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authorHugh Dickins <hugh@veritas.com>2005-09-03 15:54:35 -0700
committerLinus Torvalds <torvalds@evo.osdl.org>2005-09-05 00:05:41 -0700
commit6eb396dc4a9781c5e7951143ab56ce5710687ab3 (patch)
tree48b165c8934a0f3852344725fee060740dcdfa48 /mm
parent53092a7402f227151a681b0c92ec8598c5618b1a (diff)
downloadlinux-sh-6eb396dc4a9781c5e7951143ab56ce5710687ab3.tar.gz
[PATCH] swap: swap unsigned int consistency
The swap header's unsigned int last_page determines the range of swap pages, but swap_info has been using int or unsigned long in some cases: use unsigned int throughout (except, in several places a local unsigned long is useful to avoid overflows when adding). Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Jens Axboe <axboe@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/swapfile.c19
1 files changed, 10 insertions, 9 deletions
diff --git a/mm/swapfile.c b/mm/swapfile.c
index d4da84ee3925..6cc6dfb4d27b 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -84,7 +84,7 @@ void swap_unplug_io_fn(struct backing_dev_info *unused_bdi, struct page *page)
up_read(&swap_unplug_sem);
}
-static inline int scan_swap_map(struct swap_info_struct *si)
+static inline unsigned long scan_swap_map(struct swap_info_struct *si)
{
unsigned long offset;
/*
@@ -531,10 +531,11 @@ static int unuse_mm(struct mm_struct *mm,
* Scan swap_map from current position to next entry still in use.
* Recycle to start on reaching the end, returning 0 when empty.
*/
-static int find_next_to_unuse(struct swap_info_struct *si, int prev)
+static unsigned int find_next_to_unuse(struct swap_info_struct *si,
+ unsigned int prev)
{
- int max = si->max;
- int i = prev;
+ unsigned int max = si->max;
+ unsigned int i = prev;
int count;
/*
@@ -577,7 +578,7 @@ static int try_to_unuse(unsigned int type)
unsigned short swcount;
struct page *page;
swp_entry_t entry;
- int i = 0;
+ unsigned int i = 0;
int retval = 0;
int reset_overflow = 0;
int shmem;
@@ -1216,7 +1217,7 @@ static int swap_show(struct seq_file *swap, void *v)
file = ptr->swap_file;
len = seq_path(swap, file->f_vfsmnt, file->f_dentry, " \t\n\\");
- seq_printf(swap, "%*s%s\t%d\t%ld\t%d\n",
+ seq_printf(swap, "%*s%s\t%u\t%u\t%d\n",
len < 40 ? 40 - len : 1, " ",
S_ISBLK(file->f_dentry->d_inode->i_mode) ?
"partition" : "file\t",
@@ -1275,8 +1276,8 @@ asmlinkage long sys_swapon(const char __user * specialfile, int swap_flags)
static int least_priority;
union swap_header *swap_header = NULL;
int swap_header_version;
- int nr_good_pages = 0;
- int nr_extents;
+ unsigned int nr_good_pages = 0;
+ int nr_extents = 0;
sector_t span;
unsigned long maxpages = 1;
int swapfilesize;
@@ -1509,7 +1510,7 @@ asmlinkage long sys_swapon(const char __user * specialfile, int swap_flags)
nr_swap_pages += nr_good_pages;
total_swap_pages += nr_good_pages;
- printk(KERN_INFO "Adding %dk swap on %s. "
+ printk(KERN_INFO "Adding %uk swap on %s. "
"Priority:%d extents:%d across:%lluk\n",
nr_good_pages<<(PAGE_SHIFT-10), name, p->prio,
nr_extents, (unsigned long long)span<<(PAGE_SHIFT-10));