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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-01-13 19:27:28 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-01-13 19:27:28 +0100 |
| commit | b2034d474b7e1e8578bd5c2977024b51693269d9 (patch) | |
| tree | e43969bf7c2ba89884c2580f56978826f1014520 /Documentation | |
| parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 (diff) | |
| parent | fs: add documentation on fallocate hole punching (diff) | |
| download | linux-b2034d474b7e1e8578bd5c2977024b51693269d9.tar.xz linux-b2034d474b7e1e8578bd5c2977024b51693269d9.zip | |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (41 commits)
fs: add documentation on fallocate hole punching
Gfs2: fail if we try to use hole punch
Btrfs: fail if we try to use hole punch
Ext4: fail if we try to use hole punch
Ocfs2: handle hole punching via fallocate properly
XFS: handle hole punching via fallocate properly
fs: add hole punching to fallocate
vfs: pass struct file to do_truncate on O_TRUNC opens (try #2)
fix signedness mess in rw_verify_area() on 64bit architectures
fs: fix kernel-doc for dcache::prepend_path
fs: fix kernel-doc for dcache::d_validate
sanitize ecryptfs ->mount()
switch afs
move internal-only parts of ncpfs headers to fs/ncpfs
switch ncpfs
switch 9p
pass default dentry_operations to mount_pseudo()
switch hostfs
switch affs
switch configfs
...
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/filesystems/porting | 9 | ||||
| -rw-r--r-- | Documentation/magic-number.txt | 2 |
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 |