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| author | David Rientjes <rientjes@google.com> | 2015-04-14 15:48:21 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-04-14 16:49:06 -0700 |
| commit | 11d83360452ea2a95e699da01f8e1bcc4676a5de (patch) | |
| tree | 22d85ebbc47a9152cafc9373a8300d0abf92106b /fs | |
| parent | 2415b9f5cb048a803b30b790af994ba71ff0bd4c (diff) | |
| download | linux-stable-11d83360452ea2a95e699da01f8e1bcc4676a5de.tar.gz linux-stable-11d83360452ea2a95e699da01f8e1bcc4676a5de.tar.bz2 linux-stable-11d83360452ea2a95e699da01f8e1bcc4676a5de.zip | |
mm, mempool: do not allow atomic resizing
Allocating a large number of elements in atomic context could quickly
deplete memory reserves, so just disallow atomic resizing entirely.
Nothing currently uses mempool_resize() with anything other than
GFP_KERNEL, so convert existing callers to drop the gfp_mask.
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: David Rientjes <rientjes@google.com>
Acked-by: Steffen Maier <maier@linux.vnet.ibm.com> [zfcp]
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Steve French <sfrench@samba.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/cifs/connect.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 480cf9c81d50..f3bfe08e177b 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -773,8 +773,7 @@ static void clean_demultiplex_info(struct TCP_Server_Info *server) length = atomic_dec_return(&tcpSesAllocCount); if (length > 0) - mempool_resize(cifs_req_poolp, length + cifs_min_rcv, - GFP_KERNEL); + mempool_resize(cifs_req_poolp, length + cifs_min_rcv); } static int @@ -848,8 +847,7 @@ cifs_demultiplex_thread(void *p) length = atomic_inc_return(&tcpSesAllocCount); if (length > 1) - mempool_resize(cifs_req_poolp, length + cifs_min_rcv, - GFP_KERNEL); + mempool_resize(cifs_req_poolp, length + cifs_min_rcv); set_freezable(); while (server->tcpStatus != CifsExiting) { |