diff options
| author |   Chen Gong <gong.chen@linux.intel.com> | 2011-10-12 09:17:24 -0700 |
|---|---|---|
| committer |   Tony Luck <tony.luck@intel.com> | 2011-10-12 09:17:24 -0700 |
| commit | b238b8fa93353ab50c9a2b1e2fa47a0ab01c37cd (patch) | |
| tree | a46a6ce7567d9826ae48c2f3dc5aa0167de1f26c /fs/pstore | |
| parent | pstore: change mutex locking to spin_locks (diff) | |
| download | linux-dev-b238b8fa93353ab50c9a2b1e2fa47a0ab01c37cd.tar.xz linux-dev-b238b8fa93353ab50c9a2b1e2fa47a0ab01c37cd.zip | |
pstore: make pstore write function return normal success/fail value
Currently pstore write interface employs record id as return
value, but it is not enough because it can't tell caller if
the write operation is successful. Pass the record id back via
an argument pointer and return zero for success, non-zero for
failure.
Signed-off-by: Chen Gong <gong.chen@linux.intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'fs/pstore')
| -rw-r--r-- | fs/pstore/platform.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c index 0472924024cc..2bd620f0d796 100644 --- a/fs/pstore/platform.c +++ b/fs/pstore/platform.c @@ -87,7 +87,7 @@ static void pstore_dump(struct kmsg_dumper *dumper, unsigned long size, total = 0; char *dst, *why; u64 id; - int hsize; + int hsize, ret; unsigned int part = 1; unsigned long flags = 0; int is_locked = 0; @@ -122,9 +122,9 @@ static void pstore_dump(struct kmsg_dumper *dumper, memcpy(dst, s1 + s1_start, l1_cpy); memcpy(dst + l1_cpy, s2 + s2_start, l2_cpy); - id = psinfo->write(PSTORE_TYPE_DMESG, part, + ret = psinfo->write(PSTORE_TYPE_DMESG, &id, part, hsize + l1_cpy + l2_cpy, psinfo); - if (reason == KMSG_DUMP_OOPS && pstore_is_mounted()) + if (ret == 0 && reason == KMSG_DUMP_OOPS && pstore_is_mounted()) pstore_new_entry = 1; l1 -= l1_cpy; l2 -= l2_cpy; @@ -247,6 +247,7 @@ static void pstore_timefunc(unsigned long dummy) int pstore_write(enum pstore_type_id type, char *buf, size_t size) { u64 id; + int ret; unsigned long flags; if (!psinfo) @@ -257,8 +258,8 @@ int pstore_write(enum pstore_type_id type, char *buf, size_t size) spin_lock_irqsave(&psinfo->buf_lock, flags); memcpy(psinfo->buf, buf, size); - id = psinfo->write(type, 0, size, psinfo); - if (pstore_is_mounted()) + ret = psinfo->write(type, &id, 0, size, psinfo); + if (ret == 0 && pstore_is_mounted()) pstore_mkfile(PSTORE_TYPE_DMESG, psinfo->name, id, psinfo->buf, size, CURRENT_TIME, psinfo); spin_unlock_irqrestore(&psinfo->buf_lock, flags); |