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fsnotify: Avoid -Wflex-array-member-not-at-end warning

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Use the `DEFINE_FLEX()` helper for an on-stack definition of a
flexible structure where the size of the flexible-array member
is known at compile-time, and refactor the rest of the code,
accordingly.

So, with these changes, fix the following warning:
fs/notify/fdinfo.c:45:36: warning: structure containing a flexible array member is not at the end of another structure [-Wflex-array-member-not-at-end]

Link: https://github.com/KSPP/linux/issues/202
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Jan Kara <jack@suse.cz>
Message-Id: <ZgImguNzJBiis9Mj@neat>
This commit is contained in:
Gustavo A. R. Silva 2024-03-25 19:36:02 -06:00 committed by Jan Kara
parent e659522446
commit 4d69c58ef2
1 changed files with 8 additions and 12 deletions
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20
fs/notify/fdinfo.c
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@ -41,29 +41,25 @@ static void show_fdinfo(struct seq_file *m, struct file *f,
#if defined(CONFIG_EXPORTFS)
static void show_mark_fhandle(struct seq_file *m, struct inode *inode)
{
struct {
struct file_handle handle;
u8 pad[MAX_HANDLE_SZ];
} f;
DEFINE_FLEX(struct file_handle, f, f_handle, handle_bytes, MAX_HANDLE_SZ);
int size, ret, i;
f.handle.handle_bytes = sizeof(f.pad);
size = f.handle.handle_bytes >> 2;
size = f->handle_bytes >> 2;
ret = exportfs_encode_fid(inode, (struct fid *)f.handle.f_handle, &size);
ret = exportfs_encode_fid(inode, (struct fid *)f->f_handle, &size);
if ((ret == FILEID_INVALID) || (ret < 0)) {
WARN_ONCE(1, "Can't encode file handler for inotify: %d\n", ret);
return;
}
f.handle.handle_type = ret;
f.handle.handle_bytes = size * sizeof(u32);
f->handle_type = ret;
f->handle_bytes = size * sizeof(u32);
seq_printf(m, "fhandle-bytes:%x fhandle-type:%x f_handle:",
f.handle.handle_bytes, f.handle.handle_type);
f->handle_bytes, f->handle_type);
for (i = 0; i < f.handle.handle_bytes; i++)
seq_printf(m, "%02x", (int)f.handle.f_handle[i]);
for (i = 0; i < f->handle_bytes; i++)
seq_printf(m, "%02x", (int)f->f_handle[i]);
}
#else
static void show_mark_fhandle(struct seq_file *m, struct inode *inode)