ext4: use filemap_write_and_wait_range() correctly in collapse range

Currently we're passing -1 as lend argumnet for
filemap_write_and_wait_range() which is wrong since lend is signed type
so it would cause some confusion and we might not write_and_wait for the
entire range we're expecting to write.

Fix it by using LLONG_MAX instead.

Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 3de9b2d7028cf41a7df173f8ca8b35b4ac5b87b0..f4a676908b0b60be5642fe015943d20545df5e08 100644 (file)
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -5415,7 +5415,7 @@ int ext4_collapse_range(struct inode *inode, loff_t offset, loff_t len)
        }
 
        /* Write out all dirty pages */
-       ret = filemap_write_and_wait_range(inode->i_mapping, offset, -1);
+       ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
        if (ret)
                return ret;