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authorLinus Torvalds <torvalds@linux-foundation.org>2012-01-07 06:03:02 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-01-07 06:03:02 +0400
commit6ed23fd6c08b3ffa17c1f841098d2fa2ab3a59dd (patch)
tree5cb5bb5dbefbb6458eff4bdae3c091ca3c02d685 /fs
parent5ee354a0295c34aa7da07be8490f86edee2c7883 (diff)
parent2174f6df7891fa331800beb72634c969f017900b (diff)
downloadlinux-6ed23fd6c08b3ffa17c1f841098d2fa2ab3a59dd.tar.xz
Merge branch 'pstore' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux
* 'pstore' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux: pstore: gracefully handle NULL pstore_info functions pstore: pass reason to backend write callback
Diffstat (limited to 'fs')
-rw-r--r--fs/pstore/inode.c3
-rw-r--r--fs/pstore/platform.c36
2 files changed, 6 insertions, 33 deletions
diff --git a/fs/pstore/inode.c b/fs/pstore/inode.c
index 379a02dc1217..b3b426edb2fd 100644
--- a/fs/pstore/inode.c
+++ b/fs/pstore/inode.c
@@ -80,7 +80,8 @@ static int pstore_unlink(struct inode *dir, struct dentry *dentry)
{
struct pstore_private *p = dentry->d_inode->i_private;
- p->psi->erase(p->type, p->id, p->psi);
+ if (p->psi->erase)
+ p->psi->erase(p->type, p->id, p->psi);
return simple_unlink(dir, dentry);
}
diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c
index 57bbf9078ac8..9ec22d3b4293 100644
--- a/fs/pstore/platform.c
+++ b/fs/pstore/platform.c
@@ -122,7 +122,7 @@ static void pstore_dump(struct kmsg_dumper *dumper,
memcpy(dst, s1 + s1_start, l1_cpy);
memcpy(dst + l1_cpy, s2 + s2_start, l2_cpy);
- ret = psinfo->write(PSTORE_TYPE_DMESG, &id, part,
+ ret = psinfo->write(PSTORE_TYPE_DMESG, reason, &id, part,
hsize + l1_cpy + l2_cpy, psinfo);
if (ret == 0 && reason == KMSG_DUMP_OOPS && pstore_is_mounted())
pstore_new_entry = 1;
@@ -207,8 +207,7 @@ void pstore_get_records(int quiet)
return;
mutex_lock(&psi->read_mutex);
- rc = psi->open(psi);
- if (rc)
+ if (psi->open && psi->open(psi))
goto out;
while ((size = psi->read(&id, &type, &time, &buf, psi)) > 0) {
@@ -219,7 +218,8 @@ void pstore_get_records(int quiet)
if (rc && (rc != -EEXIST || !quiet))
failed++;
}
- psi->close(psi);
+ if (psi->close)
+ psi->close(psi);
out:
mutex_unlock(&psi->read_mutex);
@@ -243,33 +243,5 @@ static void pstore_timefunc(unsigned long dummy)
mod_timer(&pstore_timer, jiffies + PSTORE_INTERVAL);
}
-/*
- * Call platform driver to write a record to the
- * persistent store.
- */
-int pstore_write(enum pstore_type_id type, char *buf, size_t size)
-{
- u64 id;
- int ret;
- unsigned long flags;
-
- if (!psinfo)
- return -ENODEV;
-
- if (size > psinfo->bufsize)
- return -EFBIG;
-
- spin_lock_irqsave(&psinfo->buf_lock, flags);
- memcpy(psinfo->buf, buf, size);
- 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);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(pstore_write);
-
module_param(backend, charp, 0444);
MODULE_PARM_DESC(backend, "Pstore backend to use");