Our code is not ready to cope with a sectorsize that's larger than PAGE_SIZE.
Signed-off-by: Liu Bo <liubo2009@xxxxxxxxxxxxxx>
---
fs/btrfs/disk-io.c | 8 ++++++++
1 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 20196f4..08e49d2 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -2104,6 +2104,14 @@ int open_ctree(struct super_block *sb,
err = -EINVAL;
goto fail_alloc;
}
+ if (btrfs_super_sectorsize(disk_super) > PAGE_CACHE_SIZE) {
+ printk(KERN_ERR "BTRFS: couldn't mount because sectorsize(%d)"
+ " was larger than PAGE_SIZE(%lu)\n",
+ btrfs_super_sectorsize(disk_super),
+ (unsigned long long)PAGE_CACHE_SIZE);
+ err = -EINVAL;
+ goto fail_alloc;
+ }
features = btrfs_super_incompat_flags(disk_super);
features |= BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF;
--
1.6.5.2
--
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