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17a5adccf3
linux/fs/btrfs
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Alexandre Oliva 17a5adccf3 btrfs: do away with non-whole_page extent I/O 
end_bio_extent_readpage computes whole_page based on bv_offset and
bv_len, without taking into account that blk_update_request may modify
them when some of the blocks to be read into a page produce a read
error.  This would cause the read to unlock only part of the file
range associated with the page, which would in turn leave the entire
page locked, which would not only keep the process blocked instead of
returning -EIO to it, but also prevent any further access to the file.

It turns out that btrfs always issues whole-page reads and writes.
The special handling of non-whole_page appears to be a mistake or a
left-over from a time when this wasn't the case.  Indeed,
end_bio_extent_writepage distinguished between whole_page and
non-whole_page writes but behaved identically in both cases!

I've replaced the whole_page computations with warnings, just to be
sure that we're not issuing partial page reads or writes.  The
warnings should probably just go away some time.

Signed-off-by: Alexandre Oliva <oliva@gnu.org>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
2013-05-17 21:40:35 -04:00
..
acl.c Btrfs: skip adding an acl attribute if we don't have to 2012-12-16 20:46:15 -05:00
async-thread.c Btrfs: call the ordered free operation without any locks held 2012-07-25 16:15:07 -04:00
async-thread.h btrfs: return void in functions without error conditions 2012-03-22 01:45:34 +01:00
backref.c Btrfs: fix possible memory leak in the find_parent_nodes() 2013-05-17 21:40:17 -04:00
backref.h btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
btrfs_inode.h btrfs: fix minor typo in comment 2013-05-06 15:54:49 -04:00
check-integrity.c btrfs: define BTRFS_MAGIC as a u64 value 2013-02-20 13:00:01 -05:00
check-integrity.h Btrfs: add optional integrity check code 2011-12-21 19:14:09 +01:00
compat.h
compression.c btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
compression.h btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
ctree.c Btrfs: handle running extent ops with skinny metadata 2013-05-17 21:40:15 -04:00
ctree.h Btrfs: handle running extent ops with skinny metadata 2013-05-17 21:40:15 -04:00
delayed-inode.c btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
delayed-inode.h Btrfs: improve the delayed inode throttling 2013-03-07 07:52:40 -05:00
delayed-ref.c Btrfs: separate sequence numbers for delayed ref tracking and tree mod log 2013-05-06 15:55:17 -04:00
delayed-ref.h Btrfs: handle running extent ops with skinny metadata 2013-05-17 21:40:15 -04:00
dev-replace.c Btrfs: don't allow device replace on RAID5/RAID6 2013-05-17 21:40:16 -04:00
dev-replace.h Btrfs: add new sources for device replace code 2012-12-12 17:15:41 -05:00
dir-item.c btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
disk-io.c Btrfs: don't invoke btrfs_invalidate_inodes() in the spin lock context 2013-05-17 21:40:34 -04:00
disk-io.h btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
export.c fs: encode_fh: return FILEID_INVALID if invalid fid_type 2013-02-26 02:46:10 -05:00
export.h
extent_io.c btrfs: do away with non-whole_page extent I/O 2013-05-17 21:40:35 -04:00
extent_io.h btrfs: use unsigned long type for extent state bits 2013-05-06 15:55:27 -04:00
extent_map.c btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
extent_map.h Btrfs: fix bad extent logging 2013-05-06 15:54:34 -04:00
extent-tree.c Btrfs: update the global reserve if it is empty 2013-05-17 21:40:26 -04:00
file-item.c btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
file.c btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
free-space-cache.c Btrfs: don't use global block reservation for inode cache truncation 2013-05-17 21:40:22 -04:00
free-space-cache.h Btrfs: don't use global block reservation for inode cache truncation 2013-05-17 21:40:22 -04:00
hash.h btrfs: extended inode refs 2012-10-09 09:14:45 -04:00
inode-item.c btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
inode-map.c Btrfs: don't use global block reservation for inode cache truncation 2013-05-17 21:40:22 -04:00
inode-map.h
inode.c Btrfs: fix unprotected root node of the subvolume's inode rb-tree 2013-05-17 21:40:30 -04:00
ioctl.c btrfs: don't stop searching after encountering the wrong item 2013-05-17 21:40:10 -04:00
Kconfig btrfs: move leak debug code to functions 2013-05-06 15:55:16 -04:00
locking.c btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
locking.h Btrfs: remove btrfs_try_spin_lock 2013-03-14 14:57:10 -04:00
lzo.c btrfs: remove the second argument of k[un]map_atomic() 2012-03-20 21:48:21 +08:00
Makefile Btrfs: RAID5 and RAID6 2013-02-01 14:24:23 -05:00
math.h Btrfs: cleanup duplicated division functions 2012-12-11 13:31:30 -05:00
ordered-data.c Btrfs: improve the performance of the csums lookup 2013-05-06 15:54:35 -04:00
ordered-data.h Btrfs: improve the performance of the csums lookup 2013-05-06 15:54:35 -04:00
orphan.c btrfs: replace many BUG_ONs with proper error handling 2012-03-22 11:52:54 +01:00
print-tree.c Btrfs: Include the device in most error printk()s 2013-05-06 15:54:23 -04:00
print-tree.h btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
qgroup.c Btrfs: automatic rescan after "quota enable" command 2013-05-06 15:55:20 -04:00
raid56.c btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
raid56.h Btrfs: RAID5 and RAID6 2013-02-01 14:24:23 -05:00
rcu-string.h Btrfs: use rcu to protect device->name 2012-06-14 21:29:16 -04:00
reada.c Btrfs: fix reada debug code compilation 2013-05-06 15:54:55 -04:00
relocation.c Btrfs: don't use global block reservation for inode cache truncation 2013-05-17 21:40:22 -04:00
root-tree.c Btrfs: delete unused parameter to btrfs_read_root_item() 2013-05-06 15:55:14 -04:00
scrub.c Btrfs: improve the loop of scrub_stripe 2013-05-06 15:55:26 -04:00
send.c btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
send.h btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
struct-funcs.c Btrfs: rewrite BTRFS_SETGET_FUNCS 2012-07-23 16:28:06 -04:00
super.c Btrfs: pause the space balance when remounting to R/O 2013-05-17 21:40:31 -04:00
sysfs.c btrfs: fixup/remove module.h usage as required 2013-03-01 15:01:01 -05:00
transaction.c btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
transaction.h btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
tree-defrag.c btrfs: remove cache only arguments from defrag path 2013-02-20 12:59:36 -05:00
tree-log.c btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
tree-log.h btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
ulist.c Btrfs: add a rb_tree to improve performance of ulist search 2013-05-06 15:54:44 -04:00
ulist.h Btrfs: add a rb_tree to improve performance of ulist search 2013-05-06 15:54:44 -04:00
version.h
volumes.c Correct allowed raid levels on balance. 2013-05-17 21:40:20 -04:00
volumes.h btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
xattr.c btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
xattr.h
zlib.c btrfs: fix message printing 2012-10-09 09:19:57 -04:00