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| author |   Alexey Dobriyan <adobriyan@gmail.com> | 2018-04-10 16:32:05 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2018-04-11 10:28:34 -0700 |
| commit | fe079a5e102cc59b6c2b66a41e39c624ce284519 (patch) | |
| tree | 47c8adfe4c4afbeb8daaae9a04e80182a8f9f1e8 /fs/proc/base.c | |
| parent | proc: faster /proc/cmdline (diff) | |
| download | linux-dev-fe079a5e102cc59b6c2b66a41e39c624ce284519.tar.xz linux-dev-fe079a5e102cc59b6c2b66a41e39c624ce284519.zip | |
proc: do mmput ASAP for /proc/*/map_files
mm_struct is not needed while printing as all the data was already
extracted.
Link: http://lkml.kernel.org/r/20180309223120.GC3843@avx2
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/proc/base.c')
| -rw-r--r-- | fs/proc/base.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c index d413a138dc30..eafa39a3a88c 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -2211,6 +2211,7 @@ proc_map_files_readdir(struct file *file, struct dir_context *ctx) } } up_read(&mm->mmap_sem); + mmput(mm); for (i = 0; i < nr_files; i++) { char buf[4 * sizeof(long) + 2]; /* max: %lx-%lx\0 */ @@ -2228,7 +2229,6 @@ proc_map_files_readdir(struct file *file, struct dir_context *ctx) } if (fa) flex_array_free(fa); - mmput(mm); out_put_task: put_task_struct(task); |