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e86e6638d1
Unencrypted and encrypted-dentries where the key is available don't need to be revalidated by fscrypt, since they don't go stale from under VFS and the key cannot be removed for the encrypted case without evicting the dentry. Disable their d_revalidate hook on the first lookup, to avoid repeated revalidation later. This is done in preparation to always configuring d_op through sb->s_d_op. The only part detail is that, since the filesystem might have other features that require revalidation, we only apply this optimization if the d_revalidate handler is fscrypt_d_revalidate itself. Finally, we need to clean the dentry->flags even for unencrypted dentries, so the ->d_lock might be acquired even for them. In order to avoid doing it for filesystems that don't care about fscrypt at all, we peek ->d_flags without the lock at first, and only acquire it if we actually need to write the flag. Reviewed-by: Eric Biggers <ebiggers@google.com> Link: https://lore.kernel.org/r/20240221171412.10710-4-krisman@suse.de Signed-off-by: Gabriel Krisman Bertazi <krisman@suse.de> |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.