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authorAlex Shi <alex.shi@linaro.org>2017-05-31 12:02:46 +0800
committerAlex Shi <alex.shi@linaro.org>2017-05-31 12:02:46 +0800
commitdc06d1ba220ca16ebbca598bb45242ec5e818cb2 (patch)
treeef66bd14901ec3a07cf65842a3b63884a64be529 /fs/ext4/mballoc.c
parent018ed21cf3b7cb618c63294793d63b23ce4afe24 (diff)
parenta898540914d4136f29bc738ce593c1c501006f23 (diff)
Merge branch 'linux-linaro-lsk-v4.1' into linux-linaro-lsk-v4.1-androidlsk-v4.1-17.06-androidlsk-v4.1-17.05-androidlinux-linaro-lsk-v4.1-android
Diffstat (limited to 'fs/ext4/mballoc.c')
-rw-r--r--fs/ext4/mballoc.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index d681245212c9..a7fbde5ab2b2 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -3097,6 +3097,13 @@ ext4_mb_normalize_request(struct ext4_allocation_context *ac,
if (ar->pright && start + size - 1 >= ar->lright)
size -= start + size - ar->lright;
+ /*
+ * Trim allocation request for filesystems with artificially small
+ * groups.
+ */
+ if (size > EXT4_BLOCKS_PER_GROUP(ac->ac_sb))
+ size = EXT4_BLOCKS_PER_GROUP(ac->ac_sb);
+
end = start + size;
/* check we don't cross already preallocated blocks */