diff options
| author | Amir Goldstein <amir73il@gmail.com> | 2023-10-09 18:37:11 +0300 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2023-10-19 12:03:15 +0300 |
| commit | 08582d678fcf11fc86188f0b92239d3d49667d8e (patch) | |
| tree | c4cc4f56b752f97a3eb90f2886904b49d72028c9 /fs/proc/task_mmu.c | |
| parent | 83bc1d294130cc471a89ce10770daa281a93fcb0 (diff) | |
| download | linux-08582d678fcf11fc86188f0b92239d3d49667d8e.tar.xz | |
fs: create helper file_user_path() for user displayed mapped file path
Overlayfs uses backing files with "fake" overlayfs f_path and "real"
underlying f_inode, in order to use underlying inode aops for mapped
files and to display the overlayfs path in /proc/<pid>/maps.
In preparation for storing the overlayfs "fake" path instead of the
underlying "real" path in struct backing_file, define a noop helper
file_user_path() that returns f_path for now.
Use the new helper in procfs and kernel logs whenever a path of a
mapped file is displayed to users.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Link: https://lore.kernel.org/r/20231009153712.1566422-3-amir73il@gmail.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'fs/proc/task_mmu.c')
| -rw-r--r-- | fs/proc/task_mmu.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index 3dd5be96691b..1593940ca01e 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -296,7 +296,7 @@ show_map_vma(struct seq_file *m, struct vm_area_struct *vma) if (anon_name) seq_printf(m, "[anon_shmem:%s]", anon_name->name); else - seq_file_path(m, file, "\n"); + seq_path(m, file_user_path(file), "\n"); goto done; } @@ -1967,7 +1967,7 @@ static int show_numa_map(struct seq_file *m, void *v) if (file) { seq_puts(m, " file="); - seq_file_path(m, file, "\n\t= "); + seq_path(m, file_user_path(file), "\n\t= "); } else if (vma_is_initial_heap(vma)) { seq_puts(m, " heap"); } else if (vma_is_initial_stack(vma)) { |