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-rw-r--r--ipc/mqueue.c4
-rw-r--r--ipc/shm.c9
2 files changed, 9 insertions, 4 deletions
diff --git a/ipc/mqueue.c b/ipc/mqueue.c
index 781c1399c6a3..ade739f67f1d 100644
--- a/ipc/mqueue.c
+++ b/ipc/mqueue.c
@@ -307,8 +307,8 @@ static int mqueue_fill_super(struct super_block *sb, void *data, int silent)
struct inode *inode;
struct ipc_namespace *ns = data;
- sb->s_blocksize = PAGE_CACHE_SIZE;
- sb->s_blocksize_bits = PAGE_CACHE_SHIFT;
+ sb->s_blocksize = PAGE_SIZE;
+ sb->s_blocksize_bits = PAGE_SHIFT;
sb->s_magic = MQUEUE_MAGIC;
sb->s_op = &mqueue_super_ops;
diff --git a/ipc/shm.c b/ipc/shm.c
index 331fc1b0b3c7..13282510bc0d 100644
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -1200,7 +1200,11 @@ long do_shmat(int shmid, char __user *shmaddr, int shmflg, ulong *raddr,
if (err)
goto out_fput;
- down_write(&current->mm->mmap_sem);
+ if (down_write_killable(&current->mm->mmap_sem)) {
+ err = -EINTR;
+ goto out_fput;
+ }
+
if (addr && !(shmflg & SHM_REMAP)) {
err = -EINVAL;
if (addr + size < addr)
@@ -1271,7 +1275,8 @@ SYSCALL_DEFINE1(shmdt, char __user *, shmaddr)
if (addr & ~PAGE_MASK)
return retval;
- down_write(&mm->mmap_sem);
+ if (down_write_killable(&mm->mmap_sem))
+ return -EINTR;
/*
* This function tries to be smart and unmap shm segments that
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