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| author |   liuhailong <liuhailong@oppo.com> | 2021-06-18 17:50:35 +0800 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-06-18 13:02:40 +0200 |
| commit | 594ea7358b051d4638fb587e0234a8a038f47e3d (patch) | |
| tree | 4a3fda3fdc18a9a7eb38fd65c580c84b613c10b5 /drivers/staging/android/ashmem.c | |
| parent | Merge tag 'iio-for-5.14b' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next (diff) | |
| download | linux-dev-594ea7358b051d4638fb587e0234a8a038f47e3d.tar.xz linux-dev-594ea7358b051d4638fb587e0234a8a038f47e3d.zip | |
staging: android: ashmem: add size field in procfs fdinfo
add this information to help user to find ashmem problem.
ashmem leak scenario:
-000|fd = ashmem_create_region
-001|mmap and pagefault
-002|munmap
-003|forget close(fd) <---- which lead to ashmem leak
Signed-off-by: liuhailong <liuhailong@oppo.com>
收件人: 刘海龙(DuckBuBee) <liuhailong@oppo.com>
Link: https://lore.kernel.org/r/20210618095035.32410-1-liuhailong@oppo.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/android/ashmem.c')
| -rw-r--r-- | drivers/staging/android/ashmem.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/staging/android/ashmem.c b/drivers/staging/android/ashmem.c index 8ee4320a5dc6..ddbde3f8430e 100644 --- a/drivers/staging/android/ashmem.c +++ b/drivers/staging/android/ashmem.c @@ -895,6 +895,8 @@ static void ashmem_show_fdinfo(struct seq_file *m, struct file *file) seq_printf(m, "name:\t%s\n", asma->name + ASHMEM_NAME_PREFIX_LEN); + seq_printf(m, "size:\t%zu\n", asma->size); + mutex_unlock(&ashmem_mutex); } #endif |