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author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-06-22 12:51:21 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-06-22 12:51:21 -0700 |
commit | 052b398a43a7de8c68c13e7fa05d6b3d16ce6801 (patch) | |
tree | 8b7ee72d0617daf55083bc9cbc904ee22cb953db /fs/hostfs/hostfs_kern.c | |
parent | b953c0d234bc72e8489d3bf51a276c5c4ec85345 (diff) | |
parent | b853a16176cf3e02c57e215743015614152c2428 (diff) | |
download | op-kernel-dev-052b398a43a7de8c68c13e7fa05d6b3d16ce6801.zip op-kernel-dev-052b398a43a7de8c68c13e7fa05d6b3d16ce6801.tar.gz |
Merge branch 'for-linus-1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs updates from Al Viro:
"In this pile: pathname resolution rewrite.
- recursion in link_path_walk() is gone.
- nesting limits on symlinks are gone (the only limit remaining is
that the total amount of symlinks is no more than 40, no matter how
nested).
- "fast" (inline) symlinks are handled without leaving rcuwalk mode.
- stack footprint (independent of the nesting) is below kilobyte now,
about on par with what it used to be with one level of nested
symlinks and ~2.8 times lower than it used to be in the worst case.
- struct nameidata is entirely private to fs/namei.c now (not even
opaque pointers are being passed around).
- ->follow_link() and ->put_link() calling conventions had been
changed; all in-tree filesystems converted, out-of-tree should be
able to follow reasonably easily.
For out-of-tree conversions, see Documentation/filesystems/porting
for details (and in-tree filesystems for examples of conversion).
That has sat in -next since mid-May, seems to survive all testing
without regressions and merges clean with v4.1"
* 'for-linus-1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (131 commits)
turn user_{path_at,path,lpath,path_dir}() into static inlines
namei: move saved_nd pointer into struct nameidata
inline user_path_create()
inline user_path_parent()
namei: trim do_last() arguments
namei: stash dfd and name into nameidata
namei: fold path_cleanup() into terminate_walk()
namei: saner calling conventions for filename_parentat()
namei: saner calling conventions for filename_create()
namei: shift nameidata down into filename_parentat()
namei: make filename_lookup() reject ERR_PTR() passed as name
namei: shift nameidata inside filename_lookup()
namei: move putname() call into filename_lookup()
namei: pass the struct path to store the result down into path_lookupat()
namei: uninline set_root{,_rcu}()
namei: be careful with mountpoint crossings in follow_dotdot_rcu()
Documentation: remove outdated information from automount-support.txt
get rid of assorted nameidata-related debris
lustre: kill unused helper
lustre: kill unused macro (LOOKUP_CONTINUE)
...
Diffstat (limited to 'fs/hostfs/hostfs_kern.c')
-rw-r--r-- | fs/hostfs/hostfs_kern.c | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c index 07d8d8f..059597b 100644 --- a/fs/hostfs/hostfs_kern.c +++ b/fs/hostfs/hostfs_kern.c @@ -892,7 +892,7 @@ static const struct inode_operations hostfs_dir_iops = { .setattr = hostfs_setattr, }; -static void *hostfs_follow_link(struct dentry *dentry, struct nameidata *nd) +static const char *hostfs_follow_link(struct dentry *dentry, void **cookie) { char *link = __getname(); if (link) { @@ -906,21 +906,18 @@ static void *hostfs_follow_link(struct dentry *dentry, struct nameidata *nd) } if (err < 0) { __putname(link); - link = ERR_PTR(err); + return ERR_PTR(err); } } else { - link = ERR_PTR(-ENOMEM); + return ERR_PTR(-ENOMEM); } - nd_set_link(nd, link); - return NULL; + return *cookie = link; } -static void hostfs_put_link(struct dentry *dentry, struct nameidata *nd, void *cookie) +static void hostfs_put_link(struct inode *unused, void *cookie) { - char *s = nd_get_link(nd); - if (!IS_ERR(s)) - __putname(s); + __putname(cookie); } static const struct inode_operations hostfs_link_iops = { |