| From | Andi Kleen <> | Subject | [PATCH] [91/223] md: fix return value of rdev_size_change() | Date | Mon, 13 Dec 2010 00:46:30 +0100 (CET) |
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2.6.35-longterm review patch. If anyone has any objections, please let me know.
------------------ From: Justin Maggard <jmaggard10@gmail.com>
commit c26a44ed1e552aaa1d4ceb71842002d235fe98d7 upstream.
When trying to grow an array by enlarging component devices, rdev_size_store() expects the return value of rdev_size_change() to be in sectors, but the actual value is returned in KBs.
This functionality was broken by commit dd8ac336c13fd8afdb082ebacb1cddd5cf727889 so this patch is suitable for any kernel since 2.6.30.
Signed-off-by: Justin Maggard <jmaggard10@gmail.com> Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Andi Kleen <ak@linux.intel.com>
--- drivers/md/md.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
Index: linux/drivers/md/md.c =================================================================== --- linux.orig/drivers/md/md.c +++ linux/drivers/md/md.c @@ -1278,7 +1278,7 @@ super_90_rdev_size_change(mdk_rdev_t *rd md_super_write(rdev->mddev, rdev, rdev->sb_start, rdev->sb_size, rdev->sb_page); md_super_wait(rdev->mddev); - return num_sectors / 2; /* kB for sysfs */ + return num_sectors; } @@ -1644,7 +1644,7 @@ super_1_rdev_size_change(mdk_rdev_t *rde md_super_write(rdev->mddev, rdev, rdev->sb_start, rdev->sb_size, rdev->sb_page); md_super_wait(rdev->mddev); - return num_sectors / 2; /* kB for sysfs */ + return num_sectors; } static struct super_type super_types[] = {
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