kernel/linux.git/fs/exportfs, branch v5.10.257

exportfs: use pr_debug for unreachable debug statements

2024-06-21T12:54:05+00:00

[ Upstream commit 427505ffeaa464f683faba945a88d3e3248f6979 ] expfs.c has a bunch of dprintk statements which are unusable due to: #define dprintk(fmt, args...) do{}while(0) Use pr_debug so that they can be enabled dynamically. Also make some minor changes to the debug statements to fix some incorrect types, and remove __func__ which can be handled by dynamic debug separately. Signed-off-by: David Disseldorp Reviewed-by: NeilBrown Signed-off-by: Chuck Lever Signed-off-by: Sasha Levin

exportfs: Add a function to return the raw output from fh_to_dentry()

2024-06-21T12:52:46+00:00

[ Upstream commit d045465fc6cbfa4acfb5a7d817a7c1a57a078109 ] In order to allow nfsd to accept return values that are not acceptable to overlayfs and others, add a new function. Signed-off-by: Trond Myklebust Signed-off-by: Chuck Lever Signed-off-by: Sasha Levin

exportfs_decode_fh(): negative pinned may become positive without the parent locked

2019-11-10T16:56:05+00:00

Signed-off-by: Al Viro

docs: fs: convert docs without extension to ReST

2019-07-31T19:31:05+00:00

There are 3 remaining files without an extension inside the fs docs dir. Manually convert them to ReST. In the case of the nfs/exporting.rst file, as the nfs docs aren't ported yet, I opted to convert and add a :orphan: there, with should be removed when it gets added into a nfs-specific part of the fs documentation. Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Jonathan Corbet

treewide: Add SPDX license identifier - Makefile/Kconfig

2019-05-21T08:50:46+00:00

Add SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any form These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner Signed-off-by: Greg Kroah-Hartman

treewide: Add SPDX license identifier for more missed files

2019-05-21T08:50:45+00:00

Add SPDX license identifiers to all files which: - Have no license information of any form - Have MODULE_LICENCE("GPL*") inside which was used in the initial scan/conversion to ignore the file These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner Signed-off-by: Greg Kroah-Hartman

exportfs: do not read dentry after free

2018-11-23T14:08:17+00:00

The function dentry_connected calls dput(dentry) to drop the previously acquired reference to dentry. In this case, dentry can be released. After that, IS_ROOT(dentry) checks the condition (dentry == dentry->d_parent), which may result in a use-after-free bug. This patch directly compares dentry with its parent obtained before dropping the reference. Fixes: a056cc8934c("exportfs: stop retrying once we race with rename/remove") Signed-off-by: Pan Bian Signed-off-by: Al Viro

exportfs: fix 'passing zero to ERR_PTR()' warning

2018-11-19T04:47:56+00:00

Fix a static code checker warning: fs/exportfs/expfs.c:171 reconnect_one() warn: passing zero to 'ERR_PTR' The error path for lookup_one_len_unlocked failure should set err to PTR_ERR. Fixes: bbf7a8a3562f ("exportfs: move most of reconnect_path to helper function") Signed-off-by: YueHaibing Signed-off-by: Al Viro

ovl: do not try to reconnect a disconnected origin dentry

2018-04-12T10:04:49+00:00

On lookup of non directory, we try to decode the origin file handle stored in upper inode. The origin file handle is supposed to be decoded to a disconnected non-dir dentry, which is fine, because we only need the lower inode of a copy up origin. However, if the origin file handle somehow turns out to be a directory we pay the expensive cost of reconnecting the directory dentry, only to get a mismatch file type and drop the dentry. Optimize this case by explicitly opting out of reconnecting the dentry. Opting-out of reconnect is done by passing a NULL acceptable callback to exportfs_decode_fh(). While the case described above is a strange corner case that does not really need to be optimized, the API added for this optimization will be used by a following patch to optimize a more common case of decoding an overlayfs file handle. Signed-off-by: Amir Goldstein Signed-off-by: Miklos Szeredi

Merge branch 'rebased-statx' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2017-03-03T19:38:56+00:00

Pull vfs 'statx()' update from Al Viro. This adds the new extended stat() interface that internally subsumes our previous stat interfaces, and allows user mode to specify in more detail what kind of information it wants. It also allows for some explicit synchronization information to be passed to the filesystem, which can be relevant for network filesystems: is the cached value ok, or do you need open/close consistency, or what? From David Howells. Andreas Dilger points out that the first version of the extended statx interface was posted June 29, 2010: https://www.spinics.net/lists/linux-fsdevel/msg33831.html * 'rebased-statx' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: statx: Add a system call to make enhanced file info available