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vfs: bury ->get_sb()

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This is an ex-parrot.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2011-03-16 09:07:58 -04:00
parent 011949811b
commit 1a102ff925
5 changed files with 47 additions and 103 deletions
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6
Documentation/filesystems/Locking
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@@ -166,13 +166,11 @@ prototypes:
void (*kill_sb) (struct super_block *);
locking rules:
may block
get_sb yes
mount yes
kill_sb yes
->get_sb() returns error or 0 with locked superblock attached to the vfsmount
(exclusive on ->s_umount).
->mount() returns ERR_PTR or the root dentry.
->mount() returns ERR_PTR or the root dentry; its superblock should be locked
on return.
->kill_sb() takes a write-locked superblock, does all shutdown work on it,
unlocks and drops the reference.