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RHBZ: 1021460
There is an issue where when multiple threads open/close the same directory
ntwrk_buf_start might end up being NULL, causing the call to smbCalcSize
later to oops with a NULL deref.
The real bug is why this happens and why this can become NULL for an
open cfile, which should not be allowed.
This patch tries to avoid a oops until the time when we fix the underlying
issue.
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
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password_with_pad is a fixed size buffer of 16 bytes, it contains a
password string, to be padded with \0 if shorter than 16 bytes
but is just truncated if longer.
It is not, and we do not depend on it to be, nul terminated.
As such, do not use strncpy() to populate this buffer since
the str* prefix suggests that this is a string, which it is not,
and it also confuses coverity causing a false warning.
Detected by CoverityScan CID#113743 ("Buffer not null terminated")
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
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Fixes gcc '-Wunused-but-set-variable' warning:
fs/cifs/sess.c: In function '_sess_auth_rawntlmssp_assemble_req':
fs/cifs/sess.c:1157:18: warning:
variable 'smb_buf' set but not used [-Wunused-but-set-variable]
It never used since commit cc87c47d9d7a ("cifs: Separate rawntlmssp auth
from CIFS_SessSetup()")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
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To avoid the warning:
warning: this statement may fall through [-Wimplicit-fallthrough=]
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Steve French <stfrench@microsoft.com>
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Reducing the number of network roundtrips improves the performance
of query xattrs
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
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Technically 3.02 is not the dialect name although that is more familiar to
many, so we should also accept the official dialect name (3.0.2 vs. 3.02)
in vers=
Signed-off-by: Kenneth D'souza <kdsouza@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
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and convert statfs to use it.
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
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This is not actually a bug but as Coverity points out we shouldn't
be doing an "|=" on a value which hasn't been set (although technically
it was memset to zero so isn't a bug) and so might as well change
"|=" to "=" in this line
Detected by CoverityScan, CID#728535 ("Unitialized scalar variable")
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
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As Coverity points out le16_to_cpu(midEntry->Command) can not be
less than zero.
Detected by CoverityScan, CID#1438650 ("Macro compares unsigned to 0")
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
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Improve performance by reducing number of network round trips
for set xattr.
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
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Trivial fix to clean up indentation, replace spaces with tab
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
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This mostly reverts commit 849a370016a5 ("block: avoid ordered task
state change for polled IO"). It was wrongly claiming that the ordering
wasn't necessary. The memory barrier _is_ necessary.
If something is truly polling and not going to sleep, it's the whole
state setting that is unnecessary, not the memory barrier. Whenever you
set your state to a sleeping state, you absolutely need the memory
barrier.
Note that sometimes the memory barrier can be elsewhere. For example,
the ordering might be provided by an external lock, or by setting the
process state to sleeping before adding yourself to the wait queue list
that is used for waking up (where the wait queue lock itself will
guarantee that any wakeup will correctly see the sleeping state).
But none of those cases were true here.
NOTE! Some of the polling paths may indeed be able to drop the state
setting entirely, at which point the memory barrier also goes away.
(Also note that this doesn't revert the TASK_RUNNING cases: there is no
race between a wakeup and setting the process state to TASK_RUNNING,
since the end result doesn't depend on ordering).
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull dax fix from Dan Williams:
"Clean up unnecessary usage of prepare_to_wait_exclusive().
While I feel a bit silly sending a single-commit pull-request there is
nothing else queued up for dax this cycle. This change has shipped in
-next for multiple releases"
* tag 'dax-fix-4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
dax: Use non-exclusive wait in wait_entry_unlocked()
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get_unlocked_entry() uses an exclusive wait because it is guaranteed to
eventually obtain the lock and follow on with an unlock+wakeup cycle.
The wait_entry_unlocked() path does not have the same guarantee. Rather
than open-code an extra wakeup, just switch to a non-exclusive wait.
Cc: Jan Kara <jack@suse.cz>
Cc: Matthew Wilcox <willy@infradead.org>
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs
Pull f2fs updates from Jaegeuk Kim:
"In this round, we've focused on bug fixes since Pixel devices have
been shipping with f2fs. Some of them were related to hardware
encryption support which are actually not an issue in mainline, but
would be better to merge them in order to avoid potential bugs.
Enhancements:
- do GC sub-sections when the section is large
- add a flag in ioctl(SHUTDOWN) to trigger fsck for QA
- use kvmalloc() in order to give another chance to avoid ENOMEM
Bug fixes:
- fix accessing memory boundaries in a malformed iamge
- GC gives stale unencrypted block
- GC counts in large sections
- detect idle time more precisely
- block allocation of DIO writes
- race conditions between write_begin and write_checkpoint
- allow GCs for node segments via ioctl()
There are various clean-ups and minor bug fixes as well"
* tag 'f2fs-for-4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (43 commits)
f2fs: sanity check of xattr entry size
f2fs: fix use-after-free issue when accessing sbi->stat_info
f2fs: check PageWriteback flag for ordered case
f2fs: fix validation of the block count in sanity_check_raw_super
f2fs: fix missing unlock(sbi->gc_mutex)
f2fs: fix to dirty inode synchronously
f2fs: clean up structure extent_node
f2fs: fix block address for __check_sit_bitmap
f2fs: fix sbi->extent_list corruption issue
f2fs: clean up checkpoint flow
f2fs: flush stale issued discard candidates
f2fs: correct wrong spelling, issing_*
f2fs: use kvmalloc, if kmalloc is failed
f2fs: remove redundant comment of unused wio_mutex
f2fs: fix to reorder set_page_dirty and wait_on_page_writeback
f2fs: clear PG_writeback if IPU failed
f2fs: add an ioctl() to explicitly trigger fsck later
f2fs: avoid frequent costly fsck triggers
f2fs: fix m_may_create to make OPU DIO write correctly
f2fs: fix to update new block address correctly for OPU
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There is a security report where f2fs_getxattr() has a hole to expose wrong
memory region when the image is malformed like this.
f2fs_getxattr: entry->e_name_len: 4, size: 12288, buffer_size: 16384, len: 4
Cc: <stable@vger.kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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iput() on sbi->node_inode can update sbi->stat_info
in the below context, if the f2fs_write_checkpoint()
has failed with error.
f2fs_balance_fs_bg+0x1ac/0x1ec
f2fs_write_node_pages+0x4c/0x260
do_writepages+0x80/0xbc
__writeback_single_inode+0xdc/0x4ac
writeback_single_inode+0x9c/0x144
write_inode_now+0xc4/0xec
iput+0x194/0x22c
f2fs_put_super+0x11c/0x1e8
generic_shutdown_super+0x70/0xf4
kill_block_super+0x2c/0x5c
kill_f2fs_super+0x44/0x50
deactivate_locked_super+0x60/0x8c
deactivate_super+0x68/0x74
cleanup_mnt+0x40/0x78
Fix this by moving f2fs_destroy_stats() further below iput() in
both f2fs_put_super() and f2fs_fill_super() paths.
Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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For all ordered cases in f2fs_wait_on_page_writeback(), we need to
check PageWriteback status, so let's clean up to relocate the check
into f2fs_wait_on_page_writeback().
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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Treat "block_count" from struct f2fs_super_block as 64-bit little endian
value in sanity_check_raw_super() because struct f2fs_super_block
declares "block_count" as "__le64".
This fixes a bug where the superblock validation fails on big endian
devices with the following error:
F2FS-fs (sda1): Wrong segment_count / block_count (61439 > 0)
F2FS-fs (sda1): Can't find valid F2FS filesystem in 1th superblock
F2FS-fs (sda1): Wrong segment_count / block_count (61439 > 0)
F2FS-fs (sda1): Can't find valid F2FS filesystem in 2th superblock
As result of this the partition cannot be mounted.
With this patch applied the superblock validation works fine and the
partition can be mounted again:
F2FS-fs (sda1): Mounted with checkpoint version = 7c84
My little endian x86-64 hardware was able to mount the partition without
this fix.
To confirm that mounting f2fs filesystems works on big endian machines
again I tested this on a 32-bit MIPS big endian (lantiq) device.
Fixes: 0cfe75c5b01199 ("f2fs: enhance sanity_check_raw_super() to avoid potential overflows")
Cc: stable@vger.kernel.org
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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This fixes missing unlock call.
Cc: <stable@vger.kernel.org>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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If user change inode's i_flags via ioctl, let's add it into global
dirty list, so that checkpoint can guarantee its persistence before
fsync, it can make checkpoint keeping strong consistency.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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The union in struct extent_node wass only to indicate below fields
struct rb_node rb_node;
union {
struct {
unsigned int fofs;
unsigned int len;
...
...
can be parsed as fields in struct rb_entry, but they were never be
used explicitly before, so let's remove them for cleanup.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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Should use lstart (logical start address) instead of start (in dev) here.
This fixes a bug in multi-device scenarios.
Signed-off-by: Qiuyang Sun <sunqiuyang@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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When there is a failure in f2fs_fill_super() after/during
the recovery of fsync'd nodes, it frees the current sbi and
retries again. This time the mount is successful, but the files
that got recovered before retry, still holds the extent tree,
whose extent nodes list is corrupted since sbi and sbi->extent_list
is freed up. The list_del corruption issue is observed when the
file system is getting unmounted and when those recoverd files extent
node is being freed up in the below context.
list_del corruption. prev->next should be fffffff1e1ef5480, but was (null)
<...>
kernel BUG at kernel/msm-4.14/lib/list_debug.c:53!
lr : __list_del_entry_valid+0x94/0xb4
pc : __list_del_entry_valid+0x94/0xb4
<...>
Call trace:
__list_del_entry_valid+0x94/0xb4
__release_extent_node+0xb0/0x114
__free_extent_tree+0x58/0x7c
f2fs_shrink_extent_tree+0xdc/0x3b0
f2fs_leave_shrinker+0x28/0x7c
f2fs_put_super+0xfc/0x1e0
generic_shutdown_super+0x70/0xf4
kill_block_super+0x2c/0x5c
kill_f2fs_super+0x44/0x50
deactivate_locked_super+0x60/0x8c
deactivate_super+0x68/0x74
cleanup_mnt+0x40/0x78
__cleanup_mnt+0x1c/0x28
task_work_run+0x48/0xd0
do_notify_resume+0x678/0xe98
work_pending+0x8/0x14
Fix this by not creating extents for those recovered files if shrinker is
not registered yet. Once mount is successful and shrinker is registered,
those files can have extents again.
Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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This patch cleans up checkpoint flow a bit:
- remove unneeded circulation of flushing meta pages.
- don't flush nat_bits pages in prior to other checkpoint pages.
- add bug_on to check remained meta pages after flushing.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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Sometimes, I could observe # of issuing_discard to be 1 which blocks background
jobs due to is_idle()=false.
The only way to get out of it was to trigger gc_urgent. This patch avoids that
by checking any candidates as done in the list.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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Let's use "queued" instead of "issuing".
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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One report says memalloc failure during mount.
(unwind_backtrace) from [<c010cd4c>] (show_stack+0x10/0x14)
(show_stack) from [<c049c6b8>] (dump_stack+0x8c/0xa0)
(dump_stack) from [<c024fcf0>] (warn_alloc+0xc4/0x160)
(warn_alloc) from [<c0250218>] (__alloc_pages_nodemask+0x3f4/0x10d0)
(__alloc_pages_nodemask) from [<c0270450>] (kmalloc_order_trace+0x2c/0x120)
(kmalloc_order_trace) from [<c03fa748>] (build_node_manager+0x35c/0x688)
(build_node_manager) from [<c03de494>] (f2fs_fill_super+0xf0c/0x16cc)
(f2fs_fill_super) from [<c02a5864>] (mount_bdev+0x15c/0x188)
(mount_bdev) from [<c03da624>] (f2fs_mount+0x18/0x20)
(f2fs_mount) from [<c02a68b8>] (mount_fs+0x158/0x19c)
(mount_fs) from [<c02c3c9c>] (vfs_kern_mount+0x78/0x134)
(vfs_kern_mount) from [<c02c76ac>] (do_mount+0x474/0xca4)
(do_mount) from [<c02c8264>] (SyS_mount+0x94/0xbc)
(SyS_mount) from [<c0108180>] (ret_fast_syscall+0x0/0x48)
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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Commit 089842de ("f2fs: remove codes of unused wio_mutex") removes codes
of unused wio_mutex, but missing the comment, so delete it.
Signed-off-by: Yunlong Song <yunlong.song@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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This patch reorders flow from
- update page
- set_page_dirty
- wait_on_page_writeback
to
- wait_on_page_writeback
- update page
- set_page_dirty
The reason is:
- set_page_dirty will increase reference of dirty page, the reference
should be cleared before wait_on_page_writeback to keep its consistency.
- some devices need stable page during page writebacking, so we
should not change page's data.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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If IPU failed, nothing is commited, we should end page writeback.
Signed-off-by: Sheng Yong <shengyong1@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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This adds an option in ioctl(F2FS_IOC_SHUTDOWN) in order to trigger fsck by
setting a NEED_FSCK flag.
Generally, shutdown is used for the test to validate filesystem consistency, and
setting NEED_FSCK flag can be used for Android to trigger fsck.f2fs at boot time
explicitly so that we could measure the elapsed time as well as force filesystem
check.
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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If we want to re-enable nat_bits, we rely on fsck which requires full scan
of directory tree. Let's do that by regular fsck or unclean shutdown.
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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Previously, we added a parameter @map.m_may_create to trigger OPU
allocation and call f2fs_balance_fs() correctly.
But in get_more_blocks(), @create has been overwritten by below code.
So the function f2fs_map_blocks() will not allocate new block address
but directly go out. Meanwile,there are several functions calling
f2fs_map_blocks() directly and @map.m_may_create not initialized.
CODE:
create = dio->op == REQ_OP_WRITE;
if (dio->flags & DIO_SKIP_HOLES) {
if (fs_startblk <= ((i_size_read(dio->inode) - 1) >>
i_blkbits))
create = 0;
}
This patch fixes it.
Signed-off-by: Jia Zhu <zhujia13@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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Previously, we allocated a new block address for OPU mode in direct_IO.
But the new address couldn't be assigned to @map->m_pblk correctly.
This patch fix it.
Cc: <stable@vger.kernel.org>
Fixes: 511f52d02f05 ("f2fs: allow out-place-update for direct IO in LFS mode")
Signed-off-by: Jia Zhu <zhujia13@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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Adjust the trace print in f2fs_get_victim() to cover GC done by
F2FS_IOC_GARBAGE_COLLECT_RANGE.
Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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Allow node type segments also to be GC'd via f2fs ioctl
F2FS_IOC_GARBAGE_COLLECT_RANGE.
Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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Those strings are immutable.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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The function truncate_node frees the page with f2fs_put_page. However,
the page index is read after that. So, the patch reads the index before
freeing the page.
Fixes: bf39c00a9a7f ("f2fs: drop obsolete node page when it is truncated")
Cc: <stable@vger.kernel.org>
Signed-off-by: Pan Bian <bianpan2016@163.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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When call f2fs_acl_create_masq() failed, the caller f2fs_acl_create()
should return -EIO instead of -ENOMEM, this patch makes it consistent
with posix_acl_create() which has been fixed in commit beaf226b863a
("posix_acl: don't ignore return value of posix_acl_create_masq()").
Fixes: 83dfe53c185e ("f2fs: fix reference leaks in f2fs_acl_create")
Signed-off-by: Tiezhu Yang <kernelpatch@126.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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After merging the f2fs tree, today's linux-next build
(x86_64_allmodconfig) produced this warning:
In file included from fs/f2fs/dir.c:11:
fs/f2fs/f2fs.h: In function '__mark_inode_dirty_flag':
fs/f2fs/f2fs.h:2388:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
if (set)
^
fs/f2fs/f2fs.h:2390:2: note: here
case FI_DATA_EXIST:
^~~~
Exposed by my use of -Wimplicit-fallthrough
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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The following race could lead to inconsistent SIT bitmap:
Task A Task B
====== ======
f2fs_write_checkpoint
block_operations
f2fs_lock_all
down_write(node_change)
down_write(node_write)
... sync ...
up_write(node_change)
f2fs_file_write_iter
set_inode_flag(FI_NO_PREALLOC)
......
f2fs_write_begin(index=0, has inline data)
prepare_write_begin
__do_map_lock(AIO) => down_read(node_change)
f2fs_convert_inline_page => update SIT
__do_map_lock(AIO) => up_read(node_change)
f2fs_flush_sit_entries <= inconsistent SIT
finish write checkpoint
sudden-power-off
If SPO occurs after checkpoint is finished, SIT bitmap will be set
incorrectly.
Signed-off-by: Sheng Yong <shengyong1@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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If namelen is corrupted to have very long value, fill_dentries can copy
wrong memory area.
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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Previously, when f2fs finds which temp bio cache owns the target page,
it will flush all the three temp bio caches, but we only need to flush
one single bio cache indeed, which can help to keep bio merged.
Signed-off-by: Yunlong Song <yunlong.song@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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In get_more_blocks(), we may override @create as below code:
create = dio->op == REQ_OP_WRITE;
if (dio->flags & DIO_SKIP_HOLES) {
if (fs_startblk <= ((i_size_read(dio->inode) - 1) >>
i_blkbits))
create = 0;
}
But in f2fs_map_blocks(), we only trigger f2fs_balance_fs() if @create
is 1, so in LFS mode, dio overwrite under LFS mode can easily run out
of free segments, result in below panic.
Call Trace:
allocate_segment_by_default+0xa8/0x270 [f2fs]
f2fs_allocate_data_block+0x1ea/0x5c0 [f2fs]
__allocate_data_block+0x306/0x480 [f2fs]
f2fs_map_blocks+0x6f6/0x920 [f2fs]
__get_data_block+0x4f/0xb0 [f2fs]
get_data_block_dio_write+0x50/0x60 [f2fs]
do_blockdev_direct_IO+0xcd5/0x21e0
__blockdev_direct_IO+0x3a/0x3c
f2fs_direct_IO+0x1ff/0x4a0 [f2fs]
generic_file_direct_write+0xd9/0x160
__generic_file_write_iter+0xbb/0x1e0
f2fs_file_write_iter+0xaf/0x220 [f2fs]
__vfs_write+0xd0/0x130
vfs_write+0xb2/0x1b0
SyS_pwrite64+0x69/0xa0
? vtime_user_exit+0x29/0x70
do_syscall_64+0x6e/0x160
entry_SYSCALL64_slow_path+0x25/0x25
RIP: new_curseg+0x36f/0x380 [f2fs] RSP: ffffac570393f7a8
So this patch introduces a parameter map.m_may_create to indicate that
f2fs_map_blocks() is called from write or read path, which can give the
right hint to let f2fs_map_blocks() trigger OPU allocation and call
f2fs_balanc_fs() correctly.
BTW, it disables physical address preallocation for direct IO in
f2fs_preallocate_blocks, which is redundant to OPU allocation of
f2fs_map_blocks.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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This patch adds missing in-flight discard/preflush/dio command count
check in is_idle().
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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This patch adds f2fs_dio_submit_bio() to hook submit_io/end_io functions
in direct IO path, in order to account DIO.
Later, we will add this count into is_idle() to let background GC/Discard
thread be aware of DIO.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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This patch move dir data flush to write checkpoint process, by
doing this, it may reduce some time for dir fsync.
pre:
-f2fs_do_sync_file enter
-file_write_and_wait_range <- flush & wait
-write_checkpoint
-do_checkpoint <- wait all
-f2fs_do_sync_file exit
now:
-f2fs_do_sync_file enter
-write_checkpoint
-block_operations <- flush dir & no wait
-do_checkpoint <- wait all
-f2fs_do_sync_file exit
Signed-off-by: Yunlei He <heyunlei@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code.
Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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f2fs_ioc_gc_range skips blocks_per_seg each time, however, f2fs_gc moves
blocks of section each time, so fix it from segment to section.
Signed-off-by: Yunlong Song <yunlong.song@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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