[RFC,V11,20/21] Btrfs: subpagesize-blockssize: Limit inline extents to root->sectorsize.
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Message ID 1433172176-8742-21-git-send-email-chandan@linux.vnet.ibm.com
State New
Headers show

Commit Message

Chandan Rajendra June 1, 2015, 3:22 p.m. UTC
cow_file_range_inline() limits the size of an inline extent to
PAGE_CACHE_SIZE. This breaks in subpagesize-blocksize scenarios. Fix this by
comparing against root->sectorsize.

Signed-off-by: Chandan Rajendra <chandan@linux.vnet.ibm.com>
---
 fs/btrfs/inode.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Patch
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diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 1684339..4d42123 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -258,7 +258,7 @@  static noinline int cow_file_range_inline(struct btrfs_root *root,
 		data_len = compressed_size;
 
 	if (start > 0 ||
-	    actual_end > PAGE_CACHE_SIZE ||
+	    actual_end > root->sectorsize ||
 	    data_len > BTRFS_MAX_INLINE_DATA_SIZE(root) ||
 	    (!compressed_size &&
 	    (actual_end & (root->sectorsize - 1)) == 0) ||