From: Marc Dionne marc.dionne@auristor.com
[ Upstream commit b485275f1aca8a9da37fd35e4fad673935e827da ]
By default s_maxbytes is set to MAX_NON_LFS, which limits the usable file size to 2GB, enforced by the vfs.
Commit b9b1f8d5930a ("AFS: write support fixes") added support for the 64-bit fetch and store server operations, but did not change this value. As a result, attempts to write past the 2G mark result in EFBIG errors:
$ dd if=/dev/zero of=foo bs=1M count=1 seek=2048 dd: error writing 'foo': File too large
Set s_maxbytes to MAX_LFS_FILESIZE.
Fixes: b9b1f8d5930a ("AFS: write support fixes") Signed-off-by: Marc Dionne marc.dionne@auristor.com Signed-off-by: David Howells dhowells@redhat.com Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- fs/afs/super.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/fs/afs/super.c b/fs/afs/super.c index 689173c0a682f..f8529ddbd587f 100644 --- a/fs/afs/super.c +++ b/fs/afs/super.c @@ -359,6 +359,7 @@ static int afs_fill_super(struct super_block *sb, /* fill in the superblock */ sb->s_blocksize = PAGE_SIZE; sb->s_blocksize_bits = PAGE_SHIFT; + sb->s_maxbytes = MAX_LFS_FILESIZE; sb->s_magic = AFS_FS_MAGIC; sb->s_op = &afs_super_ops; sb->s_xattr = afs_xattr_handlers;