diff options
Diffstat (limited to 'arch/m68k/atari/stram.c')
| -rw-r--r-- | arch/m68k/atari/stram.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/arch/m68k/atari/stram.c b/arch/m68k/atari/stram.c index eabc6bc9c..471e9a85f 100644 --- a/arch/m68k/atari/stram.c +++ b/arch/m68k/atari/stram.c @@ -649,6 +649,7 @@ static int __init swap_init(unsigned long start_mem, unsigned long swap_data) /* now swapping to this device ok */ p->pages = j + k; + swap_list_lock(); nr_swap_pages += j; p->flags = SWP_WRITEOK; @@ -666,6 +667,7 @@ static int __init swap_init(unsigned long start_mem, unsigned long swap_data) } else { swap_info[prev].next = p - swap_info; } + swap_list_unlock(); printk( KERN_INFO "Using %dk (%d pages) of ST-RAM as swap space.\n", p->pages << 2, p->pages ); @@ -924,6 +926,9 @@ static int unswap_by_read(unsigned short *map, unsigned long max, DPRINTK("unswap: map[i=%lu]=%u nr_swap=%u\n", i, map[i], nr_swap_pages); + swap_device_lock(stram_swap_info); + map[i]++; + swap_device_unlock(stram_swap_info); /* Get a page for the entry, using the existing swap cache page if there is one. Otherwise, get a clean page and read the swap into it. */ @@ -945,18 +950,24 @@ static int unswap_by_read(unsigned short *map, unsigned long max, stat_swap_force++; #endif } - else if (map[i]) + else { + swap_free(entry); return -ENOMEM; + } } DPRINTK( "unswap: map[i=%lu]=%u nr_swap=%u\n", i, map[i], nr_swap_pages ); + swap_list_lock(); + swap_device_lock(stram_swap_info); map[i] = SWAP_MAP_BAD; if (stram_swap_info->lowest_bit == i) stram_swap_info->lowest_bit++; if (stram_swap_info->highest_bit == i) stram_swap_info->highest_bit--; --nr_swap_pages; + swap_device_unlock(stram_swap_info); + swap_list_unlock(); } return 0; @@ -1022,6 +1033,8 @@ static void free_stram_region( unsigned long offset, unsigned long n_pages ) return; } + swap_list_lock(); + swap_device_lock(stram_swap_info); /* un-reserve the freed pages */ for( ; n_pages > 0; ++offset, --n_pages ) { if (map[offset] != SWAP_MAP_BAD) @@ -1038,6 +1051,8 @@ static void free_stram_region( unsigned long offset, unsigned long n_pages ) if (stram_swap_info->prio > swap_info[swap_list.next].prio) swap_list.next = swap_list.head; nr_swap_pages += n_pages; + swap_device_unlock(stram_swap_info); + swap_list_unlock(); } |