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-rw-r--r--Documentation/filesystems/Locking7
-rw-r--r--Documentation/filesystems/porting7
-rw-r--r--Documentation/filesystems/vfs.txt4
3 files changed, 10 insertions, 8 deletions
diff --git a/Documentation/filesystems/Locking b/Documentation/filesystems/Locking
index 1045da582b9b..3abf08f1b14a 100644
--- a/Documentation/filesystems/Locking
+++ b/Documentation/filesystems/Locking
@@ -142,15 +142,16 @@ see also dquot_operations section.
142 142
143--------------------------- file_system_type --------------------------- 143--------------------------- file_system_type ---------------------------
144prototypes: 144prototypes:
145 struct super_block *(*get_sb) (struct file_system_type *, int, 145 struct int (*get_sb) (struct file_system_type *, int,
146 const char *, void *); 146 const char *, void *, struct vfsmount *);
147 void (*kill_sb) (struct super_block *); 147 void (*kill_sb) (struct super_block *);
148locking rules: 148locking rules:
149 may block BKL 149 may block BKL
150get_sb yes yes 150get_sb yes yes
151kill_sb yes yes 151kill_sb yes yes
152 152
153->get_sb() returns error or a locked superblock (exclusive on ->s_umount). 153->get_sb() returns error or 0 with locked superblock attached to the vfsmount
154(exclusive on ->s_umount).
154->kill_sb() takes a write-locked superblock, does all shutdown work on it, 155->kill_sb() takes a write-locked superblock, does all shutdown work on it,
155unlocks and drops the reference. 156unlocks and drops the reference.
156 157
diff --git a/Documentation/filesystems/porting b/Documentation/filesystems/porting
index 2f388460cbe7..5531694059ab 100644
--- a/Documentation/filesystems/porting
+++ b/Documentation/filesystems/porting
@@ -50,10 +50,11 @@ Turn your foo_read_super() into a function that would return 0 in case of
50success and negative number in case of error (-EINVAL unless you have more 50success and negative number in case of error (-EINVAL unless you have more
51informative error value to report). Call it foo_fill_super(). Now declare 51informative error value to report). Call it foo_fill_super(). Now declare
52 52
53struct super_block foo_get_sb(struct file_system_type *fs_type, 53int foo_get_sb(struct file_system_type *fs_type,
54 int flags, const char *dev_name, void *data) 54 int flags, const char *dev_name, void *data, struct vfsmount *mnt)
55{ 55{
56 return get_sb_bdev(fs_type, flags, dev_name, data, ext2_fill_super); 56 return get_sb_bdev(fs_type, flags, dev_name, data, foo_fill_super,
57 mnt);
57} 58}
58 59
59(or similar with s/bdev/nodev/ or s/bdev/single/, depending on the kind of 60(or similar with s/bdev/nodev/ or s/bdev/single/, depending on the kind of
diff --git a/Documentation/filesystems/vfs.txt b/Documentation/filesystems/vfs.txt
index 3a2e5520c1e3..dd7d0dcedc87 100644
--- a/Documentation/filesystems/vfs.txt
+++ b/Documentation/filesystems/vfs.txt
@@ -113,8 +113,8 @@ members are defined:
113struct file_system_type { 113struct file_system_type {
114 const char *name; 114 const char *name;
115 int fs_flags; 115 int fs_flags;
116 struct super_block *(*get_sb) (struct file_system_type *, int, 116 struct int (*get_sb) (struct file_system_type *, int,
117 const char *, void *); 117 const char *, void *, struct vfsmount *);
118 void (*kill_sb) (struct super_block *); 118 void (*kill_sb) (struct super_block *);
119 struct module *owner; 119 struct module *owner;
120 struct file_system_type * next; 120 struct file_system_type * next;