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| author | Al Viro <viro@zeniv.linux.org.uk> | 2015-11-17 10:20:54 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2015-12-08 22:41:54 -0500 |
| commit | 6b2553918d8b4e6de9853fd6315bec7271a2e592 (patch) | |
| tree | 85540dcb0dc0de3d67c68d0aa7b17058f4e96539 /fs/proc/inode.c | |
| parent | 21fc61c73c3903c4c312d0802da01ec2b323d174 (diff) | |
| download | linux-6b2553918d8b4e6de9853fd6315bec7271a2e592.tar.bz2 | |
replace ->follow_link() with new method that could stay in RCU mode
new method: ->get_link(); replacement of ->follow_link(). The differences
are:
* inode and dentry are passed separately
* might be called both in RCU and non-RCU mode;
the former is indicated by passing it a NULL dentry.
* when called that way it isn't allowed to block
and should return ERR_PTR(-ECHILD) if it needs to be called
in non-RCU mode.
It's a flagday change - the old method is gone, all in-tree instances
converted. Conversion isn't hard; said that, so far very few instances
do not immediately bail out when called in RCU mode. That'll change
in the next commits.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/proc/inode.c')
| -rw-r--r-- | fs/proc/inode.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/fs/proc/inode.c b/fs/proc/inode.c index bd95b9fdebb0..10360b268794 100644 --- a/fs/proc/inode.c +++ b/fs/proc/inode.c @@ -393,9 +393,10 @@ static const struct file_operations proc_reg_file_ops_no_compat = { }; #endif -static const char *proc_follow_link(struct dentry *dentry, void **cookie) +static const char *proc_get_link(struct dentry *dentry, + struct inode *inode, void **cookie) { - struct proc_dir_entry *pde = PDE(d_inode(dentry)); + struct proc_dir_entry *pde = PDE(inode); if (unlikely(!use_pde(pde))) return ERR_PTR(-EINVAL); *cookie = pde; @@ -409,7 +410,7 @@ static void proc_put_link(struct inode *unused, void *p) const struct inode_operations proc_link_inode_operations = { .readlink = generic_readlink, - .follow_link = proc_follow_link, + .get_link = proc_get_link, .put_link = proc_put_link, }; |