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-rw-r--r--Documentation/filesystems/porting9
-rw-r--r--Documentation/magic-number.txt2
2 files changed, 10 insertions, 1 deletions
diff --git a/Documentation/filesystems/porting b/Documentation/filesystems/porting
index 07a32b42cf9c..266d2059b9b8 100644
--- a/Documentation/filesystems/porting
+++ b/Documentation/filesystems/porting
@@ -385,3 +385,12 @@ Documentation/filesystems/vfs.txt for more details.
on many or all directory inodes on the way down a path walk (to check for
exec permission). These must now be rcu-walk aware (flags & IPERM_RCU). See
Documentation/filesystems/vfs.txt for more details.
+
+--
+[mandatory]
+ In ->fallocate() you must check the mode option passed in. If your
+filesystem does not support hole punching (deallocating space in the middle of a
+file) you must return -EOPNOTSUPP if FALLOC_FL_PUNCH_HOLE is set in mode.
+Currently you can only have FALLOC_FL_PUNCH_HOLE with FALLOC_FL_KEEP_SIZE set,
+so the i_size should not change when hole punching, even when puching the end of
+a file off.
diff --git a/Documentation/magic-number.txt b/Documentation/magic-number.txt
index 505f19607542..4b12abcb2ad3 100644
--- a/Documentation/magic-number.txt
+++ b/Documentation/magic-number.txt
@@ -150,7 +150,7 @@ NBD_REPLY_MAGIC 0x96744668 nbd_reply include/linux/nbd.h
STL_BOARDMAGIC 0xa2267f52 stlbrd include/linux/stallion.h
ENI155_MAGIC 0xa54b872d midway_eprom drivers/atm/eni.h
SCI_MAGIC 0xbabeface gs_port drivers/char/sh-sci.h
-CODA_MAGIC 0xC0DAC0DA coda_file_info include/linux/coda_fs_i.h
+CODA_MAGIC 0xC0DAC0DA coda_file_info fs/coda/coda_fs_i.h
DPMEM_MAGIC 0xc0ffee11 gdt_pci_sram drivers/scsi/gdth.h
STLI_PORTMAGIC 0xe671c7a1 stliport include/linux/istallion.h
YAM_MAGIC 0xF10A7654 yam_port drivers/net/hamradio/yam.c