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| author |   Andrei Vagin <avagin@google.com> | 2023-12-13 22:44:38 -0800 |
|---|---|---|
| committer |   Christian Brauner <brauner@kernel.org> | 2023-12-21 13:17:54 +0100 |
| commit | 3efdc78fdc21ab82694707eb234ab93f28d13ba8 (patch) | |
| tree | c8d8474c4044416931c05db19283882fe6544e9c /tools/testing/selftests/Makefile | |
| parent | eventfd: Remove usage of the deprecated ida_simple_xx() API (diff) | |
| download | wireguard-linux-3efdc78fdc21ab82694707eb234ab93f28d13ba8.tar.xz wireguard-linux-3efdc78fdc21ab82694707eb234ab93f28d13ba8.zip | |
fs/proc: show correct device and inode numbers in /proc/pid/maps
/proc/pid/maps shows device and inode numbers of vma->vm_file-s. Here is
an issue. If a mapped file is on a stackable file system (e.g.,
overlayfs), vma->vm_file is a backing file whose f_inode is on the
underlying filesystem. To show correct numbers, we need to get a user
file and shows its numbers. The same trick is used to show file paths in
/proc/pid/maps.
Cc: Alexander Mikhalitsyn <alexander@mihalicyn.com>
Suggested-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Andrei Vagin <avagin@google.com>
Link: https://lore.kernel.org/r/20231214064439.1023011-1-avagin@google.com
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'tools/testing/selftests/Makefile')
0 files changed, 0 insertions, 0 deletions