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| author | Vasily Averin <vvs@virtuozzo.com> | 2021-07-19 13:44:56 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-07-20 06:00:38 -0700 |
| commit | 2c6ad20b581e37d6331010ee1d28b3307c90ba0a (patch) | |
| tree | 0fb3b7875cbcb3fdf333b7ac6470d97d8387e2c9 /net/core/scm.c | |
| parent | 1b51d8271973e4966078f0c1a5cb061ae9a424d2 (diff) | |
| download | linux-2c6ad20b581e37d6331010ee1d28b3307c90ba0a.tar.bz2 | |
memcg: enable accounting for scm_fp_list objects
unix sockets allows to send file descriptors via SCM_RIGHTS type messages.
Each such send call forces kernel to allocate up to 2Kb memory for
struct scm_fp_list.
It makes sense to account for them to restrict the host's memory
consumption from inside the memcg-limited container.
Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/scm.c')
| -rw-r--r-- | net/core/scm.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/core/scm.c b/net/core/scm.c index ae3085d9aae8..5c356f0dee30 100644 --- a/net/core/scm.c +++ b/net/core/scm.c @@ -79,7 +79,7 @@ static int scm_fp_copy(struct cmsghdr *cmsg, struct scm_fp_list **fplp) if (!fpl) { - fpl = kmalloc(sizeof(struct scm_fp_list), GFP_KERNEL); + fpl = kmalloc(sizeof(struct scm_fp_list), GFP_KERNEL_ACCOUNT); if (!fpl) return -ENOMEM; *fplp = fpl; @@ -355,7 +355,7 @@ struct scm_fp_list *scm_fp_dup(struct scm_fp_list *fpl) return NULL; new_fpl = kmemdup(fpl, offsetof(struct scm_fp_list, fp[fpl->count]), - GFP_KERNEL); + GFP_KERNEL_ACCOUNT); if (new_fpl) { for (i = 0; i < fpl->count; i++) get_file(fpl->fp[i]); |