Commit 2346b966 authored by Mehdi Ben Hadj Khelifa's avatar Mehdi Ben Hadj Khelifa Committed by David Sterba
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btrfs: refactor allocation size calculation in alloc_btrfs_io_context() 



Use struct_size() to replace the open-coded calculation, remove the
comment as use of the helper is self explanatory.

Reviewed-by: default avatarQu Wenruo <wqu@suse.com>
Signed-off-by: default avatarMehdi Ben Hadj Khelifa <mehdi.benhadjkhelifa@gmail.com>
Reviewed-by: default avatarDavid Sterba <dsterba@suse.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent aebe2bb0

fs/btrfs/volumes.c

+1 −6
Original line number Diff line number Diff line
@@ -6076,12 +6076,7 @@ struct btrfs_io_context *alloc_btrfs_io_context(struct btrfs_fs_info *fs_info, 
{

	struct btrfs_io_context *bioc;



	bioc = kzalloc(

		 /* The size of btrfs_io_context */

		sizeof(struct btrfs_io_context) +

		/* Plus the variable array for the stripes */

		sizeof(struct btrfs_io_stripe) * (total_stripes),

		GFP_NOFS);

	bioc = kzalloc(struct_size(bioc, stripes, total_stripes), GFP_NOFS);



	if (!bioc)

		return NULL;