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| author | Hugh Dickins <hugh@veritas.com> | 2009-01-06 14:39:47 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-01-06 15:59:05 -0800 |
| commit | 73fd8748ab0b9b3ddd178bea1d7ae03372033d96 (patch) | |
| tree | 6c0173c84ff6ace213578a9a8b03fd73e23ec8ad | |
| parent | 69beeb1d3428424fbc7546f85e5cd7ac4119c09d (diff) | |
| download | op-kernel-dev-73fd8748ab0b9b3ddd178bea1d7ae03372033d96.zip op-kernel-dev-73fd8748ab0b9b3ddd178bea1d7ae03372033d96.tar.gz | |
swapfile: swapon needs larger size type
sys_swapon()'s swapfilesize (better renamed swapfilepages) is declared as
an int, but should be an unsigned long like the maxpages it's compared
against: on 64-bit (with 4kB pages) a swapfile of 2^44 bytes was rejected
with "Swap area shorter than signature indicates".
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | mm/swapfile.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/mm/swapfile.c b/mm/swapfile.c index 725e56c..e2adc8e 100644 --- a/mm/swapfile.c +++ b/mm/swapfile.c @@ -1461,7 +1461,7 @@ asmlinkage long sys_swapon(const char __user * specialfile, int swap_flags) int nr_extents = 0; sector_t span; unsigned long maxpages = 1; - int swapfilesize; + unsigned long swapfilepages; unsigned short *swap_map = NULL; struct page *page = NULL; struct inode *inode = NULL; @@ -1539,7 +1539,7 @@ asmlinkage long sys_swapon(const char __user * specialfile, int swap_flags) goto bad_swap; } - swapfilesize = i_size_read(inode) >> PAGE_SHIFT; + swapfilepages = i_size_read(inode) >> PAGE_SHIFT; /* * Read the swap header. @@ -1616,7 +1616,7 @@ asmlinkage long sys_swapon(const char __user * specialfile, int swap_flags) error = -EINVAL; if (!maxpages) goto bad_swap; - if (swapfilesize && maxpages > swapfilesize) { + if (swapfilepages && maxpages > swapfilepages) { printk(KERN_WARNING "Swap area shorter than signature indicates\n"); goto bad_swap; |
