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* Merge tag 'idmapped-mounts-v5.12' of ↵Linus Torvalds2021-02-2311-29/+42
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux Pull idmapped mounts from Christian Brauner: "This introduces idmapped mounts which has been in the making for some time. Simply put, different mounts can expose the same file or directory with different ownership. This initial implementation comes with ports for fat, ext4 and with Christoph's port for xfs with more filesystems being actively worked on by independent people and maintainers. Idmapping mounts handle a wide range of long standing use-cases. Here are just a few: - Idmapped mounts make it possible to easily share files between multiple users or multiple machines especially in complex scenarios. For example, idmapped mounts will be used in the implementation of portable home directories in systemd-homed.service(8) where they allow users to move their home directory to an external storage device and use it on multiple computers where they are assigned different uids and gids. This effectively makes it possible to assign random uids and gids at login time. - It is possible to share files from the host with unprivileged containers without having to change ownership permanently through chown(2). - It is possible to idmap a container's rootfs and without having to mangle every file. For example, Chromebooks use it to share the user's Download folder with their unprivileged containers in their Linux subsystem. - It is possible to share files between containers with non-overlapping idmappings. - Filesystem that lack a proper concept of ownership such as fat can use idmapped mounts to implement discretionary access (DAC) permission checking. - They allow users to efficiently changing ownership on a per-mount basis without having to (recursively) chown(2) all files. In contrast to chown (2) changing ownership of large sets of files is instantenous with idmapped mounts. This is especially useful when ownership of a whole root filesystem of a virtual machine or container is changed. With idmapped mounts a single syscall mount_setattr syscall will be sufficient to change the ownership of all files. - Idmapped mounts always take the current ownership into account as idmappings specify what a given uid or gid is supposed to be mapped to. This contrasts with the chown(2) syscall which cannot by itself take the current ownership of the files it changes into account. It simply changes the ownership to the specified uid and gid. This is especially problematic when recursively chown(2)ing a large set of files which is commong with the aforementioned portable home directory and container and vm scenario. - Idmapped mounts allow to change ownership locally, restricting it to specific mounts, and temporarily as the ownership changes only apply as long as the mount exists. Several userspace projects have either already put up patches and pull-requests for this feature or will do so should you decide to pull this: - systemd: In a wide variety of scenarios but especially right away in their implementation of portable home directories. https://systemd.io/HOME_DIRECTORY/ - container runtimes: containerd, runC, LXD:To share data between host and unprivileged containers, unprivileged and privileged containers, etc. The pull request for idmapped mounts support in containerd, the default Kubernetes runtime is already up for quite a while now: https://github.com/containerd/containerd/pull/4734 - The virtio-fs developers and several users have expressed interest in using this feature with virtual machines once virtio-fs is ported. - ChromeOS: Sharing host-directories with unprivileged containers. I've tightly synced with all those projects and all of those listed here have also expressed their need/desire for this feature on the mailing list. For more info on how people use this there's a bunch of talks about this too. Here's just two recent ones: https://www.cncf.io/wp-content/uploads/2020/12/Rootless-Containers-in-Gitpod.pdf https://fosdem.org/2021/schedule/event/containers_idmap/ This comes with an extensive xfstests suite covering both ext4 and xfs: https://git.kernel.org/brauner/xfstests-dev/h/idmapped_mounts It covers truncation, creation, opening, xattrs, vfscaps, setid execution, setgid inheritance and more both with idmapped and non-idmapped mounts. It already helped to discover an unrelated xfs setgid inheritance bug which has since been fixed in mainline. It will be sent for inclusion with the xfstests project should you decide to merge this. In order to support per-mount idmappings vfsmounts are marked with user namespaces. The idmapping of the user namespace will be used to map the ids of vfs objects when they are accessed through that mount. By default all vfsmounts are marked with the initial user namespace. The initial user namespace is used to indicate that a mount is not idmapped. All operations behave as before and this is verified in the testsuite. Based on prior discussions we want to attach the whole user namespace and not just a dedicated idmapping struct. This allows us to reuse all the helpers that already exist for dealing with idmappings instead of introducing a whole new range of helpers. In addition, if we decide in the future that we are confident enough to enable unprivileged users to setup idmapped mounts the permission checking can take into account whether the caller is privileged in the user namespace the mount is currently marked with. The user namespace the mount will be marked with can be specified by passing a file descriptor refering to the user namespace as an argument to the new mount_setattr() syscall together with the new MOUNT_ATTR_IDMAP flag. The system call follows the openat2() pattern of extensibility. The following conditions must be met in order to create an idmapped mount: - The caller must currently have the CAP_SYS_ADMIN capability in the user namespace the underlying filesystem has been mounted in. - The underlying filesystem must support idmapped mounts. - The mount must not already be idmapped. This also implies that the idmapping of a mount cannot be altered once it has been idmapped. - The mount must be a detached/anonymous mount, i.e. it must have been created by calling open_tree() with the OPEN_TREE_CLONE flag and it must not already have been visible in the filesystem. The last two points guarantee easier semantics for userspace and the kernel and make the implementation significantly simpler. By default vfsmounts are marked with the initial user namespace and no behavioral or performance changes are observed. The manpage with a detailed description can be found here: https://git.kernel.org/brauner/man-pages/c/1d7b902e2875a1ff342e036a9f866a995640aea8 In order to support idmapped mounts, filesystems need to be changed and mark themselves with the FS_ALLOW_IDMAP flag in fs_flags. The patches to convert individual filesystem are not very large or complicated overall as can be seen from the included fat, ext4, and xfs ports. Patches for other filesystems are actively worked on and will be sent out separately. The xfstestsuite can be used to verify that port has been done correctly. The mount_setattr() syscall is motivated independent of the idmapped mounts patches and it's been around since July 2019. One of the most valuable features of the new mount api is the ability to perform mounts based on file descriptors only. Together with the lookup restrictions available in the openat2() RESOLVE_* flag namespace which we added in v5.6 this is the first time we are close to hardened and race-free (e.g. symlinks) mounting and path resolution. While userspace has started porting to the new mount api to mount proper filesystems and create new bind-mounts it is currently not possible to change mount options of an already existing bind mount in the new mount api since the mount_setattr() syscall is missing. With the addition of the mount_setattr() syscall we remove this last restriction and userspace can now fully port to the new mount api, covering every use-case the old mount api could. We also add the crucial ability to recursively change mount options for a whole mount tree, both removing and adding mount options at the same time. This syscall has been requested multiple times by various people and projects. There is a simple tool available at https://github.com/brauner/mount-idmapped that allows to create idmapped mounts so people can play with this patch series. I'll add support for the regular mount binary should you decide to pull this in the following weeks: Here's an example to a simple idmapped mount of another user's home directory: u1001@f2-vm:/$ sudo ./mount --idmap both:1000:1001:1 /home/ubuntu/ /mnt u1001@f2-vm:/$ ls -al /home/ubuntu/ total 28 drwxr-xr-x 2 ubuntu ubuntu 4096 Oct 28 22:07 . drwxr-xr-x 4 root root 4096 Oct 28 04:00 .. -rw------- 1 ubuntu ubuntu 3154 Oct 28 22:12 .bash_history -rw-r--r-- 1 ubuntu ubuntu 220 Feb 25 2020 .bash_logout -rw-r--r-- 1 ubuntu ubuntu 3771 Feb 25 2020 .bashrc -rw-r--r-- 1 ubuntu ubuntu 807 Feb 25 2020 .profile -rw-r--r-- 1 ubuntu ubuntu 0 Oct 16 16:11 .sudo_as_admin_successful -rw------- 1 ubuntu ubuntu 1144 Oct 28 00:43 .viminfo u1001@f2-vm:/$ ls -al /mnt/ total 28 drwxr-xr-x 2 u1001 u1001 4096 Oct 28 22:07 . drwxr-xr-x 29 root root 4096 Oct 28 22:01 .. -rw------- 1 u1001 u1001 3154 Oct 28 22:12 .bash_history -rw-r--r-- 1 u1001 u1001 220 Feb 25 2020 .bash_logout -rw-r--r-- 1 u1001 u1001 3771 Feb 25 2020 .bashrc -rw-r--r-- 1 u1001 u1001 807 Feb 25 2020 .profile -rw-r--r-- 1 u1001 u1001 0 Oct 16 16:11 .sudo_as_admin_successful -rw------- 1 u1001 u1001 1144 Oct 28 00:43 .viminfo u1001@f2-vm:/$ touch /mnt/my-file u1001@f2-vm:/$ setfacl -m u:1001:rwx /mnt/my-file u1001@f2-vm:/$ sudo setcap -n 1001 cap_net_raw+ep /mnt/my-file u1001@f2-vm:/$ ls -al /mnt/my-file -rw-rwxr--+ 1 u1001 u1001 0 Oct 28 22:14 /mnt/my-file u1001@f2-vm:/$ ls -al /home/ubuntu/my-file -rw-rwxr--+ 1 ubuntu ubuntu 0 Oct 28 22:14 /home/ubuntu/my-file u1001@f2-vm:/$ getfacl /mnt/my-file getfacl: Removing leading '/' from absolute path names # file: mnt/my-file # owner: u1001 # group: u1001 user::rw- user:u1001:rwx group::rw- mask::rwx other::r-- u1001@f2-vm:/$ getfacl /home/ubuntu/my-file getfacl: Removing leading '/' from absolute path names # file: home/ubuntu/my-file # owner: ubuntu # group: ubuntu user::rw- user:ubuntu:rwx group::rw- mask::rwx other::r--" * tag 'idmapped-mounts-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux: (41 commits) xfs: remove the possibly unused mp variable in xfs_file_compat_ioctl xfs: support idmapped mounts ext4: support idmapped mounts fat: handle idmapped mounts tests: add mount_setattr() selftests fs: introduce MOUNT_ATTR_IDMAP fs: add mount_setattr() fs: add attr_flags_to_mnt_flags helper fs: split out functions to hold writers namespace: only take read lock in do_reconfigure_mnt() mount: make {lock,unlock}_mount_hash() static namespace: take lock_mount_hash() directly when changing flags nfs: do not export idmapped mounts overlayfs: do not mount on top of idmapped mounts ecryptfs: do not mount on top of idmapped mounts ima: handle idmapped mounts apparmor: handle idmapped mounts fs: make helpers idmap mount aware exec: handle idmapped mounts would_dump: handle idmapped mounts ...
| * fs: make helpers idmap mount awareChristian Brauner2021-01-247-18/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Extend some inode methods with an additional user namespace argument. A filesystem that is aware of idmapped mounts will receive the user namespace the mount has been marked with. This can be used for additional permission checking and also to enable filesystems to translate between uids and gids if they need to. We have implemented all relevant helpers in earlier patches. As requested we simply extend the exisiting inode method instead of introducing new ones. This is a little more code churn but it's mostly mechanical and doesnt't leave us with additional inode methods. Link: https://lore.kernel.org/r/20210121131959.646623-25-christian.brauner@ubuntu.com Cc: Christoph Hellwig <hch@lst.de> Cc: David Howells <dhowells@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: linux-fsdevel@vger.kernel.org Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
| * acl: handle idmapped mountsChristian Brauner2021-01-244-5/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The posix acl permission checking helpers determine whether a caller is privileged over an inode according to the acls associated with the inode. Add helpers that make it possible to handle acls on idmapped mounts. The vfs and the filesystems targeted by this first iteration make use of posix_acl_fix_xattr_from_user() and posix_acl_fix_xattr_to_user() to translate basic posix access and default permissions such as the ACL_USER and ACL_GROUP type according to the initial user namespace (or the superblock's user namespace) to and from the caller's current user namespace. Adapt these two helpers to handle idmapped mounts whereby we either map from or into the mount's user namespace depending on in which direction we're translating. Similarly, cap_convert_nscap() is used by the vfs to translate user namespace and non-user namespace aware filesystem capabilities from the superblock's user namespace to the caller's user namespace. Enable it to handle idmapped mounts by accounting for the mount's user namespace. In addition the fileystems targeted in the first iteration of this patch series make use of the posix_acl_chmod() and, posix_acl_update_mode() helpers. Both helpers perform permission checks on the target inode. Let them handle idmapped mounts. These two helpers are called when posix acls are set by the respective filesystems to handle this case we extend the ->set() method to take an additional user namespace argument to pass the mount's user namespace down. Link: https://lore.kernel.org/r/20210121131959.646623-9-christian.brauner@ubuntu.com Cc: Christoph Hellwig <hch@lst.de> Cc: David Howells <dhowells@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: linux-fsdevel@vger.kernel.org Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
| * attr: handle idmapped mountsChristian Brauner2021-01-241-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When file attributes are changed most filesystems rely on the setattr_prepare(), setattr_copy(), and notify_change() helpers for initialization and permission checking. Let them handle idmapped mounts. If the inode is accessed through an idmapped mount map it into the mount's user namespace. Afterwards the checks are identical to non-idmapped mounts. If the initial user namespace is passed nothing changes so non-idmapped mounts will see identical behavior as before. Helpers that perform checks on the ia_uid and ia_gid fields in struct iattr assume that ia_uid and ia_gid are intended values and have already been mapped correctly at the userspace-kernelspace boundary as we already do today. If the initial user namespace is passed nothing changes so non-idmapped mounts will see identical behavior as before. Link: https://lore.kernel.org/r/20210121131959.646623-8-christian.brauner@ubuntu.com Cc: Christoph Hellwig <hch@lst.de> Cc: David Howells <dhowells@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: linux-fsdevel@vger.kernel.org Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
| * inode: make init and permission helpers idmapped mount awareChristian Brauner2021-01-242-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The inode_owner_or_capable() helper determines whether the caller is the owner of the inode or is capable with respect to that inode. Allow it to handle idmapped mounts. If the inode is accessed through an idmapped mount it according to the mount's user namespace. Afterwards the checks are identical to non-idmapped mounts. If the initial user namespace is passed nothing changes so non-idmapped mounts will see identical behavior as before. Similarly, allow the inode_init_owner() helper to handle idmapped mounts. It initializes a new inode on idmapped mounts by mapping the fsuid and fsgid of the caller from the mount's user namespace. If the initial user namespace is passed nothing changes so non-idmapped mounts will see identical behavior as before. Link: https://lore.kernel.org/r/20210121131959.646623-7-christian.brauner@ubuntu.com Cc: Christoph Hellwig <hch@lst.de> Cc: David Howells <dhowells@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: linux-fsdevel@vger.kernel.org Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: James Morris <jamorris@linux.microsoft.com> Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
| * namei: make permission helpers idmapped mount awareChristian Brauner2021-01-241-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The two helpers inode_permission() and generic_permission() are used by the vfs to perform basic permission checking by verifying that the caller is privileged over an inode. In order to handle idmapped mounts we extend the two helpers with an additional user namespace argument. On idmapped mounts the two helpers will make sure to map the inode according to the mount's user namespace and then peform identical permission checks to inode_permission() and generic_permission(). If the initial user namespace is passed nothing changes so non-idmapped mounts will see identical behavior as before. Link: https://lore.kernel.org/r/20210121131959.646623-6-christian.brauner@ubuntu.com Cc: Christoph Hellwig <hch@lst.de> Cc: David Howells <dhowells@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: linux-fsdevel@vger.kernel.org Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: James Morris <jamorris@linux.microsoft.com> Acked-by: Serge Hallyn <serge@hallyn.com> Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
* | block: use an on-stack bio in blkdev_issue_flushChristoph Hellwig2021-01-271-1/+1
|/ | | | | | | | | | There is no point in allocating memory for a synchronous flush. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> Acked-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* reiserfs: add check for an invalid ih_entry_countRustam Kovhaev2020-11-261-0/+6
| | | | | | | | | | | | | | when directory item has an invalid value set for ih_entry_count it might trigger use-after-free or out-of-bounds read in bin_search_in_dir_item() ih_entry_count * IH_SIZE for directory item should not be larger than ih_item_len Link: https://lore.kernel.org/r/20201101140958.3650143-1-rkovhaev@gmail.com Reported-and-tested-by: syzbot+83b6f7cf9922cae5c4d7@syzkaller.appspotmail.com Link: https://syzkaller.appspot.com/bug?extid=83b6f7cf9922cae5c4d7 Signed-off-by: Rustam Kovhaev <rkovhaev@gmail.com> Signed-off-by: Jan Kara <jack@suse.cz>
* reiserfs: Fix oops during mountJan Kara2020-10-011-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | With suitably crafted reiserfs image and mount command reiserfs will crash when trying to verify that XATTR_ROOT directory can be looked up in / as that recurses back to xattr code like: xattr_lookup+0x24/0x280 fs/reiserfs/xattr.c:395 reiserfs_xattr_get+0x89/0x540 fs/reiserfs/xattr.c:677 reiserfs_get_acl+0x63/0x690 fs/reiserfs/xattr_acl.c:209 get_acl+0x152/0x2e0 fs/posix_acl.c:141 check_acl fs/namei.c:277 [inline] acl_permission_check fs/namei.c:309 [inline] generic_permission+0x2ba/0x550 fs/namei.c:353 do_inode_permission fs/namei.c:398 [inline] inode_permission+0x234/0x4a0 fs/namei.c:463 lookup_one_len+0xa6/0x200 fs/namei.c:2557 reiserfs_lookup_privroot+0x85/0x1e0 fs/reiserfs/xattr.c:972 reiserfs_fill_super+0x2b51/0x3240 fs/reiserfs/super.c:2176 mount_bdev+0x24f/0x360 fs/super.c:1417 Fix the problem by bailing from reiserfs_xattr_get() when xattrs are not yet initialized. CC: stable@vger.kernel.org Reported-by: syzbot+9b33c9b118d77ff59b6f@syzkaller.appspotmail.com Signed-off-by: Jan Kara <jack@suse.cz>
* reiserfs: Initialize inode keys properlyJan Kara2020-09-221-5/+1
| | | | | | | | | | reiserfs_read_locked_inode() didn't initialize key length properly. Use _make_cpu_key() macro for key initialization so that all key member are properly initialized. CC: stable@vger.kernel.org Reported-by: syzbot+d94d02749498bb7bab4b@syzkaller.appspotmail.com Signed-off-by: Jan Kara <jack@suse.cz>
* reiserfs: only call unlock_new_inode() if I_NEWEric Biggers2020-09-161-1/+2
| | | | | | | | | | | | | | | | unlock_new_inode() is only meant to be called after a new inode has already been inserted into the hash table. But reiserfs_new_inode() can call it even before it has inserted the inode, triggering the WARNING in unlock_new_inode(). Fix this by only calling unlock_new_inode() if the inode has the I_NEW flag set, indicating that it's in the table. This addresses the syzbot report "WARNING in unlock_new_inode" (https://syzkaller.appspot.com/bug?extid=187510916eb6a14598f7). Link: https://lore.kernel.org/r/20200628070057.820213-1-ebiggers@kernel.org Reported-by: syzbot+187510916eb6a14598f7@syzkaller.appspotmail.com Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Jan Kara <jack@suse.cz>
* reiserfs: Fix memory leak in reiserfs_parse_options()Jan Kara2020-08-281-4/+4
| | | | | | | | | When a usrjquota or grpjquota mount option is used multiple times, we will leak memory allocated for the file name. Make sure the last setting is used and all the previous ones are properly freed. Reported-by: syzbot+c9e294bbe0333a6b7640@syzkaller.appspotmail.com Signed-off-by: Jan Kara <jack@suse.cz>
* Merge tag 'for_v5.9-rc1' of ↵Linus Torvalds2020-08-065-9/+9
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs Pull ext2, udf, reiserfs, quota cleanups and minor fixes from Jan Kara: "A few ext2 fixups and then several (mostly comment and documentation) cleanups in ext2, udf, reiserfs, and quota" * tag 'for_v5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: reiserfs: delete duplicated words udf: osta_udf.h: delete a duplicated word reiserfs: reiserfs.h: delete a duplicated word ext2: ext2.h: fix duplicated word + typos udf: Replace HTTP links with HTTPS ones quota: Fixup http links in quota doc Replace HTTP links with HTTPS ones: DISKQUOTA ext2: initialize quota info in ext2_xattr_set() ext2: fix some incorrect comments in inode.c ext2: remove nocheck option ext2: fix missing percpu_counter_inc ext2: ext2_find_entry() return -ENOENT if no entry found ext2: propagate errors up to ext2_find_entry()'s callers ext2: fix improper assignment for e_value_offs
| * reiserfs: delete duplicated wordsRandy Dunlap2020-08-054-8/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Delete repeated words in fs/reiserfs/. {from, not, we, are} Link: https://lore.kernel.org/r/20200805024925.12281-1-rdunlap@infradead.org Signed-off-by: Randy Dunlap <rdunlap@infradead.org> To: linux-fsdevel@vger.kernel.org Cc: Jan Kara <jack@suse.com> Cc: Jeff Mahoney <jeffm@suse.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: reiserfs-devel@vger.kernel.org Signed-off-by: Jan Kara <jack@suse.cz>
| * reiserfs: reiserfs.h: delete a duplicated wordRandy Dunlap2020-07-271-1/+1
| | | | | | | | | | | | | | | | | | | | | | Drop the repeated word "than" in a comment. Link: https://lore.kernel.org/r/20200720001431.29718-1-rdunlap@infradead.org Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jan Kara <jack@suse.cz> Cc: Jeff Mahoney <jeffm@suse.com> Cc: reiserfs-devel@vger.kernel.org Signed-off-by: Jan Kara <jack@suse.cz>
* | block: move block-related definitions out of fs.hChristoph Hellwig2020-06-241-0/+1
|/ | | | | | | | Move most of the block related definition out of fs.h into more suitable headers. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* Merge tag 'for_v5.8-rc1' of ↵Linus Torvalds2020-06-041-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs Pull ext2 and reiserfs cleanups from Jan Kara: "Two small cleanups for ext2 and one for reiserfs" * tag 'for_v5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: reiserfs: Replace kmalloc with kcalloc in the comment ext2: code cleanup by removing ifdef macro surrounding ext2: Fix i_op setting for special inode
| * reiserfs: Replace kmalloc with kcalloc in the commentLiao Pingfang2020-05-291-1/+1
| | | | | | | | | | | | | | | | | | Use kcalloc instead of kmalloc in the comment according to the previous kcalloc() call. Link: https://lore.kernel.org/r/1590714150-15895-1-git-send-email-wang.yi59@zte.com.cn Signed-off-by: Liao Pingfang <liao.pingfang@zte.com.cn> Signed-off-by: Jan Kara <jack@suse.cz>
* | Merge tag 'for-5.8/block-2020-06-01' of git://git.kernel.dk/linux-blockLinus Torvalds2020-06-021-1/+1
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull block updates from Jens Axboe: "Core block changes that have been queued up for this release: - Remove dead blk-throttle and blk-wbt code (Guoqing) - Include pid in blktrace note traces (Jan) - Don't spew I/O errors on wouldblock termination (me) - Zone append addition (Johannes, Keith, Damien) - IO accounting improvements (Konstantin, Christoph) - blk-mq hardware map update improvements (Ming) - Scheduler dispatch improvement (Salman) - Inline block encryption support (Satya) - Request map fixes and improvements (Weiping) - blk-iocost tweaks (Tejun) - Fix for timeout failing with error injection (Keith) - Queue re-run fixes (Douglas) - CPU hotplug improvements (Christoph) - Queue entry/exit improvements (Christoph) - Move DMA drain handling to the few drivers that use it (Christoph) - Partition handling cleanups (Christoph)" * tag 'for-5.8/block-2020-06-01' of git://git.kernel.dk/linux-block: (127 commits) block: mark bio_wouldblock_error() bio with BIO_QUIET blk-wbt: rename __wbt_update_limits to wbt_update_limits blk-wbt: remove wbt_update_limits blk-throttle: remove tg_drain_bios blk-throttle: remove blk_throtl_drain null_blk: force complete for timeout request blk-mq: drain I/O when all CPUs in a hctx are offline blk-mq: add blk_mq_all_tag_iter blk-mq: open code __blk_mq_alloc_request in blk_mq_alloc_request_hctx blk-mq: use BLK_MQ_NO_TAG in more places blk-mq: rename BLK_MQ_TAG_FAIL to BLK_MQ_NO_TAG blk-mq: move more request initialization to blk_mq_rq_ctx_init blk-mq: simplify the blk_mq_get_request calling convention blk-mq: remove the bio argument to ->prepare_request nvme: force complete cancelled requests blk-mq: blk-mq: provide forced completion method block: fix a warning when blkdev.h is included for !CONFIG_BLOCK builds block: blk-crypto-fallback: remove redundant initialization of variable err block: reduce part_stat_lock() scope block: use __this_cpu_add() instead of access by smp_processor_id() ...
| * | block: remove the error_sector argument to blkdev_issue_flushChristoph Hellwig2020-05-221-1/+1
| |/ | | | | | | | | | | | | | | The argument isn't used by any caller, and drivers don't fill out bi_sector for flush requests either. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* / fs: convert mpage_readpages to mpage_readaheadMatthew Wilcox (Oracle)2020-06-021-5/+3
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement the new readahead aop and convert all callers (block_dev, exfat, ext2, fat, gfs2, hpfs, isofs, jfs, nilfs2, ocfs2, omfs, qnx6, reiserfs & udf). The callers are all trivial except for GFS2 & OCFS2. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Junxiao Bi <junxiao.bi@oracle.com> # ocfs2 Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com> # ocfs2 Reviewed-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: John Hubbard <jhubbard@nvidia.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: William Kucharski <william.kucharski@oracle.com> Cc: Chao Yu <yuchao0@huawei.com> Cc: Cong Wang <xiyou.wangcong@gmail.com> Cc: Darrick J. Wong <darrick.wong@oracle.com> Cc: Eric Biggers <ebiggers@google.com> Cc: Gao Xiang <gaoxiang25@huawei.com> Cc: Jaegeuk Kim <jaegeuk@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Zi Yan <ziy@nvidia.com> Cc: Johannes Thumshirn <johannes.thumshirn@wdc.com> Cc: Miklos Szeredi <mszeredi@redhat.com> Link: http://lkml.kernel.org/r/20200414150233.24495-17-willy@infradead.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* reiserfs: clean up several indentation issuesColin Ian King2020-04-073-11/+12
| | | | | | | | | There are several places where code is indented incorrectly. Fix these. Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Link: http://lkml.kernel.org/r/20200325135018.113431-1-colin.king@canonical.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* block: remove __bdevnameChristoph Hellwig2020-03-241-3/+2
| | | | | | | | | | | | | There is no good reason for __bdevname to exist. Just open code printing the string in the callers. For three of them the format string can be trivially merged into existing printk statements, and in init/do_mounts.c we can at least do the scnprintf once at the start of the function, and unconditional of CONFIG_BLOCK to make the output for tiny configfs a little more helpful. Acked-by: Theodore Ts'o <tytso@mit.edu> # for ext4 Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* Merge branch 'akpm' (patches from Andrew)Linus Torvalds2020-01-311-1/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull updates from Andrew Morton: "Most of -mm and quite a number of other subsystems: hotfixes, scripts, ocfs2, misc, lib, binfmt, init, reiserfs, exec, dma-mapping, kcov. MM is fairly quiet this time. Holidays, I assume" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (118 commits) kcov: ignore fault-inject and stacktrace include/linux/io-mapping.h-mapping: use PHYS_PFN() macro in io_mapping_map_atomic_wc() execve: warn if process starts with executable stack reiserfs: prevent NULL pointer dereference in reiserfs_insert_item() init/main.c: fix misleading "This architecture does not have kernel memory protection" message init/main.c: fix quoted value handling in unknown_bootoption init/main.c: remove unnecessary repair_env_string in do_initcall_level init/main.c: log arguments and environment passed to init fs/binfmt_elf.c: coredump: allow process with empty address space to coredump fs/binfmt_elf.c: coredump: delete duplicated overflow check fs/binfmt_elf.c: coredump: allocate core ELF header on stack fs/binfmt_elf.c: make BAD_ADDR() unlikely fs/binfmt_elf.c: better codegen around current->mm fs/binfmt_elf.c: don't copy ELF header around fs/binfmt_elf.c: fix ->start_code calculation fs/binfmt_elf.c: smaller code generation around auxv vector fill lib/find_bit.c: uninline helper _find_next_bit() lib/find_bit.c: join _find_next_bit{_le} uapi: rename ext2_swab() to swab() and share globally in swab.h lib/scatterlist.c: adjust indentation in __sg_alloc_table ...
| * reiserfs: prevent NULL pointer dereference in reiserfs_insert_item()Yunfeng Ye2020-01-311-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The variable inode may be NULL in reiserfs_insert_item(), but there is no check before accessing the member of inode. Fix this by adding NULL pointer check before calling reiserfs_debug(). Link: http://lkml.kernel.org/r/79c5135d-ff25-1cc9-4e99-9f572b88cc00@huawei.com Signed-off-by: Yunfeng Ye <yeyunfeng@huawei.com> Cc: zhengbin <zhengbin13@huawei.com> Cc: Hu Shiyuan <hushiyuan@huawei.com> Cc: Feilong Lin <linfeilong@huawei.com> Cc: Jan Kara <jack@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge tag 'for_v5.6-rc1' of ↵Linus Torvalds2020-01-304-10/+3
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs Pull UDF, quota, reiserfs, ext2 fixes and cleanups from Jan Kara: "A few assorted fixes and cleanups for udf, quota, reiserfs, and ext2" * tag 'for_v5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: fs/reiserfs: remove unused macros fs/quota: remove unused macro udf: Clarify meaning of f_files in udf_statfs udf: Allow writing to 'Rewritable' partitions udf: Disallow R/W mode for disk with Metadata partition udf: Fix meaning of ENTITYID_FLAGS_* macros to be really bitwise-or flags udf: Fix free space reporting for metadata and virtual partitions udf: Update header files to UDF 2.60 udf: Move OSTA Identifier Suffix macros from ecma_167.h to osta_udf.h udf: Fix spelling in EXT_NEXT_EXTENT_ALLOCDESCS ext2: Adjust indentation in ext2_fill_super quota: avoid time_t in v1_disk_dqblk definition reiserfs: Fix spurious unlock in reiserfs_fill_super() error handling reiserfs: Fix memory leak of journal device string ext2: set proper errno in error case of ext2_fill_super()
| * fs/reiserfs: remove unused macrosAlex Shi2020-01-213-9/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | these macros are never used from introduced. better to remove them. Link: https://lore.kernel.org/r/1579602338-57079-1-git-send-email-alex.shi@linux.alibaba.com Signed-off-by: Alex Shi <alex.shi@linux.alibaba.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jan Kara <jack@suse.cz> Cc: Bharath Vedartham <linux.bhar@gmail.com> Cc: Hariprasad Kelam <hariprasad.kelam@gmail.com> Cc: Jason Yan <yanaijie@huawei.com> Cc: zhengbin <zhengbin13@huawei.com> Cc: Jia-Ju Bai <baijiaju1990@gmail.com> Cc: reiserfs-devel@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Jan Kara <jack@suse.cz>
| * reiserfs: Fix spurious unlock in reiserfs_fill_super() error handlingJan Kara2019-12-161-1/+1
| | | | | | | | | | | | | | | | | | When we fail to allocate string for journal device name we jump to 'error' label which tries to unlock reiserfs write lock which is not held. Jump to 'error_unlocked' instead. Fixes: f32485be8397 ("reiserfs: delay reiserfs lock until journal initialization") Signed-off-by: Jan Kara <jack@suse.cz>
| * reiserfs: Fix memory leak of journal device stringJan Kara2019-12-161-0/+2
| | | | | | | | | | | | | | | | | | | | | | When a filesystem is mounted with jdev mount option, we store the journal device name in an allocated string in superblock. However we fail to ever free that string. Fix it. Reported-by: syzbot+1c6756baf4b16b94d2a6@syzkaller.appspotmail.com Fixes: c3aa077648e1 ("reiserfs: Properly display mount options in /proc/mounts") CC: stable@vger.kernel.org Signed-off-by: Jan Kara <jack@suse.cz>
* | reiserfs: fix handling of -EOPNOTSUPP in reiserfs_for_each_xattrJeff Mahoney2020-01-161-2/+6
|/ | | | | | | | | | | | | | | | | | | | | | Commit 60e4cf67a58 (reiserfs: fix extended attributes on the root directory) introduced a regression open_xa_root started returning -EOPNOTSUPP but it was not handled properly in reiserfs_for_each_xattr. When the reiserfs module is built without CONFIG_REISERFS_FS_XATTR, deleting an inode would result in a warning and chowning an inode would also result in a warning and then fail to complete. With CONFIG_REISERFS_FS_XATTR enabled, the xattr root would always be present for read-write operations. This commit handles -EOPNOSUPP in the same way -ENODATA is handled. Fixes: 60e4cf67a582 ("reiserfs: fix extended attributes on the root directory") CC: stable@vger.kernel.org # Commit 60e4cf67a58 was picked up by stable Link: https://lore.kernel.org/r/20200115180059.6935-1-jeffm@suse.com Reported-by: Michael Brunnbauer <brunni@netestate.de> Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Jan Kara <jack@suse.cz>
* reiserfs: replace open-coded atomic_dec_and_mutex_lock()Nikitas Angelinas2019-11-051-8/+2
| | | | | | | | | Replace the open-coded logic of atomic_dec_and_mutex_lock() in reiserfs_file_release(). Link: https://lore.kernel.org/r/20191103094431.GA18576-nikitas.angelinas@gmail.com Signed-off-by: Nikitas Angelinas <nikitas.angelinas@gmail.com> Signed-off-by: Jan Kara <jack@suse.cz>
* reiserfs: fix extended attributes on the root directoryJeff Mahoney2019-10-316-14/+32
| | | | | | | | | | | | | | | | | | | | | | Since commit d0a5b995a308 (vfs: Add IOP_XATTR inode operations flag) extended attributes haven't worked on the root directory in reiserfs. This is due to reiserfs conditionally setting the sb->s_xattrs handler array depending on whether it located or create the internal privroot directory. It necessarily does this after the root inode is already read in. The IOP_XATTR flag is set during inode initialization, so it never gets set on the root directory. This commit unconditionally assigns sb->s_xattrs and clears IOP_XATTR on internal inodes. The old return values due to the conditional assignment are handled via open_xa_root, which now returns EOPNOTSUPP as the VFS would have done. Link: https://lore.kernel.org/r/20191024143127.17509-1-jeffm@suse.com CC: stable@vger.kernel.org Fixes: d0a5b995a308 ("vfs: Add IOP_XATTR inode operations flag") Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Jan Kara <jack@suse.cz>
* fs/reiserfs/do_balan.c: remove set but not used variableJason Yan2019-09-251-2/+1
| | | | | | | | | | | | | | | Fix the following gcc warning: fs/reiserfs/do_balan.c: In function balance_leaf_insert_right: fs/reiserfs/do_balan.c:629:6: warning: variable ret set but not used [-Wunused-but-set-variable] Link: http://lkml.kernel.org/r/20190827032932.46622-2-yanaijie@huawei.com Signed-off-by: Jason Yan <yanaijie@huawei.com> Cc: zhengbin <zhengbin13@huawei.com> Cc: Jan Kara <jack@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/reiserfs/journal.c: remove set but not used variableJason Yan2019-09-251-4/+3
| | | | | | | | | | | | | | | Fix the following gcc warning: fs/reiserfs/journal.c: In function flush_used_journal_lists: fs/reiserfs/journal.c:1791:6: warning: variable ret set but not used [-Wunused-but-set-variable] Link: http://lkml.kernel.org/r/20190827032932.46622-1-yanaijie@huawei.com Signed-off-by: Jason Yan <yanaijie@huawei.com> Cc: zhengbin <zhengbin13@huawei.com> Cc: Jan Kara <jack@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/reiserfs/do_balan.c: remove set but not used variableszhengbin2019-09-251-11/+1
| | | | | | | | | | | | | | | | | | fs/reiserfs/do_balan.c: In function balance_leaf_when_delete: fs/reiserfs/do_balan.c:245:20: warning: variable ih set but not used [-Wunused-but-set-variable] fs/reiserfs/do_balan.c: In function balance_leaf_insert_left: fs/reiserfs/do_balan.c:301:7: warning: variable version set but not used [-Wunused-but-set-variable] fs/reiserfs/do_balan.c: In function balance_leaf_insert_right: fs/reiserfs/do_balan.c:649:7: warning: variable version set but not used [-Wunused-but-set-variable] fs/reiserfs/do_balan.c: In function balance_leaf_new_nodes_insert: fs/reiserfs/do_balan.c:953:7: warning: variable version set but not used [-Wunused-but-set-variable] Link: http://lkml.kernel.org/r/1566379929-118398-8-git-send-email-zhengbin13@huawei.com Signed-off-by: zhengbin <zhengbin13@huawei.com> Reported-by: Hulk Robot <hulkci@huawei.com> Cc: Jan Kara <jack@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/reiserfs/fix_node.c: remove set but not used variableszhengbin2019-09-251-5/+1
| | | | | | | | | | | | | | fs/reiserfs/fix_node.c: In function get_num_ver: fs/reiserfs/fix_node.c:379:6: warning: variable cur_free set but not used [-Wunused-but-set-variable] fs/reiserfs/fix_node.c: In function dc_check_balance_internal: fs/reiserfs/fix_node.c:1737:6: warning: variable maxsize set but not used [-Wunused-but-set-variable] Link: http://lkml.kernel.org/r/1566379929-118398-7-git-send-email-zhengbin13@huawei.com Signed-off-by: zhengbin <zhengbin13@huawei.com> Reported-by: Hulk Robot <hulkci@huawei.com> Cc: Jan Kara <jack@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/reiserfs/prints.c: remove set but not used variableszhengbin2019-09-251-3/+0
| | | | | | | | | | | | | | Fixes gcc '-Wunused-but-set-variable' warning: fs/reiserfs/prints.c: In function check_internal_block_head: fs/reiserfs/prints.c:749:21: warning: variable blkh set but not used [-Wunused-but-set-variable] Link: http://lkml.kernel.org/r/1566379929-118398-6-git-send-email-zhengbin13@huawei.com Signed-off-by: zhengbin <zhengbin13@huawei.com> Reported-by: Hulk Robot <hulkci@huawei.com> Cc: Jan Kara <jack@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/reiserfs/objectid.c: remove set but not used variableszhengbin2019-09-251-2/+1
| | | | | | | | | | | | | | Fixes gcc '-Wunused-but-set-variable' warning: fs/reiserfs/objectid.c: In function reiserfs_convert_objectid_map_v1: fs/reiserfs/objectid.c:186:25: warning: variable new_objectid_map set but not used [-Wunused-but-set-variable] Link: http://lkml.kernel.org/r/1566379929-118398-5-git-send-email-zhengbin13@huawei.com Signed-off-by: zhengbin <zhengbin13@huawei.com> Reported-by: Hulk Robot <hulkci@huawei.com> Cc: Jan Kara <jack@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/reiserfs/lbalance.c: remove set but not used variableszhengbin2019-09-251-2/+1
| | | | | | | | | | | | | | Fixes gcc '-Wunused-but-set-variable' warning: fs/reiserfs/lbalance.c: In function leaf_paste_entries: fs/reiserfs/lbalance.c:1325:9: warning: variable old_entry_num set but not used [-Wunused-but-set-variable] Link: http://lkml.kernel.org/r/1566379929-118398-4-git-send-email-zhengbin13@huawei.com Signed-off-by: zhengbin <zhengbin13@huawei.com> Reported-by: Hulk Robot <hulkci@huawei.com> Cc: Jan Kara <jack@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/reiserfs/stree.c: remove set but not used variableszhengbin2019-09-251-4/+0
| | | | | | | | | | | | | | Fixes gcc '-Wunused-but-set-variable' warning: fs/reiserfs/stree.c: In function search_by_key: fs/reiserfs/stree.c:596:6: warning: variable right_neighbor_of_leaf_node set but not used [-Wunused-but-set-variable] Link: http://lkml.kernel.org/r/1566379929-118398-3-git-send-email-zhengbin13@huawei.com Signed-off-by: zhengbin <zhengbin13@huawei.com> Reported-by: Hulk Robot <hulkci@huawei.com> Cc: Jan Kara <jack@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/reiserfs/journal.c: remove set but not used variableszhengbin2019-09-251-9/+1
| | | | | | | | | | | | | | | | | | | | Fixes gcc '-Wunused-but-set-variable' warning: fs/reiserfs/journal.c: In function flush_older_commits: fs/reiserfs/journal.c:894:15: warning: variable first_trans_id set but not used [-Wunused-but-set-variable] fs/reiserfs/journal.c: In function flush_journal_list: fs/reiserfs/journal.c:1354:38: warning: variable last set but not used [-Wunused-but-set-variable] fs/reiserfs/journal.c: In function do_journal_release: fs/reiserfs/journal.c:1916:6: warning: variable flushed set but not used [-Wunused-but-set-variable] fs/reiserfs/journal.c: In function do_journal_end: fs/reiserfs/journal.c:3993:6: warning: variable old_start set but not used [-Wunused-but-set-variable] Link: http://lkml.kernel.org/r/1566379929-118398-2-git-send-email-zhengbin13@huawei.com Signed-off-by: zhengbin <zhengbin13@huawei.com> Reported-by: Hulk Robot <hulkci@huawei.com> Cc: Jan Kara <jack@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs: reiserfs: remove unnecessary check of bh in remove_from_transaction()Jia-Ju Bai2019-09-251-3/+2
| | | | | | | | | | | | | | | | | | | | | On lines 3430-3434, bh has been assured to be non-null: cn = get_journal_hash_dev(sb, journal->j_hash_table, blocknr); if (!cn || !cn->bh) { return ret; } bh = cn->bh; Thus, the check of bh on line 3447 is unnecessary and can be removed. Thank Andrew Morton for good advice. Link: http://lkml.kernel.org/r/20190727084019.11307-1-baijiaju1990@gmail.com Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com> Reviewed-by: Jan Kara <jack@suse.cz> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Hariprasad Kelam <hariprasad.kelam@gmail.com> Cc: Bharath Vedartham <linux.bhar@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs: Fill in max and min timestamps in superblockDeepa Dinamani2019-08-301-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fill in the appropriate limits to avoid inconsistencies in the vfs cached inode times when timestamps are outside the permitted range. Even though some filesystems are read-only, fill in the timestamps to reflect the on-disk representation. Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Acked-By: Tigran Aivazian <aivazian.tigran@gmail.com> Acked-by: Jeff Layton <jlayton@kernel.org> Cc: aivazian.tigran@gmail.com Cc: al@alarsen.net Cc: coda@cs.cmu.edu Cc: darrick.wong@oracle.com Cc: dushistov@mail.ru Cc: dwmw2@infradead.org Cc: hch@infradead.org Cc: jack@suse.com Cc: jaharkes@cs.cmu.edu Cc: luisbg@kernel.org Cc: nico@fluxnic.net Cc: phillip@squashfs.org.uk Cc: richard@nod.at Cc: salah.triki@gmail.com Cc: shaggy@kernel.org Cc: linux-xfs@vger.kernel.org Cc: codalist@coda.cs.cmu.edu Cc: linux-ext4@vger.kernel.org Cc: linux-mtd@lists.infradead.org Cc: jfs-discussion@lists.sourceforge.net Cc: reiserfs-devel@vger.kernel.org
* fs/reiserfs/journal.c: change return type of dirty_one_transactionHariprasad Kelam2019-07-161-4/+2
| | | | | | | | | | | | | | | | | | Change return type of dirty_one_transaction from int to void. As this function always return success. Fixes below issue reported by coccicheck: fs/reiserfs/journal.c:1690:5-8: Unneeded variable: "ret". Return "0" on line 1719 Link: http://lkml.kernel.org/r/20190702175430.GA5882@hari-Inspiron-1545 Signed-off-by: Hariprasad Kelam <hariprasad.kelam@gmail.com> Reviewed-by: Jan Kara <jack@suse.cz> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Bharath Vedartham <linux.bhar@gmail.com> Cc: Hariprasad Kelam <hariprasad.kelam@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* vfs: create a generic checking and prep function for FS_IOC_SETFLAGSDarrick J. Wong2019-07-011-6/+4
| | | | | | | | | | | | | | | Create a generic function to check incoming FS_IOC_SETFLAGS flag values and later prepare the inode for updates so that we can standardize the implementations that follow ext4's flag values. Note that the efivarfs implementation no longer fails a no-op SETFLAGS without CAP_LINUX_IMMUTABLE since that's the behavior in ext*. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Christoph Hellwig <hch@lst.de> Acked-by: David Sterba <dsterba@suse.com> Reviewed-by: Bob Peterson <rpeterso@redhat.com>
* treewide: Add SPDX license identifier - Makefile/KconfigThomas Gleixner2019-05-211-0/+1
| | | | | | | | | | | | | | 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 <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* reiserfs: add comment to explain endianness issue in xattr_hashBharath Vedartham2019-05-141-0/+9
| | | | | | | | | | | | | | | | | | | | | csum_partial() gives different results for little-endian and big-endian hosts. This causes images created on little-endian hosts and mounted on big endian hosts to see csum mismatches. This causes an endianness bug. Sparse gives a warning as csum_partial returns a restricted integer type __wsum_t and xattr_hash expects __u32. This warning acts as a reminder for this bug and should not be suppressed. This comment aims to convey these endianness issues. [akpm@linux-foundation.org: coding-style fixes] Link: http://lkml.kernel.org/r/20190423161831.GA15387@bharath12345-Inspiron-5559 Signed-off-by: Bharath Vedartham <linux.bhar@gmail.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Jann Horn <jannh@google.com> Cc: Jeff Mahoney <jeffm@suse.com> Cc: Jan Kara <jack@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge tag 'fs_for_v5.2-rc1' of ↵Linus Torvalds2019-05-131-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs Pull misc filesystem updates from Jan Kara: "A couple of small bugfixes and cleanups for quota, udf, ext2, and reiserfs" * tag 'fs_for_v5.2-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: quota: check time limit when back out space/inode change fs/quota: erase unused but set variable warning quota: fix wrong indentation udf: fix an uninitialized read bug and remove dead code fs/reiserfs/journal.c: Make remove_journal_hash static quota: remove trailing whitespaces quota: code cleanup for __dquot_alloc_space() ext2: Adjust the comment of function ext2_alloc_branch udf: Explain handling of load_nls() failure
| * fs/reiserfs/journal.c: Make remove_journal_hash staticBharath Vedartham2019-04-151-1/+1
| | | | | | | | | | | | | | | | This fixes the -WDecl sparse warning in journal.c. Function was declared as static void but the definition was void. Signed-off-by: Bharath Vedartham <linux.bhar@gmail.com> Signed-off-by: Jan Kara <jack@suse.cz>
* | reiserfs: convert to ->free_inode()Al Viro2019-05-011-8/+2
|/ | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>