BKL: Explicitly add BKL around get_sb/fill_super
This patch is a preparation necessary to remove the BKL from do_new_mount().
It explicitly adds calls to lock_kernel()/unlock_kernel() around
get_sb/fill_super operations for filesystems that still uses the BKL.
I've read through all the code formerly covered by the BKL inside
do_kern_mount() and have satisfied myself that it doesn't need the BKL
any more.
do_kern_mount() is already called without the BKL when mounting the rootfs
and in nfsctl. do_kern_mount() calls vfs_kern_mount(), which is called
from various places without BKL: simple_pin_fs(), nfs_do_clone_mount()
through nfs_follow_mountpoint(), afs_mntpt_do_automount() through
afs_mntpt_follow_link(). Both later functions are actually the filesystems
follow_link inode operation. vfs_kern_mount() is calling the specified
get_sb function and lets the filesystem do its job by calling the given
fill_super function.
Therefore I think it is safe to push down the BKL from the VFS to the
low-level filesystems get_sb/fill_super operation.
[arnd: do not add the BKL to those file systems that already
don't use it elsewhere]
Signed-off-by: Jan Blunck <jblunck@infradead.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Matthew Wilcox <matthew@wil.cx>
Cc: Christoph Hellwig <hch@infradead.org>
diff --git a/fs/adfs/super.c b/fs/adfs/super.c
index 4a3af70..d9803f7 100644
--- a/fs/adfs/super.c
+++ b/fs/adfs/super.c
@@ -352,11 +352,15 @@
struct adfs_sb_info *asb;
struct inode *root;
+ lock_kernel();
+
sb->s_flags |= MS_NODIRATIME;
asb = kzalloc(sizeof(*asb), GFP_KERNEL);
- if (!asb)
+ if (!asb) {
+ unlock_kernel();
return -ENOMEM;
+ }
sb->s_fs_info = asb;
/* set default options */
@@ -474,6 +478,7 @@
goto error;
} else
sb->s_root->d_op = &adfs_dentry_operations;
+ unlock_kernel();
return 0;
error_free_bh:
@@ -481,6 +486,7 @@
error:
sb->s_fs_info = NULL;
kfree(asb);
+ unlock_kernel();
return -EINVAL;
}
diff --git a/fs/affs/super.c b/fs/affs/super.c
index 33c4e7e..3a6d1de 100644
--- a/fs/affs/super.c
+++ b/fs/affs/super.c
@@ -291,6 +291,8 @@
u8 sig[4];
int ret = -EINVAL;
+ lock_kernel();
+
save_mount_options(sb, data);
pr_debug("AFFS: read_super(%s)\n",data ? (const char *)data : "no options");
@@ -300,8 +302,10 @@
sb->s_flags |= MS_NODIRATIME;
sbi = kzalloc(sizeof(struct affs_sb_info), GFP_KERNEL);
- if (!sbi)
+ if (!sbi) {
+ unlock_kernel();
return -ENOMEM;
+ }
sb->s_fs_info = sbi;
mutex_init(&sbi->s_bmlock);
spin_lock_init(&sbi->symlink_lock);
@@ -312,6 +316,7 @@
printk(KERN_ERR "AFFS: Error parsing options\n");
kfree(sbi->s_prefix);
kfree(sbi);
+ unlock_kernel();
return -EINVAL;
}
/* N.B. after this point s_prefix must be released */
@@ -482,6 +487,7 @@
sb->s_root->d_op = &affs_dentry_operations;
pr_debug("AFFS: s_flags=%lX\n",sb->s_flags);
+ unlock_kernel();
return 0;
/*
@@ -496,6 +502,7 @@
kfree(sbi->s_prefix);
kfree(sbi);
sb->s_fs_info = NULL;
+ unlock_kernel();
return ret;
}
diff --git a/fs/afs/super.c b/fs/afs/super.c
index 77e1e5a..6c2fef4 100644
--- a/fs/afs/super.c
+++ b/fs/afs/super.c
@@ -302,12 +302,15 @@
struct inode *inode = NULL;
int ret;
+ lock_kernel();
+
_enter("");
/* allocate a superblock info record */
as = kzalloc(sizeof(struct afs_super_info), GFP_KERNEL);
if (!as) {
_leave(" = -ENOMEM");
+ unlock_kernel();
return -ENOMEM;
}
@@ -341,6 +344,7 @@
sb->s_root = root;
_leave(" = 0");
+ unlock_kernel();
return 0;
error_inode:
@@ -354,6 +358,7 @@
sb->s_fs_info = NULL;
_leave(" = %d", ret);
+ unlock_kernel();
return ret;
}
diff --git a/fs/bfs/inode.c b/fs/bfs/inode.c
index c4daf0f..d2e0936 100644
--- a/fs/bfs/inode.c
+++ b/fs/bfs/inode.c
@@ -322,9 +322,13 @@
int ret = -EINVAL;
unsigned long i_sblock, i_eblock, i_eoff, s_size;
+ lock_kernel();
+
info = kzalloc(sizeof(*info), GFP_KERNEL);
- if (!info)
+ if (!info) {
+ unlock_kernel();
return -ENOMEM;
+ }
mutex_init(&info->bfs_lock);
s->s_fs_info = info;
@@ -439,6 +443,7 @@
brelse(bh);
brelse(sbh);
dump_imap("read_super", s);
+ unlock_kernel();
return 0;
out3:
@@ -452,6 +457,7 @@
mutex_destroy(&info->bfs_lock);
kfree(info);
s->s_fs_info = NULL;
+ unlock_kernel();
return ret;
}
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index b7431af..070bf1a 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -514,22 +514,30 @@
int flags, const char *dev_name, void *data, struct vfsmount *mnt)
{
int rc;
- struct super_block *sb = sget(fs_type, NULL, set_anon_super, NULL);
+ struct super_block *sb;
+
+ lock_kernel();
+
+ sb = sget(fs_type, NULL, set_anon_super, NULL);
cFYI(1, "Devname: %s flags: %d ", dev_name, flags);
- if (IS_ERR(sb))
+ if (IS_ERR(sb)) {
+ unlock_kernel();
return PTR_ERR(sb);
+ }
sb->s_flags = flags;
rc = cifs_read_super(sb, data, dev_name, flags & MS_SILENT ? 1 : 0);
if (rc) {
deactivate_locked_super(sb);
+ unlock_kernel();
return rc;
}
sb->s_flags |= MS_ACTIVE;
simple_set_mnt(mnt, sb);
+ unlock_kernel();
return 0;
}
diff --git a/fs/coda/inode.c b/fs/coda/inode.c
index 6526e6f..bfe8179 100644
--- a/fs/coda/inode.c
+++ b/fs/coda/inode.c
@@ -148,6 +148,8 @@
int error;
int idx;
+ lock_kernel();
+
idx = get_device_index((struct coda_mount_data *) data);
/* Ignore errors in data, for backward compatibility */
@@ -159,11 +161,13 @@
vc = &coda_comms[idx];
if (!vc->vc_inuse) {
printk("coda_read_super: No pseudo device\n");
+ unlock_kernel();
return -EINVAL;
}
if ( vc->vc_sb ) {
printk("coda_read_super: Device already mounted\n");
+ unlock_kernel();
return -EBUSY;
}
@@ -202,7 +206,8 @@
sb->s_root = d_alloc_root(root);
if (!sb->s_root)
goto error;
- return 0;
+ unlock_kernel();
+ return 0;
error:
bdi_destroy(&vc->bdi);
@@ -212,6 +217,7 @@
if (vc)
vc->vc_sb = NULL;
+ unlock_kernel();
return -EINVAL;
}
diff --git a/fs/ecryptfs/main.c b/fs/ecryptfs/main.c
index cbd4e18..c4af92f 100644
--- a/fs/ecryptfs/main.c
+++ b/fs/ecryptfs/main.c
@@ -36,6 +36,7 @@
#include <linux/parser.h>
#include <linux/fs_stack.h>
#include <linux/slab.h>
+#include <linux/smp_lock.h> /* For lock_kernel() */
#include "ecryptfs_kernel.h"
/**
@@ -550,6 +551,7 @@
const char *err = "Getting sb failed";
int rc;
+ lock_kernel();
sbi = kmem_cache_zalloc(ecryptfs_sb_info_cache, GFP_KERNEL);
if (!sbi) {
rc = -ENOMEM;
@@ -608,6 +610,7 @@
goto out;
}
simple_set_mnt(mnt, s);
+ unlock_kernel();
return 0;
out:
@@ -616,6 +619,7 @@
kmem_cache_free(ecryptfs_sb_info_cache, sbi);
}
printk(KERN_ERR "%s; rc = [%d]\n", err, rc);
+ unlock_kernel();
return rc;
}
diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index 1ec6026..f98c390 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -747,15 +747,18 @@
__le32 features;
int err;
+ lock_kernel();
+
+ err = -ENOMEM;
sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);
if (!sbi)
- return -ENOMEM;
+ goto failed_unlock;
sbi->s_blockgroup_lock =
kzalloc(sizeof(struct blockgroup_lock), GFP_KERNEL);
if (!sbi->s_blockgroup_lock) {
kfree(sbi);
- return -ENOMEM;
+ goto failed_unlock;
}
sb->s_fs_info = sbi;
sbi->s_sb_block = sb_block;
@@ -1083,6 +1086,7 @@
if (ext2_setup_super (sb, es, sb->s_flags & MS_RDONLY))
sb->s_flags |= MS_RDONLY;
ext2_write_super(sb);
+ unlock_kernel();
return 0;
cantfind_ext2:
@@ -1107,6 +1111,8 @@
sb->s_fs_info = NULL;
kfree(sbi->s_blockgroup_lock);
kfree(sbi);
+failed_unlock:
+ unlock_kernel();
return ret;
}
diff --git a/fs/ext3/super.c b/fs/ext3/super.c
index 5dbf4db..41f9dcd 100644
--- a/fs/ext3/super.c
+++ b/fs/ext3/super.c
@@ -1611,14 +1611,19 @@
__le32 features;
int err;
+ lock_kernel();
+
sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);
- if (!sbi)
+ if (!sbi) {
+ unlock_kernel();
return -ENOMEM;
+ }
sbi->s_blockgroup_lock =
kzalloc(sizeof(struct blockgroup_lock), GFP_KERNEL);
if (!sbi->s_blockgroup_lock) {
kfree(sbi);
+ unlock_kernel();
return -ENOMEM;
}
sb->s_fs_info = sbi;
@@ -2026,6 +2031,7 @@
"writeback");
lock_kernel();
+ unlock_kernel();
return 0;
cantfind_ext3:
@@ -2056,6 +2062,7 @@
kfree(sbi->s_blockgroup_lock);
kfree(sbi);
lock_kernel();
+ unlock_kernel();
return ret;
}
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 2614774..0f0021f 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -2568,6 +2568,8 @@
int err;
unsigned int journal_ioprio = DEFAULT_JOURNAL_IOPRIO;
+ lock_kernel();
+
sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);
if (!sbi)
goto out_free_orig;
@@ -3166,7 +3168,6 @@
if (es->s_error_count)
mod_timer(&sbi->s_err_report, jiffies + 300*HZ); /* 5 minutes */
- lock_kernel();
kfree(orig_data);
return 0;
@@ -3213,8 +3214,11 @@
sb->s_fs_info = NULL;
kfree(sbi->s_blockgroup_lock);
kfree(sbi);
- lock_kernel();
+ kfree(orig_data);
+ return ret;
+
out_free_orig:
+ unlock_kernel();
kfree(orig_data);
return ret;
}
diff --git a/fs/fat/namei_msdos.c b/fs/fat/namei_msdos.c
index bbc94ae..e2b0b97 100644
--- a/fs/fat/namei_msdos.c
+++ b/fs/fat/namei_msdos.c
@@ -9,6 +9,7 @@
#include <linux/module.h>
#include <linux/time.h>
#include <linux/buffer_head.h>
+#include <linux/smp_lock.h> /* For lock_kernel() */
#include "fat.h"
/* Characters that are undesirable in an MS-DOS file name */
@@ -662,12 +663,16 @@
{
int res;
+ lock_kernel();
res = fat_fill_super(sb, data, silent, &msdos_dir_inode_operations, 0);
- if (res)
+ if (res) {
+ unlock_kernel();
return res;
+ }
sb->s_flags |= MS_NOATIME;
sb->s_root->d_op = &msdos_dentry_operations;
+ unlock_kernel();
return 0;
}
diff --git a/fs/fat/namei_vfat.c b/fs/fat/namei_vfat.c
index 6fcc7e7..9006ad9 100644
--- a/fs/fat/namei_vfat.c
+++ b/fs/fat/namei_vfat.c
@@ -21,6 +21,7 @@
#include <linux/slab.h>
#include <linux/buffer_head.h>
#include <linux/namei.h>
+#include <linux/smp_lock.h> /* For lock_kernel() */
#include "fat.h"
/*
@@ -1055,15 +1056,19 @@
{
int res;
+ lock_kernel();
res = fat_fill_super(sb, data, silent, &vfat_dir_inode_operations, 1);
- if (res)
+ if (res) {
+ unlock_kernel();
return res;
+ }
if (MSDOS_SB(sb)->options.name_check != 's')
sb->s_root->d_op = &vfat_ci_dentry_ops;
else
sb->s_root->d_op = &vfat_dentry_ops;
+ unlock_kernel();
return 0;
}
diff --git a/fs/freevxfs/vxfs_super.c b/fs/freevxfs/vxfs_super.c
index dc0c041..eb2b9e0 100644
--- a/fs/freevxfs/vxfs_super.c
+++ b/fs/freevxfs/vxfs_super.c
@@ -148,7 +148,7 @@
* The superblock on success, else %NULL.
*
* Locking:
- * We are under the bkl and @sbp->s_lock.
+ * We are under @sbp->s_lock.
*/
static int vxfs_fill_super(struct super_block *sbp, void *dp, int silent)
{
@@ -159,11 +159,14 @@
struct inode *root;
int ret = -EINVAL;
+ lock_kernel();
+
sbp->s_flags |= MS_RDONLY;
infp = kzalloc(sizeof(*infp), GFP_KERNEL);
if (!infp) {
printk(KERN_WARNING "vxfs: unable to allocate incore superblock\n");
+ unlock_kernel();
return -ENOMEM;
}
@@ -236,6 +239,7 @@
goto out_free_ilist;
}
+ unlock_kernel();
return 0;
out_free_ilist:
@@ -245,6 +249,7 @@
out:
brelse(bp);
kfree(infp);
+ unlock_kernel();
return ret;
}
diff --git a/fs/hfs/super.c b/fs/hfs/super.c
index 34235d4..3069416 100644
--- a/fs/hfs/super.c
+++ b/fs/hfs/super.c
@@ -382,9 +382,13 @@
struct inode *root_inode;
int res;
+ lock_kernel();
+
sbi = kzalloc(sizeof(struct hfs_sb_info), GFP_KERNEL);
- if (!sbi)
+ if (!sbi) {
+ unlock_kernel();
return -ENOMEM;
+ }
sb->s_fs_info = sbi;
INIT_HLIST_HEAD(&sbi->rsrc_inodes);
@@ -435,6 +439,7 @@
sb->s_root->d_op = &hfs_dentry_operations;
/* everything's okay */
+ unlock_kernel();
return 0;
bail_iput:
@@ -443,6 +448,7 @@
printk(KERN_ERR "hfs: get root inode failed.\n");
bail:
hfs_mdb_put(sb);
+ unlock_kernel();
return res;
}
diff --git a/fs/hpfs/super.c b/fs/hpfs/super.c
index 2607010..c969a1a 100644
--- a/fs/hpfs/super.c
+++ b/fs/hpfs/super.c
@@ -477,11 +477,15 @@
int o;
+ lock_kernel();
+
save_mount_options(s, options);
sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);
- if (!sbi)
+ if (!sbi) {
+ unlock_kernel();
return -ENOMEM;
+ }
s->s_fs_info = sbi;
sbi->sb_bmp_dir = NULL;
@@ -666,6 +670,7 @@
root->i_blocks = 5;
hpfs_brelse4(&qbh);
}
+ unlock_kernel();
return 0;
bail4: brelse(bh2);
@@ -677,6 +682,7 @@
kfree(sbi->sb_cp_table);
s->s_fs_info = NULL;
kfree(sbi);
+ unlock_kernel();
return -EINVAL;
}
diff --git a/fs/isofs/inode.c b/fs/isofs/inode.c
index 5a44811..05baf772 100644
--- a/fs/isofs/inode.c
+++ b/fs/isofs/inode.c
@@ -571,11 +571,15 @@
int table, error = -EINVAL;
unsigned int vol_desc_start;
+ lock_kernel();
+
save_mount_options(s, data);
sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);
- if (!sbi)
+ if (!sbi) {
+ unlock_kernel();
return -ENOMEM;
+ }
s->s_fs_info = sbi;
if (!parse_options((char *)data, &opt))
@@ -900,6 +904,7 @@
kfree(opt.iocharset);
+ unlock_kernel();
return 0;
/*
@@ -939,6 +944,7 @@
kfree(opt.iocharset);
kfree(sbi);
s->s_fs_info = NULL;
+ unlock_kernel();
return error;
}
diff --git a/fs/jffs2/super.c b/fs/jffs2/super.c
index 662bba0..58dd9cf 100644
--- a/fs/jffs2/super.c
+++ b/fs/jffs2/super.c
@@ -146,14 +146,19 @@
static int jffs2_fill_super(struct super_block *sb, void *data, int silent)
{
struct jffs2_sb_info *c;
+ int ret;
+
+ lock_kernel();
D1(printk(KERN_DEBUG "jffs2_get_sb_mtd():"
" New superblock for device %d (\"%s\")\n",
sb->s_mtd->index, sb->s_mtd->name));
c = kzalloc(sizeof(*c), GFP_KERNEL);
- if (!c)
+ if (!c) {
+ unlock_kernel();
return -ENOMEM;
+ }
c->mtd = sb->s_mtd;
c->os_priv = sb;
@@ -175,7 +180,9 @@
#ifdef CONFIG_JFFS2_FS_POSIX_ACL
sb->s_flags |= MS_POSIXACL;
#endif
- return jffs2_do_fill_super(sb, data, silent);
+ ret = jffs2_do_fill_super(sb, data, silent);
+ unlock_kernel();
+ return ret;
}
static int jffs2_get_sb(struct file_system_type *fs_type,
diff --git a/fs/jfs/super.c b/fs/jfs/super.c
index ec8c3e4..eb31f67 100644
--- a/fs/jfs/super.c
+++ b/fs/jfs/super.c
@@ -438,14 +438,20 @@
s64 newLVSize = 0;
int flag, ret = -EINVAL;
+ lock_kernel();
+
jfs_info("In jfs_read_super: s_flags=0x%lx", sb->s_flags);
- if (!new_valid_dev(sb->s_bdev->bd_dev))
+ if (!new_valid_dev(sb->s_bdev->bd_dev)) {
+ unlock_kernel();
return -EOVERFLOW;
+ }
sbi = kzalloc(sizeof (struct jfs_sb_info), GFP_KERNEL);
- if (!sbi)
+ if (!sbi) {
+ unlock_kernel();
return -ENOMEM;
+ }
sb->s_fs_info = sbi;
sbi->sb = sb;
sbi->uid = sbi->gid = sbi->umask = -1;
@@ -542,6 +548,7 @@
sb->s_maxbytes = min(((u64) PAGE_CACHE_SIZE << 32) - 1, (u64)sb->s_maxbytes);
#endif
sb->s_time_gran = 1;
+ unlock_kernel();
return 0;
out_no_root:
@@ -564,6 +571,7 @@
unload_nls(sbi->nls_tab);
out_kfree:
kfree(sbi);
+ unlock_kernel();
return ret;
}
diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c
index 9222633..0d573c2 100644
--- a/fs/nilfs2/super.c
+++ b/fs/nilfs2/super.c
@@ -1113,9 +1113,12 @@
if (!(flags & MS_RDONLY))
mode |= FMODE_WRITE;
+ lock_kernel();
sd.bdev = open_bdev_exclusive(dev_name, mode, fs_type);
- if (IS_ERR(sd.bdev))
+ if (IS_ERR(sd.bdev)) {
+ unlock_kernel();
return PTR_ERR(sd.bdev);
+ }
/*
* To get mount instance using sget() vfs-routine, NILFS needs
@@ -1198,6 +1201,7 @@
if (need_to_close)
close_bdev_exclusive(sd.bdev, mode);
simple_set_mnt(mnt, s);
+ unlock_kernel();
return 0;
failed_unlock:
@@ -1206,6 +1210,7 @@
failed:
close_bdev_exclusive(sd.bdev, mode);
+ unlock_kernel();
return err;
cancel_new:
@@ -1218,6 +1223,7 @@
* We must finish all post-cleaning before this call;
* put_nilfs() needs the block device.
*/
+ unlock_kernel();
return err;
}
diff --git a/fs/ntfs/super.c b/fs/ntfs/super.c
index 5128061..1f31e77 100644
--- a/fs/ntfs/super.c
+++ b/fs/ntfs/super.c
@@ -2732,6 +2732,8 @@
struct inode *tmp_ino;
int blocksize, result;
+ lock_kernel();
+
/*
* We do a pretty difficult piece of bootstrap by reading the
* MFT (and other metadata) from disk into memory. We'll only
@@ -2755,6 +2757,7 @@
ntfs_error(sb, "Allocation of NTFS volume structure "
"failed. Aborting mount...");
lockdep_on();
+ unlock_kernel();
return -ENOMEM;
}
/* Initialize ntfs_volume structure. */
@@ -2942,6 +2945,7 @@
sb->s_export_op = &ntfs_export_ops;
lock_kernel();
lockdep_on();
+ unlock_kernel();
return 0;
}
ntfs_error(sb, "Failed to allocate root directory.");
@@ -3062,6 +3066,7 @@
kfree(vol);
ntfs_debug("Failed, returning -EINVAL.");
lockdep_on();
+ unlock_kernel();
return -EINVAL;
}
diff --git a/fs/ocfs2/dlmfs/dlmfs.c b/fs/ocfs2/dlmfs/dlmfs.c
index c2903b8..667d7ce 100644
--- a/fs/ocfs2/dlmfs/dlmfs.c
+++ b/fs/ocfs2/dlmfs/dlmfs.c
@@ -44,6 +44,7 @@
#include <linux/string.h>
#include <linux/backing-dev.h>
#include <linux/poll.h>
+#include <linux/smp_lock.h>
#include <asm/uaccess.h>
@@ -588,21 +589,27 @@
struct inode * inode;
struct dentry * root;
+ lock_kernel();
+
sb->s_maxbytes = MAX_LFS_FILESIZE;
sb->s_blocksize = PAGE_CACHE_SIZE;
sb->s_blocksize_bits = PAGE_CACHE_SHIFT;
sb->s_magic = DLMFS_MAGIC;
sb->s_op = &dlmfs_ops;
inode = dlmfs_get_root_inode(sb);
- if (!inode)
+ if (!inode) {
+ unlock_kernel();
return -ENOMEM;
+ }
root = d_alloc_root(inode);
if (!root) {
iput(inode);
+ unlock_kernel();
return -ENOMEM;
}
sb->s_root = root;
+ unlock_kernel();
return 0;
}
diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index fa1be1b..b7e4f2d1 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -1002,6 +1002,8 @@
char nodestr[8];
struct ocfs2_blockcheck_stats stats;
+ lock_kernel();
+
mlog_entry("%p, %p, %i", sb, data, silent);
if (!ocfs2_parse_options(sb, data, &parsed_options, 0)) {
@@ -1179,6 +1181,7 @@
atomic_set(&osb->vol_state, VOLUME_DISABLED);
wake_up(&osb->osb_mount_event);
mlog_exit(status);
+ unlock_kernel();
return status;
}
}
@@ -1193,6 +1196,7 @@
ocfs2_orphan_scan_start(osb);
mlog_exit(status);
+ unlock_kernel();
return status;
read_super_error:
@@ -1208,6 +1212,7 @@
}
mlog_exit(status);
+ unlock_kernel();
return status;
}
diff --git a/fs/qnx4/inode.c b/fs/qnx4/inode.c
index 1682972..86a7be1 100644
--- a/fs/qnx4/inode.c
+++ b/fs/qnx4/inode.c
@@ -234,9 +234,13 @@
struct qnx4_sb_info *qs;
int ret = -EINVAL;
+ lock_kernel();
+
qs = kzalloc(sizeof(struct qnx4_sb_info), GFP_KERNEL);
- if (!qs)
+ if (!qs) {
+ unlock_kernel();
return -ENOMEM;
+ }
s->s_fs_info = qs;
sb_set_blocksize(s, QNX4_BLOCK_SIZE);
@@ -284,6 +288,7 @@
brelse(bh);
+ unlock_kernel();
return 0;
outi:
@@ -293,6 +298,7 @@
outnobh:
kfree(qs);
s->s_fs_info = NULL;
+ unlock_kernel();
return ret;
}
diff --git a/fs/smbfs/inode.c b/fs/smbfs/inode.c
index 450c919..8fc5e50 100644
--- a/fs/smbfs/inode.c
+++ b/fs/smbfs/inode.c
@@ -501,6 +501,8 @@
void *mem;
static int warn_count;
+ lock_kernel();
+
if (warn_count < 5) {
warn_count++;
printk(KERN_EMERG "smbfs is deprecated and will be removed"
@@ -621,6 +623,7 @@
smb_new_dentry(sb->s_root);
+ unlock_kernel();
return 0;
out_no_root:
@@ -643,9 +646,11 @@
out_no_data:
printk(KERN_ERR "smb_fill_super: missing data argument\n");
out_fail:
+ unlock_kernel();
return -EINVAL;
out_no_server:
printk(KERN_ERR "smb_fill_super: cannot allocate struct smb_sb_info\n");
+ unlock_kernel();
return -ENOMEM;
}
diff --git a/fs/squashfs/super.c b/fs/squashfs/super.c
index 88b4f86..ab1a401 100644
--- a/fs/squashfs/super.c
+++ b/fs/squashfs/super.c
@@ -87,11 +87,14 @@
u64 lookup_table_start, xattr_id_table_start;
int err;
+ lock_kernel();
+
TRACE("Entered squashfs_fill_superblock\n");
sb->s_fs_info = kzalloc(sizeof(*msblk), GFP_KERNEL);
if (sb->s_fs_info == NULL) {
ERROR("Failed to allocate squashfs_sb_info\n");
+ unlock_kernel();
return -ENOMEM;
}
msblk = sb->s_fs_info;
@@ -301,6 +304,7 @@
TRACE("Leaving squashfs_fill_super\n");
kfree(sblk);
+ unlock_kernel();
return 0;
failed_mount:
@@ -315,11 +319,13 @@
kfree(sb->s_fs_info);
sb->s_fs_info = NULL;
kfree(sblk);
+ unlock_kernel();
return err;
failure:
kfree(sb->s_fs_info);
sb->s_fs_info = NULL;
+ unlock_kernel();
return -ENOMEM;
}
diff --git a/fs/udf/super.c b/fs/udf/super.c
index 65412d8..76f3d6d 100644
--- a/fs/udf/super.c
+++ b/fs/udf/super.c
@@ -1880,6 +1880,8 @@
struct kernel_lb_addr rootdir, fileset;
struct udf_sb_info *sbi;
+ lock_kernel();
+
uopt.flags = (1 << UDF_FLAG_USE_AD_IN_ICB) | (1 << UDF_FLAG_STRICT);
uopt.uid = -1;
uopt.gid = -1;
@@ -1888,8 +1890,10 @@
uopt.dmode = UDF_INVALID_MODE;
sbi = kzalloc(sizeof(struct udf_sb_info), GFP_KERNEL);
- if (!sbi)
+ if (!sbi) {
+ unlock_kernel();
return -ENOMEM;
+ }
sb->s_fs_info = sbi;
@@ -2035,6 +2039,7 @@
goto error_out;
}
sb->s_maxbytes = MAX_LFS_FILESIZE;
+ unlock_kernel();
return 0;
error_out:
@@ -2055,6 +2060,7 @@
kfree(sbi);
sb->s_fs_info = NULL;
+ unlock_kernel();
return -EINVAL;
}
diff --git a/fs/ufs/super.c b/fs/ufs/super.c
index d510c1b..6b9be90 100644
--- a/fs/ufs/super.c
+++ b/fs/ufs/super.c
@@ -696,6 +696,8 @@
unsigned maxsymlen;
int ret = -EINVAL;
+ lock_kernel();
+
uspi = NULL;
ubh = NULL;
flags = 0;
@@ -1163,6 +1165,7 @@
goto failed;
UFSD("EXIT\n");
+ unlock_kernel();
return 0;
dalloc_failed:
@@ -1174,10 +1177,12 @@
kfree(sbi);
sb->s_fs_info = NULL;
UFSD("EXIT (FAILED)\n");
+ unlock_kernel();
return ret;
failed_nomem:
UFSD("EXIT (NOMEM)\n");
+ unlock_kernel();
return -ENOMEM;
}
