On 7/7/19 8:02 PM, Damien Le Moal wrote:
> On 2019/07/01 14:09, Damien Le Moal wrote:
>> This series addresses a recuring problem with zone revalidation
>> failures observed during extensive testing with memory constrained
>> system and device hot-plugging.
>
> Jens, Martin,
>
> Any comment regar
Martin,
On 2019/07/12 9:28, Martin K. Petersen wrote:
>
> Damien,
>
>> During disk scan and revalidation done with sd_revalidate(), the zones
>> of a zoned disk are checked using the helper function
>> blk_revalidate_disk_zones() if a configuration change is detected
>> (change in the number of
Damien,
> Limit the size of the struct blk_zone array used in
> blk_revalidate_disk_zones() to avoid memory allocation failures
> leading to disk revalidation failure. Also further reduce the
> likelyhood of such failures by using kvcalloc() (that is vmalloc())
> instead of allocating contiguous
Damien,
> During disk scan and revalidation done with sd_revalidate(), the zones
> of a zoned disk are checked using the helper function
> blk_revalidate_disk_zones() if a configuration change is detected
> (change in the number of zones or zone size). The function
> blk_revalidate_disk_zones()
Damien,
> Only GFP_KERNEL and GFP_NOIO are used with blkdev_report_zones(). In
> preparation of using vmalloc() for large report buffer and zone array
> allocations used by this function, remove its "gfp_t gfp_mask" argument
> and rely on the caller context to use memalloc_noio_save/restore() wh
Damien,
> To allow the SCSI subsystem scsi_execute_req() function to issue
> requests using large buffers that are better allocated with vmalloc()
> rather than kmalloc(), modify bio_map_kern() to allow passing a buffer
> allocated with vmalloc().
Looks good to me.
Reviewed-by: Martin K. Peter
Modeled after commit b886ee3e778e ("ext4: Support case-insensitive file
name lookups")
"""
This patch implements the actual support for case-insensitive file name
lookups in f2fs, based on the feature bit and the encoding stored in the
superblock.
A filesystem that has the casefold feature set is
Add charset encoding to f2fs to support casefolding. It is modeled after
the same feature introduced in commit c83ad55eaa91 ("ext4: include charset
encoding information in the superblock")
Currently this is not compatible with encryption, similar to the current
ext4 imlpementation. This will chang
Hi Linus,
Could you please consider this pull request?
Thanks,
The following changes since commit e0654264c4806dc436b291294a0fbf9be7571ab6:
Merge tag 'backlight-next-5.2' of
git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight (2019-05-14
10:45:03 -0700)
are available in the Git rep
On 07/12, Ju Hyung Park wrote:
> Hi everyone.
>
> This is a RFC patch.
>
> This patch introduces an even bigger problem, which is forcing all
> xattr lookup memory allocations to be made in 4076B, when in reality,
> 4076B allocations are only made during initial mounts and the rests
> are made in
Hi everyone.
This is a RFC patch.
This patch introduces an even bigger problem, which is forcing all
xattr lookup memory allocations to be made in 4076B, when in reality,
4076B allocations are only made during initial mounts and the rests
are made in 204B, unnecessarily wasting memory.
In my tes
It's been observed that kzalloc() on lookup_all_xattrs() are called millions
of times on Android, quickly becoming the top abuser of slub memory allocator.
Use a dedicated kmem cache pool for xattr lookups to mitigate this.
Signed-off-by: Park Ju Hyung
---
fs/f2fs/f2fs.h | 6 ++
fs/f2fs/s
https://bugzilla.kernel.org/show_bug.cgi?id=204137
Bug ID: 204137
Summary: F2FS: kernel BUG at fs/f2fs/segment.c:2375!
Product: File System
Version: 2.5
Kernel Version: 5.1.3
Hardware: All
OS: Linux
Tree: Main
https://bugzilla.kernel.org/show_bug.cgi?id=204043
--- Comment #3 from Chao Yu (c...@kernel.org) ---
Could you help to test below two commits?
f2fs: introduce {page,io}_is_mergeable() for readability
f2fs: fix panic of IO alignment feature
https://lore.kernel.org/linux-f2fs-devel/1562841517-7791
Wrap merge condition into function for readability, no logic change.
Signed-off-by: Chao Yu
---
fs/f2fs/data.c | 42 +++---
1 file changed, 35 insertions(+), 7 deletions(-)
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 6a8db4a..bdfd8fb 100644
--- a/fs/f2
Since 07173c3ec276 ("block: enable multipage bvecs"), one bio vector
can store multi pages, so that we can not calculate max IO size of
bio as PAGE_SIZE * bio->bi_max_vecs. However IO alignment feature of
f2fs always has that assumption, so finally, it may cause panic during
IO submission as below
https://bugzilla.kernel.org/show_bug.cgi?id=204135
Bug ID: 204135
Summary: F2FS: BUG: KASAN: null-ptr-deref in
mempool_alloc+0xd8/0x2e0
Product: File System
Version: 2.5
Kernel Version: 5.1.3
Hardware: All
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