On Wed, Oct 23, 2013 at 4:55 PM, Madper Xie <c...@redhat.com> wrote:
> pstore try to find duplicate entries by check both ID, type and psi.
> They are not really enough for efi backend. dumped vars always have
> the same type, psi and ID. like follows:
> dump-type0-9-1-1382511508-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
> dump-type0-9-1-1382515661-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
>
> The "duplicate" entries won't appear in pstorefs. And a complain will be
> print -- pstore: failed to load 76 record(s) from 'efi'
> So I add one more check: timespec.
>
> Signed-off-by: Madper Xie <c...@redhat.com>
> ---
> fs/pstore/inode.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/fs/pstore/inode.c b/fs/pstore/inode.c
> index 1282384..f70f1e5 100644
> --- a/fs/pstore/inode.c
> +++ b/fs/pstore/inode.c
> @@ -47,6 +47,7 @@ static LIST_HEAD(allpstore);
> struct pstore_private {
> struct list_head list;
> struct pstore_info *psi;
> + struct timespec time;
> enum pstore_type_id type;
> u64 id;
> int count;
> @@ -290,7 +291,8 @@ int pstore_mkfile(enum pstore_type_id type, char *psname,
> u64 id, int count,
> list_for_each_entry(pos, &allpstore, list) {
> if (pos->type == type &&
> pos->id == id &&
> - pos->psi == psi) {
> + pos->psi == psi &&
> + !timespec_compare(&pos->time, &time)) {
> rc = -EEXIST;
> break;
> }
> @@ -312,6 +314,7 @@ int pstore_mkfile(enum pstore_type_id type, char *psname,
> u64 id, int count,
> private->id = id;
> private->count = count;
> private->psi = psi;
> + memcpy(&private->time, &time, sizeof(struct timespec));
>
> switch (type) {
> case PSTORE_TYPE_DMESG:
As discussed on IRC, why don't you compare the variable names?
--
Thanks,
//richard
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