On Wed, Nov 11, 2015 at 05:11:51PM -0300, Arnaldo Carvalho de Melo wrote:
> > struct btrfs_path {
...
> > u8 reada; /* 128 1 */
> > u8 lowest_level; /* 129 1 */
...
> > };
> [acme@zoo linux]$ pahole -C btrfs_path ../build/v4.3.0+/fs/btrfs/btrfs.o
> die__process_function: tag not supported 0x4109 (GNU_call_site)!
> struct btrfs_path {
> struct extent_buffer * nodes[8]; /* 0 64 */
> /* --- cacheline 1 boundary (64 bytes) --- */
> int slots[8]; /* 64 32 */
> int locks[8]; /* 96 32 */
> /* --- cacheline 2 boundary (128 bytes) --- */
> int reada; /* 128 4 */
> int lowest_level; /* 132 4 */
> unsigned int search_for_split:1; /* 136:31 4 */
> unsigned int keep_locks:1; /* 136:30 4 */
> unsigned int skip_locking:1; /* 136:29 4 */
> unsigned int leave_spinning:1; /* 136:28 4 */
> unsigned int search_commit_root:1; /* 136:27 4 */
> unsigned int need_commit_sem:1; /* 136:26 4 */
> unsigned int skip_release_on_error:1; /* 136:25 4 */
>
> /* size: 144, cachelines: 3, members: 12 */
> /* padding: 4 */
> /* bit_padding: 25 bits */
> /* last cacheline: 16 bytes */
> };
> [acme@zoo linux]$
>
> Ok, but then 'reada' and 'lowest_level' are both int in my file, lemme try
> converting it and rebuilding...
Yes, they're both 'int' in current git versions, I'm trying to reduce
size of the structure and using pahole to see the result. When both
members were switched to u8 the warning appeared. Sorry for confusion.
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