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pstore: Don't allow high traffic options on fragile devices

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Some pstore backing devices use on board flash as persistent
storage. These have limited numbers of write cycles so it
is a poor idea to use them from high frequency operations.

Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Luck, Tony
2013-12-18 15:17:10 -08:00
committed by Linus Torvalds
parent eaadcfeb31
commit df36ac1bc2
4 changed files with 10 additions and 2 deletions
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7
fs/pstore/platform.c
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@@ -443,8 +443,11 @@ int pstore_register(struct pstore_info *psi)
pstore_get_records(0);
kmsg_dump_register(&pstore_dumper);
pstore_register_console();
pstore_register_ftrace();
if ((psi->flags & PSTORE_FLAGS_FRAGILE) == 0) {
pstore_register_console();
pstore_register_ftrace();
}
if (pstore_update_ms >= 0) {
pstore_timer.expires = jiffies +