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46bfbb5c07
linux/fs/btrfs
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Chris Mason 46bfbb5c07 Btrfs: fix preallocation and nodatacow checks in O_DIRECT 
The O_DIRECT code wasn't checking for multiple references
on preallocated or nodatacow extents.  This means it
wasn't honoring snapshots properly.

The fix here is to add an explicit check for multiple references
This also fixes the math for selecting the correct disk block,
making sure not to go past the end of the extent.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
2010-05-26 21:34:45 -04:00
..
acl.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
async-thread.c Btrfs: don't walk around with task->state != TASK_RUNNING 2010-05-25 10:34:58 -04:00
async-thread.h Btrfs: fix deadlock on async thread startup 2009-10-05 09:44:45 -04:00
btrfs_inode.h Btrfs: Metadata reservation for orphan inodes 2010-05-25 10:34:52 -04:00
compat.h Btrfs: drop remaining LINUX_KERNEL_VERSION checks and compat code 2009-01-06 09:38:55 -05:00
compression.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable 2010-04-05 13:21:15 -07:00
compression.h Btrfs: Add zlib compression support 2008-10-29 14:49:59 -04:00
ctree.c Btrfs: Metadata ENOSPC handling for balance 2010-05-25 10:34:54 -04:00
ctree.h Btrfs: add basic DIO read/write support 2010-05-25 10:34:57 -04:00
delayed-ref.c Btrfs: Integrate metadata reservation with start_transaction 2010-05-25 10:34:50 -04:00
delayed-ref.h Btrfs: Integrate metadata reservation with start_transaction 2010-05-25 10:34:50 -04:00
dir-item.c Btrfs: Pass transaction handle to security and ACL initialization functions 2009-12-17 12:33:34 -05:00
disk-io.c Btrfs: use async helpers for DIO write checksumming 2010-05-25 10:34:58 -04:00
disk-io.h Btrfs: use async helpers for DIO write checksumming 2010-05-25 10:34:58 -04:00
export.c Btrfs: change how we mount subvolumes 2010-03-15 10:58:13 -04:00
export.h NFS support for btrfs - v3 2008-09-25 11:04:06 -04:00
extent_io.c Btrfs: rework O_DIRECT enospc handling 2010-05-25 21:52:08 -04:00
extent_io.h Btrfs: rework O_DIRECT enospc handling 2010-05-25 21:52:08 -04:00
extent_map.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
extent_map.h Btrfs: search for an allocation hint while filling file COW 2009-09-18 16:08:52 -04:00
extent-tree.c Btrfs: Metadata ENOSPC handling for balance 2010-05-25 10:34:54 -04:00
file-item.c Btrfs: add basic DIO read/write support 2010-05-25 10:34:57 -04:00
file.c Btrfs: move O_DIRECT space reservation to btrfs_direct_IO 2010-05-26 10:59:53 -04:00
free-space-cache.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
free-space-cache.h Btrfs: use hybrid extents+bitmap rb tree for free space 2009-07-24 09:23:30 -04:00
hash.h Btrfs: remove crc32c.h and use libcrc32c directly. 2009-06-10 11:29:53 -04:00
inode-item.c Btrfs: Integrate metadata reservation with start_transaction 2010-05-25 10:34:50 -04:00
inode-map.c Btrfs: do not reuse objectid of deleted snapshot/subvol 2009-09-21 15:56:00 -04:00
inode.c Btrfs: fix preallocation and nodatacow checks in O_DIRECT 2010-05-26 21:34:45 -04:00
ioctl.c Btrfs: Metadata reservation for orphan inodes 2010-05-25 10:34:52 -04:00
ioctl.h Btrfs: use __u64 types in ioctl.h 2010-03-16 14:24:27 -04:00
Kconfig Revert "task_struct: make journal_info conditional" 2009-12-17 13:23:24 -08:00
locking.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
locking.h Btrfs: fix spinlock assertions on UP systems 2009-03-09 11:45:38 -04:00
Makefile Btrfs: Mixed back reference (FORWARD ROLLING FORMAT CHANGE) 2009-06-10 11:29:46 -04:00
ordered-data.c Btrfs: add basic DIO read/write support 2010-05-25 10:34:57 -04:00
ordered-data.h Btrfs: add basic DIO read/write support 2010-05-25 10:34:57 -04:00
orphan.c Btrfs: change how subvolumes are organized 2009-09-21 15:56:00 -04:00
print-tree.c Btrfs: remove of redundant btrfs_header_level 2009-07-22 16:52:13 -04:00
print-tree.h Btrfs: Create extent_buffer interface for large blocksizes 2008-09-25 11:03:56 -04:00
ref-cache.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
ref-cache.h Btrfs: use RB_ROOT to intialize rb_trees instead of setting rb_node to NULL 2010-03-08 16:26:50 -05:00
relocation.c Btrfs: Metadata ENOSPC handling for balance 2010-05-25 10:34:54 -04:00
root-tree.c Btrfs: Metadata reservation for orphan inodes 2010-05-25 10:34:52 -04:00
struct-funcs.c Btrfs: Fix checkpatch.pl warnings 2009-01-05 21:25:51 -05:00
super.c Btrfs: Metadata reservation for orphan inodes 2010-05-25 10:34:52 -04:00
sysfs.c Driver core: Constify struct sysfs_ops in struct kobj_type 2010-03-07 17:04:49 -08:00
transaction.c Btrfs: don't walk around with task->state != TASK_RUNNING 2010-05-25 10:34:58 -04:00
transaction.h Btrfs: Introduce global metadata reservation 2010-05-25 10:34:52 -04:00
tree-defrag.c Btrfs: Introduce global metadata reservation 2010-05-25 10:34:52 -04:00
tree-log.c Btrfs: Metadata ENOSPC handling for tree log 2010-05-25 10:34:53 -04:00
tree-log.h Btrfs: Metadata ENOSPC handling for tree log 2010-05-25 10:34:53 -04:00
version.h Update Btrfs files for in-kernel usage 2008-09-25 15:41:59 -04:00
version.sh Btrfs: Fixes for 2.6.28-rc API changes 2008-11-19 21:17:22 -05:00
volumes.c Btrfs: Integrate metadata reservation with start_transaction 2010-05-25 10:34:50 -04:00
volumes.h Btrfs: make balance code choose more wisely when relocating 2009-09-21 19:23:48 -04:00
xattr.c Btrfs: Integrate metadata reservation with start_transaction 2010-05-25 10:34:50 -04:00
xattr.h Btrfs: Pass transaction handle to security and ACL initialization functions 2009-12-17 12:33:34 -05:00
zlib.c Btrfs: correct error-handling zlib error handling 2009-08-07 13:51:33 -04:00