linux.git/fs/f2fs/inline.c, branch v4.5

f2fs: clean up f2fs_balance_fs

2016-01-08T19:45:23+00:00

This patch adds one parameter to clean up all the callers of f2fs_balance_fs.

Signed-off-by: Jaegeuk Kim

f2fs: don't convert inline inode when inline_data option is disable

2015-12-30T18:14:10+00:00

If inline_data option is disable, when truncating an inline inode with
size which is not exceed maxinum inline size, we should not convert
inline inode to regular one to avoid the overhead of synchronizing
conversion.

Signed-off-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: call f2fs_balance_fs only when node was changed

2015-12-30T18:14:09+00:00

If user tries to update or read data, we don't need to call f2fs_balance_fs
which triggers f2fs_gc, which increases unnecessary long latency.

Reviewed-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: check inline_data flag at converting time

2015-12-30T18:14:05+00:00

We can check inode's inline_data flag  when calling to convert it.

Reviewed-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: support fiemap for inline_data

2015-10-20T18:33:21+00:00

There is a FIEMAP_EXTENT_INLINE_DATA, pointed out by Marc.

Reviewed-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: fix error handling for calls to various functions in the function recover_inline_data

2015-10-09T23:20:53+00:00

This fixes error handling for calls to various functions in the
function  recover_inline_data to check if these particular functions
either return a error code or the boolean value false to signal their
caller they have failed internally and if this arises return false
to signal failure immediately to the caller of recover_inline_data
as we cannot continue after failures to calling either the function
truncate_inline_inode or truncate_blocks.

Signed-off-by: Nicholas Krause 
Signed-off-by: Jaegeuk Kim

f2fs: avoid unneeded initializing when converting inline dentry

2015-08-24T16:38:20+00:00

When converting inline dentry, we will zero out target dentry page before
duplicating data of inline dentry into target page, it become overhead
since inline dentry size is not small.

So this patch tries to remove unneeded initializing in the space of target
dentry page.

Signed-off-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: fix to release inode page correctly

2015-08-05T15:08:23+00:00

In following call path, we will pass a locked and referenced ipage
pointer to get_new_data_page:
 - init_inode_metadata
  - make_empty_dir
   - get_new_data_page

There are two exit paths in get_new_data_page when error occurs:
1) grab_cache_page fails, ipage will not be released;
2) f2fs_reserve_block fails, ipage will be released in callee.

So, it's not consistent for error handling in get_new_data_page.

For f2fs_reserve_block, it's not very easy to change the rule
of error handling, since it's already complicated.

Here we deside to choose an easy way to fix this issue:
If any error occur in get_new_data_page, we will ensure releasing
ipage in this function.

The same issue is in f2fs_convert_inline_dir, fix that too.

Signed-off-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: call set_page_dirty to attach i_wb for cgroup

2015-07-25T15:54:26+00:00

The cgroup attaches inode->i_wb via mark_inode_dirty and when set_page_writeback
is called, __inc_wb_stat() updates i_wb's stat.

So, we need to explicitly call set_page_dirty->__mark_inode_dirty in prior to
any writebacking pages.

This patch should resolve the following kernel panic reported by Andreas Reis.

https://bugzilla.kernel.org/show_bug.cgi?id=101801

--- Comment #2 from Andreas Reis  ---
BUG: unable to handle kernel NULL pointer dereference at 00000000000000a8
IP: [] __percpu_counter_add+0x1a/0x90
PGD 2951ff067 PUD 2df43f067 PMD 0
Oops: 0000 [#1] PREEMPT SMP
Modules linked in:
CPU: 7 PID: 10356 Comm: gcc Tainted: G        W       4.2.0-1-cu #1
Hardware name: Gigabyte Technology Co., Ltd. G1.Sniper M5/G1.Sniper M5, BIOS
T01 02/03/2015
task: ffff880295044f80 ti: ffff880295140000 task.ti: ffff880295140000
RIP: 0010:[]  []
__percpu_counter_add+0x1a/0x90
RSP: 0018:ffff880295143ac8  EFLAGS: 00010082
RAX: 0000000000000003 RBX: ffffea000a526d40 RCX: 0000000000000001
RDX: 0000000000000020 RSI: 0000000000000001 RDI: 0000000000000088
RBP: ffff880295143ae8 R08: 0000000000000000 R09: ffff88008f69bb30
R10: 00000000fffffffa R11: 0000000000000000 R12: 0000000000000088
R13: 0000000000000001 R14: ffff88041d099000 R15: ffff880084a205d0
FS:  00007f8549374700(0000) GS:ffff88042f3c0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000000000a8 CR3: 000000033e1d5000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 0000000000000000 ffffea000a526d40 ffff880084a20738 ffff880084a20750
 ffff880295143b48 ffffffff811cc91e ffff880000000000 0000000000000296
 0000000000000000 ffff880417090198 0000000000000000 ffffea000a526d40
Call Trace:
 [] __test_set_page_writeback+0xde/0x1d0
 [] do_write_data_page+0xe7/0x3a0
 [] gc_data_segment+0x5aa/0x640
 [] do_garbage_collect+0x138/0x150
 [] f2fs_gc+0x1be/0x3e0
 [] f2fs_balance_fs+0x81/0x90
 [] f2fs_unlink+0x47/0x1d0
 [] vfs_unlink+0x109/0x1b0
 [] do_unlinkat+0x287/0x2c0
 [] SyS_unlink+0x16/0x20
 [] entry_SYSCALL_64_fastpath+0x12/0x71
Code: 41 5e 5d c3 0f 1f 00 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 55 49
89 f5 41 54 49 89 fc 53 48 83 ec 08 65 ff 05 e6 d9 b6 7e <48> 8b 47 20 48 63 ca
65 8b 18 48 63 db 48 01 f3 48 39 cb 7d 0a
RIP  [] __percpu_counter_add+0x1a/0x90
 RSP 
CR2: 00000000000000a8
---[ end trace 5132449a58ed93a3 ]---
note: gcc[10356] exited with preempt_count 2

Signed-off-by: Jaegeuk Kim

f2fs crypto: add filename encryption for f2fs_lookup

2015-05-28T22:41:54+00:00

This patch implements filename encryption support for f2fs_lookup.

Note that, f2fs_find_entry should be outside of f2fs_(un)lock_op().

Signed-off-by: Jaegeuk Kim