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| author | Al Viro <viro@zeniv.linux.org.uk> | 2015-11-17 16:20:54 +0100 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2015-12-09 04:41:54 +0100 |
| commit | 6b2553918d8b4e6de9853fd6315bec7271a2e592 (patch) | |
| tree | 85540dcb0dc0de3d67c68d0aa7b17058f4e96539 /include | |
| parent | don't put symlink bodies in pagecache into highmem (diff) | |
| download | linux-6b2553918d8b4e6de9853fd6315bec7271a2e592.tar.xz linux-6b2553918d8b4e6de9853fd6315bec7271a2e592.zip | |
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 'include')
| -rw-r--r-- | include/linux/fs.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h index dfeda44b9ba4..d2fdf09a4407 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1633,7 +1633,7 @@ struct file_operations { struct inode_operations { struct dentry * (*lookup) (struct inode *,struct dentry *, unsigned int); - const char * (*follow_link) (struct dentry *, void **); + const char * (*get_link) (struct dentry *, struct inode *, void **); int (*permission) (struct inode *, int); struct posix_acl * (*get_acl)(struct inode *, int); @@ -2736,7 +2736,7 @@ extern const struct file_operations generic_ro_fops; extern int readlink_copy(char __user *, int, const char *); extern int page_readlink(struct dentry *, char __user *, int); -extern const char *page_follow_link_light(struct dentry *, void **); +extern const char *page_get_link(struct dentry *, struct inode *, void **); extern void page_put_link(struct inode *, void *); extern int __page_symlink(struct inode *inode, const char *symname, int len, int nofs); @@ -2754,7 +2754,7 @@ void __inode_sub_bytes(struct inode *inode, loff_t bytes); void inode_sub_bytes(struct inode *inode, loff_t bytes); loff_t inode_get_bytes(struct inode *inode); void inode_set_bytes(struct inode *inode, loff_t bytes); -const char *simple_follow_link(struct dentry *, void **); +const char *simple_get_link(struct dentry *, struct inode *, void **); extern const struct inode_operations simple_symlink_inode_operations; extern int iterate_dir(struct file *, struct dir_context *); |