linux-toradex.git/fs/gfs2/dentry.c, branch v4.2.1

VFS: normal filesystems (and lustre): d_inode() annotations

2015-04-15T19:06:57+00:00

that's the bulk of filesystem drivers dealing with inodes of their own

Signed-off-by: David Howells 
Signed-off-by: Al Viro

vfs: Remove unnecessary calls of check_submounts_and_drop

2014-10-09T06:38:56+00:00

Now that check_submounts_and_drop can not fail and is called from
d_invalidate there is no longer a need to call check_submounts_and_drom
from filesystem d_revalidate methods so remove it.

Reviewed-by: Miklos Szeredi 
Signed-off-by: "Eric W. Biederman" 
Signed-off-by: Al Viro

gfs2: use check_submounts_and_drop()

2013-09-05T20:23:51+00:00

Do have_submounts(), shrink_dcache_parent() and d_drop() atomically.

check_submounts_and_drop() can deal with negative dentries and
non-directories as well.

Non-directories can also be mounted on.  And just like directories we don't
want these to disappear with invalidation.

Signed-off-by: Miklos Szeredi 
CC: Steven Whitehouse 
Signed-off-by: Al Viro

Don't pass inode to ->d_hash() and ->d_compare()

2013-06-29T08:57:36+00:00

Instances either don't look at it at all (the majority of cases) or
only want it to find the superblock (which can be had as dentry->d_sb).
A few cases that want more are actually safe with dentry->d_inode -
the only precaution needed is the check that it hadn't been replaced with
NULL by rmdir() or by overwriting rename(), which case should be simply
treated as cache miss.

Signed-off-by: Linus Torvalds 
Signed-off-by: Al Viro

stop passing nameidata * to ->d_revalidate()

2012-07-14T12:34:14+00:00

Just the lookup flags.  Die, bastard, die...

Signed-off-by: Al Viro

gfs2: fix d_revalidate oopsen on NFS exports

2011-03-10T08:44:48+00:00

can't blindly check nd->flags in ->d_revalidate()

Signed-off-by: Al Viro

fs: rcu-walk aware d_revalidate method

2011-01-07T06:50:29+00:00

Require filesystems be aware of .d_revalidate being called in rcu-walk
mode (nd->flags & LOOKUP_RCU). For now do a simple push down, returning
-ECHILD from all implementations.

Signed-off-by: Nick Piggin

fs: change d_hash for rcu-walk

2011-01-07T06:50:20+00:00

Change d_hash so it may be called from lock-free RCU lookups. See similar
patch for d_compare for details.

For in-tree filesystems, this is just a mechanical change.

Signed-off-by: Nick Piggin

fs: change d_delete semantics

2011-01-07T06:50:18+00:00

Change d_delete from a dentry deletion notification to a dentry caching
advise, more like ->drop_inode. Require it to be constant and idempotent,
and not take d_lock. This is how all existing filesystems use the callback
anyway.

This makes fine grained dentry locking of dput and dentry lru scanning
much simpler.

Signed-off-by: Nick Piggin

GFS2: Remove localcaching mount option

2010-09-23T13:00:31+00:00

This option defaulted to on for lock_nolock mounts and off
otherwise. The only function was to avoid the revalidation of
dentries. In the cluster case, that is entirely pointless and
liable to cause coherency problems.

The patch changes the revalidation to depend upon whether the
fs is a local or cluster fs (i.e. it follows the existing default
behaviour). I very much doubt anybody ever used this option as
there is no reason to. Even so we will continue to accept it
on the mount command line, but ignore it.

Signed-off-by: Steven Whitehouse