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[bug-patch] patch cannot handle >3 lines of context
From: |
Jörn Engel |
Subject: |
[bug-patch] patch cannot handle >3 lines of context |
Date: |
Fri, 17 Jul 2015 10:49:31 -0700 |
User-agent: |
Mutt/1.5.23 (2014-03-12) |
Noticed the problem trying to apply the hunk below. It applies just
fine with git, but fails to apply with GNU patch. Cutting the 7-line
context above the patch down to 3-line context fixes the issue. Cutting
it down to 5-line context makes it apply with fuzz 2.
The context matches the file to be patched and I believe the problem to
be generic. Actual patch only serves illustration.
---<snip>---
@@ -599,14 +600,20 @@ static void bcon_init_zero_bio(struct blockconsole *bc)
static int blockconsole_panic(struct notifier_block *this, unsigned long event,
void *ptr)
{
struct blockconsole *bc = container_of(this, struct blockconsole,
static int blockconsole_panic(struct notifier_block *this, unsigned long event,
void *ptr)
{
struct blockconsole *bc = container_of(this, struct blockconsole,
panic_block);
unsigned int n;
- n = SECTOR_SIZE - bcon_console_ofs(bc);
- if (n != SECTOR_SIZE)
- bcon_advance_console_bytes(bc, n);
- bcon_write_iteration(bc);
+ if (have_hardware_watchdog) {
+ /*
+ * Without a hardware watchdog, this has potential to
+ * hang the machine.
+ */
+ n = SECTOR_SIZE - bcon_console_ofs(bc);
+ if (n != SECTOR_SIZE)
+ bcon_advance_console_bytes(bc, n);
+ bcon_write_iteration(bc);
+ }
return NOTIFY_DONE;
}
---<snap>---
Jörn
--
Any headline which ends in a question mark can be answered by the word 'no'.
-- Betteridge's Law
- [bug-patch] patch cannot handle >3 lines of context,
Jörn Engel <=