From fdc85222d58eb6e19ac11181024ac766b19dc470 Mon Sep 17 00:00:00 2001 From: Daniel Xu Date: Thu, 12 Mar 2020 13:03:14 -0700 Subject: kernfs: kvmalloc xattr value instead of kmalloc xattr values have a 64k maximum size. This can result in an order 4 kmalloc request which can be difficult to fulfill. Since xattrs do not need physically contiguous memory, we can switch to kvmalloc and not have to worry about higher order allocations failing. Signed-off-by: Daniel Xu Acked-by: Chris Down Reviewed-by: Andreas Dilger Reviewed-by: Greg Kroah-Hartman Signed-off-by: Tejun Heo --- fs/xattr.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'fs/xattr.c') diff --git a/fs/xattr.c b/fs/xattr.c index 90dd78f0eb27..0d3c9b4d1914 100644 --- a/fs/xattr.c +++ b/fs/xattr.c @@ -817,7 +817,7 @@ struct simple_xattr *simple_xattr_alloc(const void *value, size_t size) if (len < sizeof(*new_xattr)) return NULL; - new_xattr = kmalloc(len, GFP_KERNEL); + new_xattr = kvmalloc(len, GFP_KERNEL); if (!new_xattr) return NULL; @@ -882,7 +882,7 @@ int simple_xattr_set(struct simple_xattrs *xattrs, const char *name, new_xattr->name = kstrdup(name, GFP_KERNEL); if (!new_xattr->name) { - kfree(new_xattr); + kvfree(new_xattr); return -ENOMEM; } } @@ -912,7 +912,7 @@ out: spin_unlock(&xattrs->lock); if (xattr) { kfree(xattr->name); - kfree(xattr); + kvfree(xattr); } return err; -- cgit v1.2.3