Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [ 06/19] ext4: fixup 64-bit divides in 3.0-stable backport of upstream fix | Date | Wed, 10 Apr 2013 15:50:29 -0700 |
| |
3.0-stable review patch. If anyone has any objections, please let me know.
------------------
From: Todd Poynor <toddpoynor@google.com>
Replace C division operators with div64_u64 for divides introduced in: commit 503f4bdcc078e7abee273a85ce322de81b18a224 ext4: use atomic64_t for the per-flexbg free_clusters count
Specific to the 3.0-stable backport of the upstream patch.
Signed-off-by: Todd Poynor <toddpoynor@google.com> Reviewed-by: "Theodore Ts'o" <tytso@mit.edu> Cc: Christoph Biedl <linux-kernel.bfrz@manchmal.in-ulm.de> Cc: Lukas Czerner <lczerner@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- fs/ext4/ialloc.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
--- a/fs/ext4/ialloc.c +++ b/fs/ext4/ialloc.c @@ -22,6 +22,7 @@ #include <linux/random.h> #include <linux/bitops.h> #include <linux/blkdev.h> +#include <linux/math64.h> #include <asm/byteorder.h> #include "ext4.h" @@ -356,7 +357,7 @@ static int find_group_flex(struct super_ find_close_to_parent: flexbg_free_blocks = atomic64_read(&flex_group[best_flex].free_blocks); - flex_freeb_ratio = flexbg_free_blocks * 100 / blocks_per_flex; + flex_freeb_ratio = div64_u64(flexbg_free_blocks * 100, blocks_per_flex); if (atomic_read(&flex_group[best_flex].free_inodes) && flex_freeb_ratio > free_block_ratio) goto found_flexbg; @@ -371,7 +372,7 @@ find_close_to_parent: continue; flexbg_free_blocks = atomic64_read(&flex_group[i].free_blocks); - flex_freeb_ratio = flexbg_free_blocks * 100 / blocks_per_flex; + flex_freeb_ratio = div64_u64(flexbg_free_blocks * 100, blocks_per_flex); if (flex_freeb_ratio > free_block_ratio && (atomic_read(&flex_group[i].free_inodes))) {
| |