To pick the changes from: dd8b477f9a3d8edb ("mount: Support "nosymfollow" in new mount api") That ends up adding support for the new MOUNT_ATTR_NOSYMFOLLOW mount attribute: $ tools/perf/trace/beauty/fsmount.sh > before $ cp include/uapi/linux/mount.h tools/include/uapi/linux/mount.h $ tools/perf/trace/beauty/fsmount.sh > after $ diff -u before after --- before 2021-07-01 13:34:04.542517355 -0300 +++ after 2021-07-01 13:34:12.423694537 -0300 @@ -7,4 +7,5 @@ [ilog2(0x00000020) + 1] = "STRICTATIME", [ilog2(0x00000080) + 1] = "NODIRATIME", [ilog2(0x00100000) + 1] = "IDMAP", + [ilog2(0x00200000) + 1] = "NOSYMFOLLOW", }; $ So now one can use it in --filter expressions for tracepoints. This silences this perf build warnings: Warning: Kernel ABI header at 'tools/include/uapi/linux/mount.h' differs from latest version at 'include/uapi/linux/mount.h' diff -u tools/include/uapi/linux/mount.h include/uapi/linux/mount.h
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| @@ -120,6 +120,7 @@ enum fsconfig_command { · 119 unmodified lines | ||
| 120 | 120 | #define MOUNT_ATTR_STRICTATIME 0x00000020 /* - Always perform atime updates */ |
| 121 | 121 | #define MOUNT_ATTR_NODIRATIME 0x00000080 /* Do not update directory access times */ |
| 122 | 122 | #define MOUNT_ATTR_IDMAP 0x00100000 /* Idmap mount to @userns_fd in struct mount_attr. */ |
| 123 | +#define MOUNT_ATTR_NOSYMFOLLOW 0x00200000 /* Do not follow symlinks */ | |
| 123 | 124 | |
| 124 | 125 | /* |
| 125 | 126 | * mount_setattr() |