fs: turn iprune_mutex into rwsem

[firefly-linux-kernel-4.4.55.git] / fs / ufs / super.c

diff --git a/fs/ufs/super.c b/fs/ufs/super.c
index c97210ee0670cf304f550b9ca84b236748c6ca25..5faed7954d0a15165b9223fcc3c30fc3c5946846 100644 (file)
--- a/fs/ufs/super.c
+++ b/fs/ufs/super.c
@@ -263,6 +263,7 @@ void ufs_panic (struct super_block * sb, const char * function,
        struct ufs_super_block_first * usb1;
        va_list args;
        
+       lock_kernel();
        uspi = UFS_SB(sb)->s_uspi;
        usb1 = ubh_get_usb_first(uspi);
        
@@ -1124,7 +1125,7 @@ failed_nomem:
        return -ENOMEM;
 }
 
-static void ufs_write_super(struct super_block *sb)
+static int ufs_sync_fs(struct super_block *sb, int wait)
 {
        struct ufs_sb_private_info * uspi;
        struct ufs_super_block_first * usb1;
@@ -1133,25 +1134,36 @@ static void ufs_write_super(struct super_block *sb)
 
        lock_super(sb);
        lock_kernel();
+
        UFSD("ENTER\n");
+
        flags = UFS_SB(sb)->s_flags;
        uspi = UFS_SB(sb)->s_uspi;
        usb1 = ubh_get_usb_first(uspi);
        usb3 = ubh_get_usb_third(uspi);
 
-       if (!(sb->s_flags & MS_RDONLY)) {
-               usb1->fs_time = cpu_to_fs32(sb, get_seconds());
-               if ((flags & UFS_ST_MASK) == UFS_ST_SUN 
-                 || (flags & UFS_ST_MASK) == UFS_ST_SUNOS
-                 || (flags & UFS_ST_MASK) == UFS_ST_SUNx86)
-                       ufs_set_fs_state(sb, usb1, usb3,
-                                       UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time));
-               ufs_put_cstotal(sb);
-       }
+       usb1->fs_time = cpu_to_fs32(sb, get_seconds());
+       if ((flags & UFS_ST_MASK) == UFS_ST_SUN  ||
+           (flags & UFS_ST_MASK) == UFS_ST_SUNOS ||
+           (flags & UFS_ST_MASK) == UFS_ST_SUNx86)
+               ufs_set_fs_state(sb, usb1, usb3,
+                               UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time));
+       ufs_put_cstotal(sb);
        sb->s_dirt = 0;
+
        UFSD("EXIT\n");
        unlock_kernel();
        unlock_super(sb);
+
+       return 0;
+}
+
+static void ufs_write_super(struct super_block *sb)
+{
+       if (!(sb->s_flags & MS_RDONLY))
+               ufs_sync_fs(sb, 1);
+       else
+               sb->s_dirt = 0;
 }
 
 static void ufs_put_super(struct super_block *sb)
@@ -1182,7 +1194,8 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
        struct ufs_super_block_third * usb3;
        unsigned new_mount_opt, ufstype;
        unsigned flags;
-       
+
+       lock_kernel();
        lock_super(sb);
        uspi = UFS_SB(sb)->s_uspi;
        flags = UFS_SB(sb)->s_flags;
@@ -1198,6 +1211,7 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
        ufs_set_opt (new_mount_opt, ONERROR_LOCK);
        if (!ufs_parse_options (data, &new_mount_opt)) {
                unlock_super(sb);
+               unlock_kernel();
                return -EINVAL;
        }
        if (!(new_mount_opt & UFS_MOUNT_UFSTYPE)) {
@@ -1205,12 +1219,14 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
        } else if ((new_mount_opt & UFS_MOUNT_UFSTYPE) != ufstype) {
                printk("ufstype can't be changed during remount\n");
                unlock_super(sb);
+               unlock_kernel();
                return -EINVAL;
        }
 
        if ((*mount_flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) {
                UFS_SB(sb)->s_mount_opt = new_mount_opt;
                unlock_super(sb);
+               unlock_kernel();
                return 0;
        }
        
@@ -1236,6 +1252,7 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
                printk("ufs was compiled with read-only support, "
                "can't be mounted as read-write\n");
                unlock_super(sb);
+               unlock_kernel();
                return -EINVAL;
 #else
                if (ufstype != UFS_MOUNT_UFSTYPE_SUN && 
@@ -1245,11 +1262,13 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
                    ufstype != UFS_MOUNT_UFSTYPE_UFS2) {
                        printk("this ufstype is read-only supported\n");
                        unlock_super(sb);
+                       unlock_kernel();
                        return -EINVAL;
                }
                if (!ufs_read_cylinder_structures(sb)) {
                        printk("failed during remounting\n");
                        unlock_super(sb);
+                       unlock_kernel();
                        return -EPERM;
                }
                sb->s_flags &= ~MS_RDONLY;
@@ -1257,6 +1276,7 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
        }
        UFS_SB(sb)->s_mount_opt = new_mount_opt;
        unlock_super(sb);
+       unlock_kernel();
        return 0;
 }
 
@@ -1372,6 +1392,7 @@ static const struct super_operations ufs_super_ops = {
        .delete_inode   = ufs_delete_inode,
        .put_super      = ufs_put_super,
        .write_super    = ufs_write_super,
+       .sync_fs        = ufs_sync_fs,
        .statfs         = ufs_statfs,
        .remount_fs     = ufs_remount,
        .show_options   = ufs_show_options,