kernel/linux.git/tools/include/uapi/linux/fs.h, branch linux-6.9.y

tools/include: Sync uapi/linux/fs.h with the kernel sources

2024-04-11T17:37:49+00:00

To pick up the changes from: 41bcbe59c3b3f ("fs: FS_IOC_GETUUID") ae8c511757304 ("fs: add FS_IOC_GETFSSYSFSPATH") 73fa7547c70b3 ("vfs: add RWF_NOAPPEND flag for pwritev2") This should be used to beautify fs syscall arguments and it addresses these tools/perf build warnings: Warning: Kernel ABI header differences: diff -u tools/include/uapi/linux/fs.h include/uapi/linux/fs.h Reviewed-by: Jan Kara Reviewed-by: Christian Brauner Cc: Alexander Viro Cc: linux-fsdevel@vger.kernel.org Signed-off-by: Namhyung Kim Link: https://lore.kernel.org/r/20240408185520.1550865-3-namhyung@kernel.org

fs/proc/task_mmu: report SOFT_DIRTY bits through the PAGEMAP_SCAN ioctl

2023-12-11T00:51:35+00:00

The PAGEMAP_SCAN ioctl returns information regarding page table entries. It is more efficient compared to reading pagemap files. CRIU can start to utilize this ioctl, but it needs info about soft-dirty bits to track memory changes. We are aware of a new method for tracking memory changes implemented in the PAGEMAP_SCAN ioctl. For CRIU, the primary advantage of this method is its usability by unprivileged users. However, it is not feasible to transparently replace the soft-dirty tracker with the new one. The main problem here is userfault descriptors that have to be preserved between pre-dump iterations. It means criu continues supporting the soft-dirty method to avoid breakage for current users. The new method will be implemented as a separate feature. [avagin@google.com: update tools/include/uapi/linux/fs.h] Link: https://lkml.kernel.org/r/20231107164139.576046-1-avagin@google.com Link: https://lkml.kernel.org/r/20231106220959.296568-1-avagin@google.com Signed-off-by: Andrei Vagin Reviewed-by: Muhammad Usama Anjum Cc: Michał Mirosław Signed-off-by: Andrew Morton

tools headers UAPI: update linux/fs.h with the kernel sources

2023-10-18T21:34:13+00:00

New IOCTL and macros has been added in the kernel sources. Update the tools header file as well. Link: https://lkml.kernel.org/r/20230821141518.870589-5-usama.anjum@collabora.com Signed-off-by: Muhammad Usama Anjum Cc: Alex Sierra Cc: Al Viro Cc: Andrei Vagin Cc: Axel Rasmussen Cc: Christian Brauner Cc: Cyrill Gorcunov Cc: Dan Williams Cc: David Hildenbrand Cc: Greg Kroah-Hartman Cc: Gustavo A. R. Silva Cc: "Liam R. Howlett" Cc: Matthew Wilcox Cc: Michal Miroslaw Cc: Michał Mirosław Cc: Mike Rapoport (IBM) Cc: Nadav Amit Cc: Pasha Tatashin Cc: Paul Gofman Cc: Peter Xu Cc: Shuah Khan Cc: Suren Baghdasaryan Cc: Vlastimil Babka Cc: Yang Shi Cc: Yun Zhou Signed-off-by: Andrew Morton

treewide: uapi: Replace zero-length arrays with flexible-array members

2022-06-28T19:26:05+00:00

There is a regular need in the kernel to provide a way to declare having a dynamically sized set of trailing elements in a structure. Kernel code should always use “flexible array members”[1] for these cases. The older style of one-element or zero-length arrays should no longer be used[2]. This code was transformed with the help of Coccinelle: (linux-5.19-rc2$ spatch --jobs $(getconf _NPROCESSORS_ONLN) --sp-file script.cocci --include-headers --dir . > output.patch) @@ identifier S, member, array; type T1, T2; @@ struct S { ... T1 member; T2 array[ - 0 ]; }; -fstrict-flex-arrays=3 is coming and we need to land these changes to prevent issues like these in the short future: ../fs/minix/dir.c:337:3: warning: 'strcpy' will always overflow; destination buffer has size 0, but the source string has length 2 (including NUL byte) [-Wfortify-source] strcpy(de3->name, "."); ^ Since these are all [0] to [] changes, the risk to UAPI is nearly zero. If this breaks anything, we can use a union with a new member name. [1] https://en.wikipedia.org/wiki/Flexible_array_member [2] https://www.kernel.org/doc/html/v5.16/process/deprecated.html#zero-length-and-one-element-arrays Link: https://github.com/KSPP/linux/issues/78 Build-tested-by: kernel test robot Link: https://lore.kernel.org/lkml/62b675ec.wKX6AOZ6cbE71vtF%25lkp@intel.com/ Acked-by: Dan Williams # For ndctl.h Signed-off-by: Gustavo A. R. Silva

tools headers UAPI: Sync linux/fs.h with the kernel sources

2021-09-11T19:14:53+00:00

To pick the change in: 7957d93bf32bc211 ("block: add ioctl to read the disk sequence number") It adds a new ioctl, but we are still not using that to generate tables for 'perf trace', so no changes in tooling. This silences this perf build warning: Warning: Kernel ABI header at 'tools/include/uapi/linux/fs.h' differs from latest version at 'include/uapi/linux/fs.h' diff -u tools/include/uapi/linux/fs.h include/uapi/linux/fs.h Cc: Jens Axboe Cc: Matteo Croce Signed-off-by: Arnaldo Carvalho de Melo

tools headers UAPI: Sync linux/fs.h with the kernel sources

2021-05-21T19:00:31+00:00

To pick the trivial change in: 63c8af5687f6b1b7 ("block: uapi: fix comment about block device ioctl") This silences this perf build warning: Warning: Kernel ABI header at 'tools/include/uapi/linux/fs.h' differs from latest version at 'include/uapi/linux/fs.h' diff -u tools/include/uapi/linux/fs.h include/uapi/linux/fs.h Cc: Damien Le Moal Cc: Jens Axboe Signed-off-by: Arnaldo Carvalho de Melo

tools headers UAPI: Sync linux/fs.h with the kernel sources

2020-06-17T16:23:02+00:00

To pick the changes from: b383a73f2b83 ("fs/ext4: Introduce DAX inode flag") And silence this perf build warning: Warning: Kernel ABI header at 'tools/include/uapi/linux/fs.h' differs from latest version at 'include/uapi/linux/fs.h' diff -u tools/include/uapi/linux/fs.h include/uapi/linux/fs.h It causes various beautifiers for things like fspick, fsmount, etc (see below) to get rebuilt, but this specific change doesn't make 'perf trace' be capable of decoding anything new, as we still don't decode what comes from ioctls, just its cmds. Details about the update: $ cp include/uapi/linux/fs.h tools/include/uapi/linux/fs.h $ git diff diff --git a/tools/include/uapi/linux/fs.h b/tools/include/uapi/linux/fs.h index 379a612f8f1d..f44eb0a04afd 100644 --- a/tools/include/uapi/linux/fs.h +++ b/tools/include/uapi/linux/fs.h @@ -262,6 +262,7 @@ struct fsxattr { #define FS_EA_INODE_FL 0x00200000 /* Inode used for large EA */ #define FS_EOFBLOCKS_FL 0x00400000 /* Reserved for ext4 */ #define FS_NOCOW_FL 0x00800000 /* Do not cow file */ +#define FS_DAX_FL 0x02000000 /* Inode is DAX */ #define FS_INLINE_DATA_FL 0x10000000 /* Reserved for ext4 */ #define FS_PROJINHERIT_FL 0x20000000 /* Create with parents projid */ #define FS_CASEFOLD_FL 0x40000000 /* Folder is case insensitive */ $ m make: Entering directory '/home/acme/git/perf/tools/perf' BUILD: Doing 'make -j8' parallel build INSTALL GTK UI CC /tmp/build/perf/builtin-trace.o DESCEND plugins CC /tmp/build/perf/trace/beauty/fsmount.o CC /tmp/build/perf/trace/beauty/fspick.o CC /tmp/build/perf/trace/beauty/mount_flags.o CC /tmp/build/perf/trace/beauty/move_mount.o CC /tmp/build/perf/trace/beauty/renameat.o CC /tmp/build/perf/trace/beauty/sync_file_range.o INSTALL trace_plugins LD /tmp/build/perf/trace/beauty/perf-in.o LD /tmp/build/perf/perf-in.o LINK /tmp/build/perf/perf Cc: Adrian Hunter Cc: Ira Weiny Cc: Jiri Olsa Cc: Namhyung Kim Cc: Theodore Ts'o Signed-off-by: Arnaldo Carvalho de Melo

tools headers uapi: Sync linux/fs.h with the kernel sources

2019-09-30T20:29:22+00:00

To pick the changes from: 78a1b96bcf7a ("fscrypt: add FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS ioctl") 23c688b54016 ("fscrypt: allow unprivileged users to add/remove keys for v2 policies") 5dae460c2292 ("fscrypt: v2 encryption policy support") 5a7e29924dac ("fscrypt: add FS_IOC_GET_ENCRYPTION_KEY_STATUS ioctl") b1c0ec3599f4 ("fscrypt: add FS_IOC_REMOVE_ENCRYPTION_KEY ioctl") 22d94f493bfb ("fscrypt: add FS_IOC_ADD_ENCRYPTION_KEY ioctl") 3b6df59bc4d2 ("fscrypt: use FSCRYPT_* definitions, not FS_*") 2336d0deb2d4 ("fscrypt: use FSCRYPT_ prefix for uapi constants") 7af0ab0d3aab ("fs, fscrypt: move uapi definitions to new header ") That don't trigger any changes in tooling, as it so far is used only for: $ grep -l 'fs\.h' tools/perf/trace/beauty/*.sh | xargs grep regex= tools/perf/trace/beauty/rename_flags.sh:regex='^[[:space:]]*#[[:space:]]*define[[:space:]]+RENAME_([[:alnum:]_]+)[[:space:]]+$1[[:space:]]*<<[[:space:]]*([[:xdigit:]]+)[[:space:]]*$[[:space:]]*.*' tools/perf/trace/beauty/sync_file_range.sh:regex='^[[:space:]]*#[[:space:]]*define[[:space:]]+SYNC_FILE_RANGE_([[:alnum:]_]+)[[:space:]]+([[:xdigit:]]+)[[:space:]]*.*' tools/perf/trace/beauty/usbdevfs_ioctl.sh:regex="^#[[:space:]]*define[[:space:]]+USBDEVFS_(\w+)($\w+$)?[[:space:]]+_IO[CWR]{0,2}\([[:space:]]*(_IOC_\w+,[[:space:]]*)?'U'[[:space:]]*,[[:space:]]*([[:digit:]]+).*" tools/perf/trace/beauty/usbdevfs_ioctl.sh:regex="^#[[:space:]]*define[[:space:]]+USBDEVFS_(\w+)[[:space:]]+_IO[WR]{0,2}\([[:space:]]*'U'[[:space:]]*,[[:space:]]*([[:digit:]]+).*" $ This silences this perf build warning: Warning: Kernel ABI header at 'tools/include/uapi/linux/fs.h' differs from latest version at 'include/uapi/linux/fs.h' diff -u tools/include/uapi/linux/fs.h include/uapi/linux/fs.h Cc: Adrian Hunter Cc: Eric Biggers Cc: Jiri Olsa Cc: Namhyung Kim Link: https://lkml.kernel.org/n/tip-44g48exl9br9ba0t64chqb4i@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

fs: Reserve flag for casefolding

2019-08-23T14:57:12+00:00

In preparation for including the casefold feature within f2fs, elevate the EXT4_CASEFOLD_FL flag to FS_CASEFOLD_FL. Signed-off-by: Daniel Rosenberg Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim

tools headers UAPI: Sync linux/fs.h with the kernel

2019-05-28T12:49:03+00:00

To pick up the changes in: c553ea4fdf27 ("fs/sync.c: sync_file_range(2) may use WB_SYNC_ALL writeback") That should be used to beautify the 'sync_file_range' syscall 'flags' arg. This silences this perf build warning: Warning: Kernel ABI header at 'tools/include/uapi/linux/fs.h' differs from latest version at 'include/uapi/linux/fs.h' diff -u tools/include/uapi/linux/fs.h include/uapi/linux/fs.h Cc: Adrian Hunter Cc: Amir Goldstein Cc: Brendan Gregg Cc: Jiri Olsa Cc: Linus Torvalds Cc: Luis Cláudio Gonçalves Cc: Namhyung Kim Link: https://lkml.kernel.org/n/tip-at3uoqcvmqdkwaysmvbj1wpv@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo