diff options
| author | Daniel Rosenberg <drosen@google.com> | 2017-07-19 17:16:43 -0700 |
|---|---|---|
| committer | Moyster <oysterized@gmail.com> | 2017-07-21 12:18:56 +0200 |
| commit | dcb1bbdc06e817785382c17277b011194d266674 (patch) | |
| tree | 166233fdeaf77bbc195415cc067087467d4736be | |
| parent | 04f2202b1f46695f7e8412e823489c7ab10a40f7 (diff) | |
| download | android_kernel_m2note-dcb1bbdc06e817785382c17277b011194d266674.tar.gz | |
ANDROID: sdcardfs: Remove unnecessary lock
The mmap_sem lock does not appear to be protecting
anything, and has been removed in Samsung's more
recent versions of sdcardfs.
Signed-off-by: Daniel Rosenberg <drosen@google.com>
Change-Id: I76ff3e33002716b8384fc8be368028ed63dffe4e
Bug: 63785372
| -rwxr-xr-x | fs/sdcardfs/inode.c | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/fs/sdcardfs/inode.c b/fs/sdcardfs/inode.c index 6a452757a..d22aee3b3 100755 --- a/fs/sdcardfs/inode.c +++ b/fs/sdcardfs/inode.c @@ -779,13 +779,9 @@ static int sdcardfs_setattr(struct vfsmount *mnt, struct dentry *dentry, struct * afterwards in the other cases: we fsstack_copy_inode_size from * the lower level. */ - if (current->mm) - down_write(¤t->mm->mmap_sem); if (ia->ia_valid & ATTR_SIZE) { err = inode_newsize_ok(&tmp, ia->ia_size); if (err) { - if (current->mm) - up_write(¤t->mm->mmap_sem); goto out; } truncate_setsize(inode, ia->ia_size); @@ -808,8 +804,6 @@ static int sdcardfs_setattr(struct vfsmount *mnt, struct dentry *dentry, struct err = notify_change2(lower_mnt, lower_dentry, &lower_ia); /* note: lower_ia */ mutex_unlock(&lower_dentry->d_inode->i_mutex); - if (current->mm) - up_write(¤t->mm->mmap_sem); if (err) goto out; |