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Josef Bacik 8bb8ab2e93 Btrfs: rework how we reserve metadata bytes 
With multi-threaded writes we were getting ENOSPC early because somebody would
come in, start flushing delalloc because they couldn't make their reservation,
and in the meantime other threads would come in and use the space that was
getting freed up, so when the original thread went to check to see if they had
space they didn't and they'd return ENOSPC.  So instead if we have some free
space but not enough for our reservation, take the reservation and then start
doing the flushing.  The only time we don't take reservations is when we've
already overcommitted our space, that way we don't have people who come late to
the party way overcommitting ourselves.  This also moves all of the retrying and
flushing code into reserve_metdata_bytes so it's all uniform.  This keeps my
fs_mark test from returning -ENOSPC as soon as it starts and actually lets me
fill up the disk.  Thanks,

Signed-off-by: Josef Bacik <josef@redhat.com>
2010-10-22 15:55:01 -04:00
..
acl.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable 2010-06-11 14:18:47 -07:00
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: fix split_leaf double split corner case 2010-07-19 16:14:50 -04:00
ctree.h Btrfs: rework how we reserve metadata bytes 2010-10-22 15:55:01 -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: btrfs_read_fs_root_no_name() returns ERR_PTRs 2010-06-11 15:57:36 -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 writeback: remove writeback_inodes_wbc 2010-07-06 08:54:03 +02:00
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: rework how we reserve metadata bytes 2010-10-22 15:55:01 -04:00
file-item.c Btrfs: add basic DIO read/write support 2010-05-25 10:34:57 -04:00
file.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable 2010-06-11 14:18:47 -07:00
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: re-work delalloc flushing 2010-10-22 15:54:58 -04:00
ioctl.c Btrfs: fix the df ioctl to report raid types 2010-10-22 15:54:53 -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
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: rework how we reserve metadata bytes 2010-10-22 15:55:01 -04:00
root-tree.c Btrfs: avoid BUG when dropping root and reference in same transaction 2010-06-11 15:57:39 -04:00
struct-funcs.c Btrfs: Fix checkpatch.pl warnings 2009-01-05 21:25:51 -05:00
super.c Btrfs: fix df regression 2010-10-22 15:54:55 -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: rework how we reserve metadata bytes 2010-10-22 15:55:01 -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 Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable 2010-05-27 10:43:44 -07:00
xattr.h btrfs: constify xattr_handler 2010-05-21 18:31:18 -04:00
zlib.c Btrfs: correct error-handling zlib error handling 2009-08-07 13:51:33 -04:00