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authorLinus Torvalds <torvalds@linux-foundation.org>2017-09-11 13:10:57 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-09-11 13:10:57 -0700
commit89fd915c402113528750353ad6de9ea68a787e5c (patch)
tree03ba8e8e6400e43ef518393259941eae39ee32d8 /fs/ext2
parent66c9457df3926efff65529dab1a8c742df756790 (diff)
parent04c3c982fcc0151ed3574d7ae4f1e62278054d72 (diff)
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Merge tag 'libnvdimm-for-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm from Dan Williams: "A rework of media error handling in the BTT driver and other updates. It has appeared in a few -next releases and collected some late- breaking build-error and warning fixups as a result. Summary: - Media error handling support in the Block Translation Table (BTT) driver is reworked to address sleeping-while-atomic locking and memory-allocation-context conflicts. - The dax_device lookup overhead for xfs and ext4 is moved out of the iomap hot-path to a mount-time lookup. - A new 'ecc_unit_size' sysfs attribute is added to advertise the read-modify-write boundary property of a persistent memory range. - Preparatory fix-ups for arm and powerpc pmem support are included along with other miscellaneous fixes" * tag 'libnvdimm-for-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (26 commits) libnvdimm, btt: fix format string warnings libnvdimm, btt: clean up warning and error messages ext4: fix null pointer dereference on sbi libnvdimm, nfit: move the check on nd_reserved2 to the endpoint dax: fix FS_DAX=n BLOCK=y compilation libnvdimm: fix integer overflow static analysis warning libnvdimm, nd_blk: remove mmio_flush_range() libnvdimm, btt: rework error clearing libnvdimm: fix potential deadlock while clearing errors libnvdimm, btt: cache sector_size in arena_info libnvdimm, btt: ensure that flags were also unchanged during a map_read libnvdimm, btt: refactor map entry operations with macros libnvdimm, btt: fix a missed NVDIMM_IO_ATOMIC case in the write path libnvdimm, nfit: export an 'ecc_unit_size' sysfs attribute ext4: perform dax_device lookup at mount ext2: perform dax_device lookup at mount xfs: perform dax_device lookup at mount dax: introduce a fs_dax_get_by_bdev() helper libnvdimm, btt: check memory allocation failure libnvdimm, label: fix index block size calculation ...
Diffstat (limited to 'fs/ext2')
-rw-r--r--fs/ext2/ext2.h1
-rw-r--r--fs/ext2/inode.c11
-rw-r--r--fs/ext2/super.c4
3 files changed, 8 insertions, 8 deletions
diff --git a/fs/ext2/ext2.h b/fs/ext2/ext2.h
index 23ebb92484c6..28de3edd4f4d 100644
--- a/fs/ext2/ext2.h
+++ b/fs/ext2/ext2.h
@@ -114,6 +114,7 @@ struct ext2_sb_info {
*/
spinlock_t s_lock;
struct mb_cache *s_ea_block_cache;
+ struct dax_device *s_daxdev;
};
static inline spinlock_t *
diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c
index 30163d007b2f..4dca6f348714 100644
--- a/fs/ext2/inode.c
+++ b/fs/ext2/inode.c
@@ -800,10 +800,10 @@ int ext2_get_block(struct inode *inode, sector_t iblock,
static int ext2_iomap_begin(struct inode *inode, loff_t offset, loff_t length,
unsigned flags, struct iomap *iomap)
{
- struct block_device *bdev;
unsigned int blkbits = inode->i_blkbits;
unsigned long first_block = offset >> blkbits;
unsigned long max_blocks = (length + (1 << blkbits) - 1) >> blkbits;
+ struct ext2_sb_info *sbi = EXT2_SB(inode->i_sb);
bool new = false, boundary = false;
u32 bno;
int ret;
@@ -814,13 +814,9 @@ static int ext2_iomap_begin(struct inode *inode, loff_t offset, loff_t length,
return ret;
iomap->flags = 0;
- bdev = inode->i_sb->s_bdev;
- iomap->bdev = bdev;
+ iomap->bdev = inode->i_sb->s_bdev;
iomap->offset = (u64)first_block << blkbits;
- if (blk_queue_dax(bdev->bd_queue))
- iomap->dax_dev = fs_dax_get_by_host(bdev->bd_disk->disk_name);
- else
- iomap->dax_dev = NULL;
+ iomap->dax_dev = sbi->s_daxdev;
if (ret == 0) {
iomap->type = IOMAP_HOLE;
@@ -842,7 +838,6 @@ static int
ext2_iomap_end(struct inode *inode, loff_t offset, loff_t length,
ssize_t written, unsigned flags, struct iomap *iomap)
{
- fs_put_dax(iomap->dax_dev);
if (iomap->type == IOMAP_MAPPED &&
written < length &&
(flags & IOMAP_WRITE))
diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index 7b1bc9059863..fc18edd81815 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -171,6 +171,7 @@ static void ext2_put_super (struct super_block * sb)
brelse (sbi->s_sbh);
sb->s_fs_info = NULL;
kfree(sbi->s_blockgroup_lock);
+ fs_put_dax(sbi->s_daxdev);
kfree(sbi);
}
@@ -813,6 +814,7 @@ static unsigned long descriptor_loc(struct super_block *sb,
static int ext2_fill_super(struct super_block *sb, void *data, int silent)
{
+ struct dax_device *dax_dev = fs_dax_get_by_bdev(sb->s_bdev);
struct buffer_head * bh;
struct ext2_sb_info * sbi;
struct ext2_super_block * es;
@@ -842,6 +844,7 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
}
sb->s_fs_info = sbi;
sbi->s_sb_block = sb_block;
+ sbi->s_daxdev = dax_dev;
spin_lock_init(&sbi->s_lock);
@@ -1200,6 +1203,7 @@ failed_sbi:
kfree(sbi->s_blockgroup_lock);
kfree(sbi);
failed:
+ fs_put_dax(dax_dev);
return ret;
}