The patch titled sys_swapon: simplify error flow in read_swap_header() has been added to the -mm tree. Its filename is sys_swapon-simplify-error-flow-in-read_swap_header.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find out what to do about this The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: sys_swapon: simplify error flow in read_swap_header() From: Cesar Eduardo Barros <cesarb@xxxxxxxxxx> Since there is no cleanup to do, there is no reason to jump to a label. Return directly instead. Signed-off-by: Cesar Eduardo Barros <cesarb@xxxxxxxxxx> Tested-by: Eric B Munson <emunson@xxxxxxxxx> Acked-by: Eric B Munson <emunson@xxxxxxxxx> Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> Cc: Hugh Dickins <hughd@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/swapfile.c | 15 ++++++--------- 1 file changed, 6 insertions(+), 9 deletions(-) diff -puN mm/swapfile.c~sys_swapon-simplify-error-flow-in-read_swap_header mm/swapfile.c --- a/mm/swapfile.c~sys_swapon-simplify-error-flow-in-read_swap_header +++ a/mm/swapfile.c @@ -1928,7 +1928,7 @@ static unsigned long read_swap_header(st if (memcmp("SWAPSPACE2", swap_header->magic.magic, 10)) { printk(KERN_ERR "Unable to find swap-space signature\n"); - goto bad_swap; + return 0; } /* swap partition endianess hack... */ @@ -1944,7 +1944,7 @@ static unsigned long read_swap_header(st printk(KERN_WARNING "Unable to handle swap header version %d\n", swap_header->info.version); - goto bad_swap; + return 0; } p->lowest_bit = 1; @@ -1976,22 +1976,19 @@ static unsigned long read_swap_header(st p->highest_bit = maxpages - 1; if (!maxpages) - goto bad_swap; + return 0; swapfilepages = i_size_read(inode) >> PAGE_SHIFT; if (swapfilepages && maxpages > swapfilepages) { printk(KERN_WARNING "Swap area shorter than signature indicates\n"); - goto bad_swap; + return 0; } if (swap_header->info.nr_badpages && S_ISREG(inode->i_mode)) - goto bad_swap; + return 0; if (swap_header->info.nr_badpages > MAX_SWAP_BADPAGES) - goto bad_swap; + return 0; return maxpages; - -bad_swap: - return 0; } SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags) _ Patches currently in -mm which might be from cesarb@xxxxxxxxxx are sys_swapon-use-vzalloc-instead-of-vmalloc-memset.patch sys_swapon-remove-changelog-from-function-comment.patch sys_swapon-do-not-depend-on-type-after-allocation.patch sys_swapon-separate-swap_info-allocation.patch sys_swapon-simplify-error-return-from-swap_info-allocation.patch sys_swapon-simplify-error-flow-in-alloc_swap_info.patch sys_swapon-remove-initial-value-of-name-variable.patch sys_swapon-move-setting-of-error-nearer-use.patch sys_swapon-remove-did_down-variable.patch sys_swapon-remove-bdev-variable.patch sys_swapon-do-only-cleanup-in-the-cleanup-blocks.patch sys_swapon-use-a-single-error-label.patch sys_swapon-separate-bdev-claim-and-inode-lock.patch sys_swapon-simplify-error-flow-in-claim_swapfile.patch sys_swapon-move-setting-of-swapfilepages-near-use.patch sys_swapon-separate-parsing-of-swapfile-header.patch sys_swapon-simplify-error-flow-in-read_swap_header.patch sys_swapon-call-swap_cgroup_swapon-earlier.patch sys_swapon-separate-parsing-of-bad-blocks-and-extents.patch sys_swapon-simplify-error-flow-in-setup_swap_map_and_extents.patch sys_swapon-remove-nr_good_pages-variable.patch sys_swapon-move-printk-outside-lock.patch sys_swapoff-change-order-to-match-sys_swapon.patch sys_swapon-separate-final-enabling-of-the-swapfile.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html