */
-int generic_show_options(struct seq_file *m, struct dentry *root)
-{
- const char *options;
-
- rcu_read_lock();
- options = rcu_dereference(root->d_sb->s_options);
-
- if (options != NULL && options[0]) {
- seq_putc(m, ',');
- mangle(m, options);
- }
- rcu_read_unlock();
-
- return 0;
-}
-EXPORT_SYMBOL(generic_show_options);
-
-/*
- * If filesystem uses generic_show_options(), this function should be
- * called from the fill_super() callback.
- *
- * The .remount_fs callback usually needs to be handled in a special
- * way, to make sure, that previous options are not overwritten if the
- * remount fails.
- *
- * Also note, that if the filesystem's .remount_fs function doesn't
- * reset all options to their default value, but changes only newly
- * given options, then the displayed options will not reflect reality
- * any more.
- */
-void save_mount_options(struct super_block *sb, char *options)
-{
- BUG_ON(sb->s_options);
- rcu_assign_pointer(sb->s_options, kstrdup(options, GFP_KERNEL));
-}
-EXPORT_SYMBOL(save_mount_options);
-
-void replace_mount_options(struct super_block *sb, char *options)
-{
- char *old = sb->s_options;
- rcu_assign_pointer(sb->s_options, options);
- if (old) {
- synchronize_rcu();
- kfree(old);
- }
-}
-EXPORT_SYMBOL(replace_mount_options);
-
#ifdef CONFIG_PROC_FS
/* iterator; we want it to have access to namespace_sem, thus here... */
static void *m_start(struct seq_file *m, loff_t *pos)
@@ -1657,7 +1598,7 @@ out_unlock:
namespace_unlock();
}
-/*
+/*
* Is the caller allowed to modify his namespace?
*/
static inline bool may_mount(void)
@@ -2211,7 +2152,7 @@ static int do_loopback(struct path *path, const char *old_name,
err = -EINVAL;
if (mnt_ns_loop(old_path.dentry))
- goto out;
+ goto out;
mp = lock_mount(path);
err = PTR_ERR(mp);
diff --git a/fs/nsfs.c b/fs/nsfs.c
index f3db56e83dd2..08127a2b8559 100644
--- a/fs/nsfs.c
+++ b/fs/nsfs.c
@@ -53,7 +53,6 @@ static void nsfs_evict(struct inode *inode)
static void *__ns_get_path(struct path *path, struct ns_common *ns)
{
struct vfsmount *mnt = nsfs_mnt;
- struct qstr qname = { .name = "", };
struct dentry *dentry;
struct inode *inode;
unsigned long d;
@@ -85,7 +84,7 @@ slow:
inode->i_fop = &ns_file_operations;
inode->i_private = ns;
- dentry = d_alloc_pseudo(mnt->mnt_sb, &qname);
+ dentry = d_alloc_pseudo(mnt->mnt_sb, &empty_name);
if (!dentry) {
iput(inode);
return ERR_PTR(-ENOMEM);
diff --git a/fs/omfs/inode.c b/fs/omfs/inode.c
index 8c9034ee7383..ee14af9e26f2 100644
--- a/fs/omfs/inode.c
+++ b/fs/omfs/inode.c
@@ -13,6 +13,7 @@
#include <linux/buffer_head.h>
#include <linux/vmalloc.h>
#include <linux/writeback.h>
+#include <linux/seq_file.h>
#include <linux/crc-itu-t.h>
#include "omfs.h"
@@ -290,12 +291,40 @@ static int omfs_statfs(struct dentry *dentry, struct kstatfs *buf)
return 0;
}
+/*
+ * Display the mount options in /proc/mounts.
+ */
+static int omfs_show_options(struct seq_file *m, struct dentry *root)
+{
+ struct omfs_sb_info *sbi = OMFS_SB(root->d_sb);
+ umode_t cur_umask = current_umask();
+
+ if (!uid_eq(sbi->s_uid, current_uid()))
+ seq_printf(m, ",uid=%u",
+ from_kuid_munged(&init_user_ns, sbi->s_uid));
+ if (!gid_eq(sbi->s_gid, current_gid()))
+ seq_printf(m, ",gid=%u",
+ from_kgid_munged(&init_user_ns, sbi->s_gid));
+
+ if (sbi->s_dmask == sbi->s_fmask) {
+ if (sbi->s_fmask != cur_umask)
+ seq_printf(m, ",umask=%o", sbi->s_fmask);
+ } else {
+ if (sbi->s_dmask != cur_umask)
+ seq_printf(m, ",dmask=%o", sbi->s_dmask);
+ if (sbi->s_fmask != cur_umask)
+ seq_printf(m, ",fmask=%o", sbi->s_fmask);
+ }
+
+ return 0;
+}
+
static const struct super_operations omfs_sops = {
.write_inode = omfs_write_inode,
.evict_inode = omfs_evict_inode,
.put_super = omfs_put_super,
.statfs = omfs_statfs,
- .show_options = generic_show_options,
+ .show_options = omfs_show_options,
};
/*
@@ -434,8 +463,6 @@ static int omfs_fill_super(struct super_block *sb, void *data, int silent)
struct inode *root;
int ret = -EINVAL;
- save_mount_options(sb, (char *) data);
-
sbi = kzalloc(sizeof(struct omfs_sb_info), GFP_KERNEL);
if (!sbi)
return -ENOMEM;
diff --git a/fs/orangefs/super.c b/fs/orangefs/super.c
index 5c7c273e17ec..5a1bed6c8c6a 100644
--- a/fs/orangefs/super.c
+++ b/fs/orangefs/super.c
@@ -35,6 +35,19 @@ static const match_table_t tokens = {
uint64_t orangefs_features;
+static int orangefs_show_options(struct seq_file *m, struct dentry *root)
+{
+ struct orangefs_sb_info_s *orangefs_sb = ORANGEFS_SB(root->d_sb);
+
+ if (root->d_sb->s_flags & MS_POSIXACL)
+ seq_puts(m, ",acl");
+ if (orangefs_sb->flags & ORANGEFS_OPT_INTR)
+ seq_puts(m, ",intr");
+ if (orangefs_sb->flags & ORANGEFS_OPT_LOCAL_LOCK)
+ seq_puts(m, ",local_lock");
+ return 0;
+}
+
static int parse_mount_options(struct super_block *sb, char *options,
int silent)
{
@@ -305,7 +318,7 @@ static const struct super_operations orangefs_s_ops = {
.drop_inode = generic_delete_inode,
.statfs = orangefs_statfs,
.remount_fs = orangefs_remount_fs,
- .show_options = generic_show_options,
+ .show_options = orangefs_show_options,
};
static struct dentry *orangefs_fh_to_dentry(struct super_block *sb,
diff --git a/fs/pipe.c b/fs/pipe.c
index 73b84baf58f8..97e5be897753 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -739,13 +739,12 @@ int create_pipe_files(struct file **res, int flags)
struct inode *inode = get_pipe_inode();
struct file *f;
struct path path;
- static struct qstr name = { .name = "" };
if (!inode)
return -ENFILE;
err = -ENOMEM;
- path.dentry = d_alloc_pseudo(pipe_mnt->mnt_sb, &name);
+ path.dentry = d_alloc_pseudo(pipe_mnt->mnt_sb, &empty_name);
if (!path.dentry)
goto err_inode;
path.mnt = mntget(pipe_mnt);
diff --git a/fs/pstore/inode.c b/fs/pstore/inode.c
index 4d02c3b65061..fefd22611cf6 100644
--- a/fs/pstore/inode.c
+++ b/fs/pstore/inode.c
@@ -283,6 +283,16 @@ static void parse_options(char *options)
}
}
+/*
+ * Display the mount options in /proc/mounts.
+ */
+static int pstore_show_options(struct seq_file *m, struct dentry *root)
+{
+ if (kmsg_bytes != PSTORE_DEFAULT_KMSG_BYTES)
+ seq_printf(m, ",kmsg_bytes=%lu", kmsg_bytes);
+ return 0;
+}
+
static int pstore_remount(struct super_block *sb, int *flags, char *data)
{
sync_filesystem(sb);
@@ -296,7 +306,7 @@ static const struct super_operations pstore_ops = {
.drop_inode = generic_delete_inode,
.evict_inode = pstore_evict_inode,
.remount_fs = pstore_remount,
- .show_options = generic_show_options,
+ .show_options = pstore_show_options,
};
static struct super_block *pstore_sb;
@@ -448,8 +458,6 @@ static int pstore_fill_super(struct super_block *sb, void *data, int silent)
{
struct inode *inode;
- save_mount_options(sb, data);
-
pstore_sb = sb;
sb->s_maxbytes = MAX_LFS_FILESIZE;
diff --git a/fs/pstore/internal.h b/fs/pstore/internal.h
index 58051265626f..7f4e48c8d188 100644
--- a/fs/pstore/internal.h
+++ b/fs/pstore/internal.h
@@ -5,6 +5,9 @@
#include <linux/time.h>
#include <linux/pstore.h>
+#define PSTORE_DEFAULT_KMSG_BYTES 10240
+extern unsigned long kmsg_bytes;
+
#ifdef CONFIG_PSTORE_FTRACE
extern void pstore_register_ftrace(void);
extern void pstore_unregister_ftrace(void);
diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c
index 1b6e0ff6bff5..2b21d180157c 100644
--- a/fs/pstore/platform.c
+++ b/fs/pstore/platform.c
@@ -99,7 +99,7 @@ static char *big_oops_buf;
static size_t big_oops_buf_sz;
/* How much of the console log to snapshot */
-static unsigned long kmsg_bytes = 10240;
+unsigned long kmsg_bytes = PSTORE_DEFAULT_KMSG_BYTES;
void pstore_set_kmsg_bytes(int bytes)
{
diff --git a/fs/ramfs/inode.c b/fs/ramfs/inode.c
index 26e45863e499..11201b2d06b9 100644
--- a/fs/ramfs/inode.c
+++ b/fs/ramfs/inode.c
@@ -38,6 +38,14 @@
#include <linux/uaccess.h>
#include "internal.h"
+struct ramfs_mount_opts {
+ umode_t mode;
+};
+
+struct ramfs_fs_info {
+ struct ramfs_mount_opts mount_opts;
+};
+
#define RAMFS_DEFAULT_MODE 0755
static const struct super_operations ramfs_ops;
@@ -149,14 +157,22 @@ static const struct inode_operations ramfs_dir_inode_operations = {
.rename = simple_rename,
};
+/*
+ * Display the mount options in /proc/mounts.
+ */
+static int ramfs_show_options(struct seq_file *m, struct dentry *root)
+{
+ struct ramfs_fs_info *fsi = root->d_sb->s_fs_info;
+
+ if (fsi->mount_opts.mode != RAMFS_DEFAULT_MODE)
+ seq_printf(m, ",mode=%o", fsi->mount_opts.mode);
+ return 0;
+}
+
static const struct super_operations ramfs_ops = {
.statfs = simple_statfs,
.drop_inode = generic_delete_inode,
- .show_options = generic_show_options,
-};
-
-struct ramfs_mount_opts {
- umode_t mode;
+ .show_options = ramfs_show_options,
};
enum {
@@ -169,10 +185,6 @@ static const match_table_t tokens = {
{Opt_err, NULL}
};
-struct ramfs_fs_info {
- struct ramfs_mount_opts mount_opts;
-};
-
static int ramfs_parse_options(char *data, struct ramfs_mount_opts *opts)
{
substring_t args[MAX_OPT_ARGS];
@@ -211,8 +223,6 @@ int ramfs_fill_super(struct super_block *sb, void *data, int silent)
struct inode *inode;
int err;
- save_mount_options(sb, data);
-
fsi = kzalloc(sizeof(struct ramfs_fs_info), GFP_KERNEL);
sb->s_fs_info = fsi;
if (!fsi)
diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c
index 685f1e056998..306e4e9d172d 100644
--- a/fs/reiserfs/super.c
+++ b/fs/reiserfs/super.c
@@ -1599,8 +1599,6 @@ static int reiserfs_remount(struct super_block *s, int *mount_flags, char *arg)
}
out_ok_unlocked:
- if (new_opts)
- replace_mount_options(s, new_opts);
return 0;
out_err_unlock:
@@ -1916,8 +1914,6 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
char *qf_names[REISERFS_MAXQUOTAS] = {};
unsigned int qfmt = 0;
- save_mount_options(s, data);
-
sbi = kzalloc(sizeof(struct reiserfs_sb_info), GFP_KERNEL);
if (!sbi)
return -ENOMEM;
diff --git a/fs/super.c b/fs/super.c
index adb0c0de428c..6bc3352adcf3 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -168,7 +168,6 @@ static void destroy_super(struct super_block *s)
WARN_ON(!list_empty(&s->s_mounts));
put_user_ns(s->s_user_ns);
kfree(s->s_subtype);
- kfree(s->s_options);
call_rcu(&s->rcu, destroy_super_rcu);
}
@@ -508,7 +507,7 @@ retry:
return ERR_PTR(-ENOMEM);
goto retry;
}
-
+
err = set(s, data);
if (err) {
spin_unlock(&sb_lock);
@@ -771,7 +770,7 @@ restart:
spin_unlock(&sb_lock);
return NULL;
}
-
+
struct super_block *user_get_super(dev_t dev)
{
struct super_block *sb;
diff --git a/fs/tracefs/inode.c b/fs/tracefs/inode.c
index 328e89c2cf83..bea8ad876bf9 100644
--- a/fs/tracefs/inode.c
+++ b/fs/tracefs/inode.c
@@ -270,8 +270,6 @@ static int trace_fill_super(struct super_block *sb, void *data, int silent)
struct tracefs_fs_info *fsi;
int err;
- save_mount_options(sb, data);
-
fsi = kzalloc(sizeof(struct tracefs_fs_info), GFP_KERNEL);
sb->s_fs_info = fsi;
if (!fsi) {