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8a3509486f
commit 282dd7d771 upstream.
Currently a user can set mount "-o compress" which will set the
compression algorithm to zlib, and use the default compress level for
zlib (3):
relatime,compress=zlib:3,space_cache
If the user remounts the fs using "-o compress=lzo", then the old
compress_level is used:
relatime,compress=lzo:3,space_cache
But lzo does not expose any tunable compression level. The same happens
if we set any compress argument with different level, also with zstd.
Fix this by resetting the compress_level when compress=lzo is
specified. With the fix applied, lzo is shown without compress level:
relatime,compress=lzo,space_cache
CC: stable@vger.kernel.org # 4.4+
Signed-off-by: Marcos Paulo de Souza <mpdesouza@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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.