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->permission() sanitizing: document API changes

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2011-06-20 21:56:31 -04:00
parent d2d9e9fbc2
commit 76fe3276be
1 changed files with 7 additions and 3 deletions
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10
Documentation/filesystems/porting
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@ -398,12 +398,16 @@ Currently you can only have FALLOC_FL_PUNCH_HOLE with FALLOC_FL_KEEP_SIZE set,
so the i_size should not change when hole punching, even when puching the end of
a file off.
--
[mandatory]
--
[mandatory]
->get_sb() is gone. Switch to use of ->mount(). Typically it's just
a matter of switching from calling get_sb_... to mount_... and changing the
function type. If you were doing it manually, just switch from setting ->mnt_root
to some pointer to returning that pointer. On errors return ERR_PTR(...).
--
[mandatory]
->permission(), generic_permission() and ->check_acl() have lost flags
argument; instead of passing IPERM_FLAG_RCU we add MAY_NOT_BLOCK into mask.
generic_permission() has also lost the check_acl argument; if you want
non-NULL to be used for that inode, put it into ->i_op->check_acl.