Commit b485275f authored by Marc Dionne's avatar Marc Dionne Committed by Linus Torvalds

afs: Fix large file support

By default s_maxbytes is set to MAX_NON_LFS, which limits the usable
file size to 2GB, enforced by the vfs.

Commit b9b1f8d5 ("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: b9b1f8d5 ("AFS: write support fixes")
Signed-off-by: default avatarMarc Dionne <marc.dionne@auristor.com>
Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent cd340703
...@@ -435,6 +435,7 @@ static int afs_fill_super(struct super_block *sb, struct afs_fs_context *ctx) ...@@ -435,6 +435,7 @@ static int afs_fill_super(struct super_block *sb, struct afs_fs_context *ctx)
/* fill in the superblock */ /* fill in the superblock */
sb->s_blocksize = PAGE_SIZE; sb->s_blocksize = PAGE_SIZE;
sb->s_blocksize_bits = PAGE_SHIFT; sb->s_blocksize_bits = PAGE_SHIFT;
sb->s_maxbytes = MAX_LFS_FILESIZE;
sb->s_magic = AFS_FS_MAGIC; sb->s_magic = AFS_FS_MAGIC;
sb->s_op = &afs_super_ops; sb->s_op = &afs_super_ops;
if (!as->dyn_root) if (!as->dyn_root)
......
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