From: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Date: Wed, 16 Nov 2022 18:15:40 +0900
Subject: [PATCH] zonefs: Separate zone information from inode information
References: bsc#1012628
Patch-mainline: 6.2.10
Git-commit: aa7f243f32e1d18036ee00d71d3ccfad70ae2121
[ Upstream commit aa7f243f32e1d18036ee00d71d3ccfad70ae2121 ]
In preparation for adding dynamic inode allocation, separate an inode
zone information from the zonefs inode structure. The new data structure
zonefs_zone is introduced to store in memory information about a zone
that must be kept throughout the lifetime of the device mount.
Linking between a zone file inode and its zone information is done by
setting the inode i_private field to point to a struct zonefs_zone.
Using the i_private pointer avoids the need for adding a pointer in
struct zonefs_inode_info. Beside the vfs inode, this structure is
reduced to a mutex and a write open counter.
One struct zonefs_zone is created per file inode on mount. These
structures are organized in an array using the new struct
zonefs_zone_group data structure to represent zone groups. The
zonefs_zone arrays are indexed per file number (the index of a struct
zonefs_zone in its array directly gives the file number/name for that
zone file inode).
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Stable-dep-of: 88b170088ad2 ("zonefs: Fix error message in zonefs_file_dio_append()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
fs/zonefs/file.c | 99 ++++----
fs/zonefs/super.c | 571 +++++++++++++++++++++++++++------------------
fs/zonefs/trace.h | 20 +-
fs/zonefs/zonefs.h | 63 +++--
4 files changed, 449 insertions(+), 304 deletions(-)
diff --git a/fs/zonefs/file.c b/fs/zonefs/file.c
index 64873d31..738b0e28 100644
--- a/fs/zonefs/file.c
+++ b/fs/zonefs/file.c
@@ -29,6 +29,7 @@ static int zonefs_read_iomap_begin(struct inode *inode, loff_t offset,
struct iomap *iomap, struct iomap *srcmap)
{
struct zonefs_inode_info *zi = ZONEFS_I(inode);
+ struct zonefs_zone *z = zonefs_inode_zone(inode);
struct super_block *sb = inode->i_sb;
loff_t isize;
@@ -46,7 +47,7 @@ static int zonefs_read_iomap_begin(struct inode *inode, loff_t offset,
iomap->length = length;
} else {
iomap->type = IOMAP_MAPPED;
- iomap->addr = (zi->i_zsector << SECTOR_SHIFT) + iomap->offset;
+ iomap->addr = (z->z_sector << SECTOR_SHIFT) + iomap->offset;
iomap->length = isize - iomap->offset;
}
mutex_unlock(&zi->i_truncate_mutex);
@@ -65,11 +66,12 @@ static int zonefs_write_iomap_begin(struct inode *inode, loff_t offset,
struct iomap *iomap, struct iomap *srcmap)
{
struct zonefs_inode_info *zi = ZONEFS_I(inode);
+ struct zonefs_zone *z = zonefs_inode_zone(inode);
struct super_block *sb = inode->i_sb;
loff_t isize;
/* All write I/Os should always be within the file maximum size */
- if (WARN_ON_ONCE(offset + length > zi->i_max_size))
+ if (WARN_ON_ONCE(offset + length > z->z_capacity))
return -EIO;
/*
@@ -77,7 +79,7 @@ static int zonefs_write_iomap_begin(struct inode *inode, loff_t offset,
* checked when writes are issued, so warn if we see a page writeback
* operation.
*/
- if (WARN_ON_ONCE(zonefs_zone_is_seq(zi) && !(flags & IOMAP_DIRECT)))
+ if (WARN_ON_ONCE(zonefs_zone_is_seq(z) && !(flags & IOMAP_DIRECT)))
return -EIO;
/*
@@ -88,11 +90,11 @@ static int zonefs_write_iomap_begin(struct inode *inode, loff_t offset,
mutex_lock(&zi->i_truncate_mutex);
iomap->bdev = inode->i_sb->s_bdev;
iomap->offset = ALIGN_DOWN(offset, sb->s_blocksize);
- iomap->addr = (zi->i_zsector << SECTOR_SHIFT) + iomap->offset;
+ iomap->addr = (z->z_sector << SECTOR_SHIFT) + iomap->offset;
isize = i_size_read(inode);
if (iomap->offset >= isize) {
iomap->type = IOMAP_UNWRITTEN;
- iomap->length = zi->i_max_size - iomap->offset;
+ iomap->length = z->z_capacity - iomap->offset;
} else {
iomap->type = IOMAP_MAPPED;
iomap->length = isize - iomap->offset;
@@ -125,9 +127,9 @@ static void zonefs_readahead(struct readahead_control *rac)
static int zonefs_write_map_blocks(struct iomap_writepage_ctx *wpc,
struct inode *inode, loff_t offset)
{
- struct zonefs_inode_info *zi = ZONEFS_I(inode);
+ struct zonefs_zone *z = zonefs_inode_zone(inode);
- if (WARN_ON_ONCE(zonefs_zone_is_seq(zi)))
+ if (WARN_ON_ONCE(zonefs_zone_is_seq(z)))
return -EIO;
if (WARN_ON_ONCE(offset >= i_size_read(inode)))
return -EIO;
@@ -137,7 +139,8 @@ static int zonefs_write_map_blocks(struct iomap_writepage_ctx *wpc,
offset < wpc->iomap.offset + wpc->iomap.length)
return 0;
- return zonefs_write_iomap_begin(inode, offset, zi->i_max_size - offset,
+ return zonefs_write_iomap_begin(inode, offset,
+ z->z_capacity - offset,
IOMAP_WRITE, &wpc->iomap, NULL);
}
@@ -185,6 +188,7 @@ const struct address_space_operations zonefs_file_aops = {
int zonefs_file_truncate(struct inode *inode, loff_t isize)
{
struct zonefs_inode_info *zi = ZONEFS_I(inode);
+ struct zonefs_zone *z = zonefs_inode_zone(inode);
loff_t old_isize;
enum req_op op;
int ret = 0;
@@ -194,12 +198,12 @@ int zonefs_file_truncate(struct inode *inode, loff_t isize)
* only down to a 0 size, which is equivalent to a zone reset, and to
* the maximum file size, which is equivalent to a zone finish.
*/
- if (!zonefs_zone_is_seq(zi))
+ if (!zonefs_zone_is_seq(z))
return -EPERM;
if (!isize)
op = REQ_OP_ZONE_RESET;
- else if (isize == zi->i_max_size)
+ else if (isize == z->z_capacity)
op = REQ_OP_ZONE_FINISH;
else
return -EPERM;
@@ -216,7 +220,7 @@ int zonefs_file_truncate(struct inode *inode, loff_t isize)
if (isize == old_isize)
goto unlock;
- ret = zonefs_zone_mgmt(inode, op);
+ ret = zonefs_inode_zone_mgmt(inode, op);
if (ret)
goto unlock;
@@ -224,7 +228,7 @@ int zonefs_file_truncate(struct inode *inode, loff_t isize)
* If the mount option ZONEFS_MNTOPT_EXPLICIT_OPEN is set,
* take care of open zones.
*/
- if (zi->i_flags & ZONEFS_ZONE_OPEN) {
+ if (z->z_flags & ZONEFS_ZONE_OPEN) {
/*
* Truncating a zone to EMPTY or FULL is the equivalent of
* closing the zone. For a truncation to 0, we need to
@@ -234,15 +238,15 @@ int zonefs_file_truncate(struct inode *inode, loff_t isize)
* the open flag.
*/
if (!isize)
- ret = zonefs_zone_mgmt(inode, REQ_OP_ZONE_OPEN);
+ ret = zonefs_inode_zone_mgmt(inode, REQ_OP_ZONE_OPEN);
else
- zi->i_flags &= ~ZONEFS_ZONE_OPEN;
+ z->z_flags &= ~ZONEFS_ZONE_OPEN;
}
zonefs_update_stats(inode, isize);
truncate_setsize(inode, isize);
- zi->i_wpoffset = isize;
- zonefs_account_active(inode);
+ z->z_wpoffset = isize;
+ zonefs_inode_account_active(inode);
unlock:
mutex_unlock(&zi->i_truncate_mutex);
@@ -349,7 +353,7 @@ static int zonefs_file_write_dio_end_io(struct kiocb *iocb, ssize_t size,
return error;
}
- if (size && zonefs_zone_is_seq(zi)) {
+ if (size && zonefs_inode_is_seq(inode)) {
/*
* Note that we may be seeing completions out of order,
* but that is not a problem since a write completed
@@ -375,7 +379,7 @@ static const struct iomap_dio_ops zonefs_write_dio_ops = {
static ssize_t zonefs_file_dio_append(struct kiocb *iocb, struct iov_iter *from)
{
struct inode *inode = file_inode(iocb->ki_filp);
- struct zonefs_inode_info *zi = ZONEFS_I(inode);
+ struct zonefs_zone *z = zonefs_inode_zone(inode);
struct block_device *bdev = inode->i_sb->s_bdev;
unsigned int max = bdev_max_zone_append_sectors(bdev);
struct bio *bio;
@@ -392,7 +396,7 @@ static ssize_t zonefs_file_dio_append(struct kiocb *iocb, struct iov_iter *from)
bio = bio_alloc(bdev, nr_pages,
REQ_OP_ZONE_APPEND | REQ_SYNC | REQ_IDLE, GFP_NOFS);
- bio->bi_iter.bi_sector = zi->i_zsector;
+ bio->bi_iter.bi_sector = z->z_sector;
bio->bi_ioprio = iocb->ki_ioprio;
if (iocb_is_dsync(iocb))
bio->bi_opf |= REQ_FUA;
@@ -417,12 +421,12 @@ static ssize_t zonefs_file_dio_append(struct kiocb *iocb, struct iov_iter *from)
*/
if (!ret) {
sector_t wpsector =
- zi->i_zsector + (zi->i_wpoffset >> SECTOR_SHIFT);
+ z->z_sector + (z->z_wpoffset >> SECTOR_SHIFT);
if (bio->bi_iter.bi_sector != wpsector) {
zonefs_warn(inode->i_sb,
"Corrupted write pointer %llu for zone at %llu\n",
- wpsector, zi->i_zsector);
+ wpsector, z->z_sector);
ret = -EIO;
}
}
@@ -450,9 +454,9 @@ static loff_t zonefs_write_check_limits(struct file *file, loff_t pos,
loff_t count)
{
struct inode *inode = file_inode(file);
- struct zonefs_inode_info *zi = ZONEFS_I(inode);
+ struct zonefs_zone *z = zonefs_inode_zone(inode);
loff_t limit = rlimit(RLIMIT_FSIZE);
- loff_t max_size = zi->i_max_size;
+ loff_t max_size = z->z_capacity;
if (limit != RLIM_INFINITY) {
if (pos >= limit) {
@@ -476,6 +480,7 @@ static ssize_t zonefs_write_checks(struct kiocb *iocb, struct iov_iter *from)
struct file *file = iocb->ki_filp;
struct inode *inode = file_inode(file);
struct zonefs_inode_info *zi = ZONEFS_I(inode);
+ struct zonefs_zone *z = zonefs_inode_zone(inode);
loff_t count;
if (IS_SWAPFILE(inode))
@@ -488,10 +493,10 @@ static ssize_t zonefs_write_checks(struct kiocb *iocb, struct iov_iter *from)
return -EINVAL;
if (iocb->ki_flags & IOCB_APPEND) {
- if (zonefs_zone_is_cnv(zi))
+ if (zonefs_zone_is_cnv(z))
return -EINVAL;
mutex_lock(&zi->i_truncate_mutex);
- iocb->ki_pos = zi->i_wpoffset;
+ iocb->ki_pos = z->z_wpoffset;
mutex_unlock(&zi->i_truncate_mutex);
}
@@ -518,6 +523,7 @@ static ssize_t zonefs_file_dio_write(struct kiocb *iocb, struct iov_iter *from)
{
struct inode *inode = file_inode(iocb->ki_filp);
struct zonefs_inode_info *zi = ZONEFS_I(inode);
+ struct zonefs_zone *z = zonefs_inode_zone(inode);
struct super_block *sb = inode->i_sb;
bool sync = is_sync_kiocb(iocb);
bool append = false;
@@ -528,7 +534,7 @@ static ssize_t zonefs_file_dio_write(struct kiocb *iocb, struct iov_iter *from)
* as this can cause write reordering (e.g. the first aio gets EAGAIN
* on the inode lock but the second goes through but is now unaligned).
*/
- if (zonefs_zone_is_seq(zi) && !sync && (iocb->ki_flags & IOCB_NOWAIT))
+ if (zonefs_zone_is_seq(z) && !sync && (iocb->ki_flags & IOCB_NOWAIT))
return -EOPNOTSUPP;
if (iocb->ki_flags & IOCB_NOWAIT) {
@@ -550,9 +556,9 @@ static ssize_t zonefs_file_dio_write(struct kiocb *iocb, struct iov_iter *from)
}
/* Enforce sequential writes (append only) in sequential zones */
- if (zonefs_zone_is_seq(zi)) {
+ if (zonefs_zone_is_seq(z)) {
mutex_lock(&zi->i_truncate_mutex);
- if (iocb->ki_pos != zi->i_wpoffset) {
+ if (iocb->ki_pos != z->z_wpoffset) {
mutex_unlock(&zi->i_truncate_mutex);
ret = -EINVAL;
goto inode_unlock;
@@ -566,7 +572,7 @@ static ssize_t zonefs_file_dio_write(struct kiocb *iocb, struct iov_iter *from)
else
ret = iomap_dio_rw(iocb, from, &zonefs_write_iomap_ops,
&zonefs_write_dio_ops, 0, NULL, 0);
- if (zonefs_zone_is_seq(zi) &&
+ if (zonefs_zone_is_seq(z) &&
(ret > 0 || ret == -EIOCBQUEUED)) {
if (ret > 0)
count = ret;
@@ -577,8 +583,8 @@ static ssize_t zonefs_file_dio_write(struct kiocb *iocb, struct iov_iter *from)
* will correct it. Also do active seq file accounting.
*/
mutex_lock(&zi->i_truncate_mutex);
- zi->i_wpoffset += count;
- zonefs_account_active(inode);
+ z->z_wpoffset += count;
+ zonefs_inode_account_active(inode);
mutex_unlock(&zi->i_truncate_mutex);
}
@@ -629,6 +635,7 @@ static ssize_t zonefs_file_buffered_write(struct kiocb *iocb,
static ssize_t zonefs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
{
struct inode *inode = file_inode(iocb->ki_filp);
+ struct zonefs_zone *z = zonefs_inode_zone(inode);
if (unlikely(IS_IMMUTABLE(inode)))
return -EPERM;
@@ -636,8 +643,8 @@ static ssize_t zonefs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
if (sb_rdonly(inode->i_sb))
return -EROFS;
- /* Write operations beyond the zone size are not allowed */
- if (iocb->ki_pos >= ZONEFS_I(inode)->i_max_size)
+ /* Write operations beyond the zone capacity are not allowed */
+ if (iocb->ki_pos >= z->z_capacity)
return -EFBIG;
if (iocb->ki_flags & IOCB_DIRECT) {
@@ -669,6 +676,7 @@ static ssize_t zonefs_file_read_iter(struct kiocb *iocb, struct iov_iter *to)
{
struct inode *inode = file_inode(iocb->ki_filp);
struct zonefs_inode_info *zi = ZONEFS_I(inode);
+ struct zonefs_zone *z = zonefs_inode_zone(inode);
struct super_block *sb = inode->i_sb;
loff_t isize;
ssize_t ret;
@@ -677,7 +685,7 @@ static ssize_t zonefs_file_read_iter(struct kiocb *iocb, struct iov_iter *to)
if (unlikely(IS_IMMUTABLE(inode) && !(inode->i_mode & 0777)))
return -EPERM;
- if (iocb->ki_pos >= zi->i_max_size)
+ if (iocb->ki_pos >= z->z_capacity)
return 0;
if (iocb->ki_flags & IOCB_NOWAIT) {
@@ -738,6 +746,7 @@ static inline bool zonefs_seq_file_need_wro(struct inode *inode,
static int zonefs_seq_file_write_open(struct inode *inode)
{
struct zonefs_inode_info *zi = ZONEFS_I(inode);
+ struct zonefs_zone *z = zonefs_inode_zone(inode);
int ret = 0;
mutex_lock(&zi->i_truncate_mutex);
@@ -755,14 +764,15 @@ static int zonefs_seq_file_write_open(struct inode *inode)
goto unlock;
}
- if (i_size_read(inode) < zi->i_max_size) {
- ret = zonefs_zone_mgmt(inode, REQ_OP_ZONE_OPEN);
+ if (i_size_read(inode) < z->z_capacity) {
+ ret = zonefs_inode_zone_mgmt(inode,
+ REQ_OP_ZONE_OPEN);
if (ret) {
atomic_dec(&sbi->s_wro_seq_files);
goto unlock;
}
- zi->i_flags |= ZONEFS_ZONE_OPEN;
- zonefs_account_active(inode);
+ z->z_flags |= ZONEFS_ZONE_OPEN;
+ zonefs_inode_account_active(inode);
}
}
}
@@ -792,6 +802,7 @@ static int zonefs_file_open(struct inode *inode, struct file *file)
static void zonefs_seq_file_write_close(struct inode *inode)
{
struct zonefs_inode_info *zi = ZONEFS_I(inode);
+ struct zonefs_zone *z = zonefs_inode_zone(inode);
struct super_block *sb = inode->i_sb;
struct zonefs_sb_info *sbi = ZONEFS_SB(sb);
int ret = 0;
@@ -807,8 +818,8 @@ static void zonefs_seq_file_write_close(struct inode *inode)
* its maximum size or it was fully written). For this case, we only
* need to decrement the write open count.
*/
- if (zi->i_flags & ZONEFS_ZONE_OPEN) {
- ret = zonefs_zone_mgmt(inode, REQ_OP_ZONE_CLOSE);
+ if (z->z_flags & ZONEFS_ZONE_OPEN) {
+ ret = zonefs_inode_zone_mgmt(inode, REQ_OP_ZONE_CLOSE);
if (ret) {
__zonefs_io_error(inode, false);
/*
@@ -817,11 +828,11 @@ static void zonefs_seq_file_write_close(struct inode *inode)
* exhausted). So take preventive action by remounting
* read-only.
*/
- if (zi->i_flags & ZONEFS_ZONE_OPEN &&
+ if (z->z_flags & ZONEFS_ZONE_OPEN &&
!(sb->s_flags & SB_RDONLY)) {
zonefs_warn(sb,
"closing zone at %llu failed %d\n",
- zi->i_zsector, ret);
+ z->z_sector, ret);
zonefs_warn(sb,
"remounting filesystem read-only\n");
sb->s_flags |= SB_RDONLY;
@@ -829,8 +840,8 @@ static void zonefs_seq_file_write_close(struct inode *inode)
goto unlock;
}
- zi->i_flags &= ~ZONEFS_ZONE_OPEN;
- zonefs_account_active(inode);
+ z->z_flags &= ~ZONEFS_ZONE_OPEN;
+ zonefs_inode_account_active(inode);
}
atomic_dec(&sbi->s_wro_seq_files);
diff --git a/fs/zonefs/super.c b/fs/zonefs/super.c
index a4af29dc..270ded20 100644
--- a/fs/zonefs/super.c
+++ b/fs/zonefs/super.c
@@ -28,33 +28,47 @@
#include "trace.h"
/*
- * Manage the active zone count. Called with zi->i_truncate_mutex held.
+ * Get the name of a zone group directory.
*/
-void zonefs_account_active(struct inode *inode)
+static const char *zonefs_zgroup_name(enum zonefs_ztype ztype)
{
- struct zonefs_sb_info *sbi = ZONEFS_SB(inode->i_sb);
- struct zonefs_inode_info *zi = ZONEFS_I(inode);
+ switch (ztype) {
+ case ZONEFS_ZTYPE_CNV:
+ return "cnv";
+ case ZONEFS_ZTYPE_SEQ:
+ return "seq";
+ default:
+ WARN_ON_ONCE(1);
+ return "???";
+ }
+}
- lockdep_assert_held(&zi->i_truncate_mutex);
+/*
+ * Manage the active zone count.
+ */
+static void zonefs_account_active(struct super_block *sb,
+ struct zonefs_zone *z)
+{
+ struct zonefs_sb_info *sbi = ZONEFS_SB(sb);
- if (zonefs_zone_is_cnv(zi))
+ if (zonefs_zone_is_cnv(z))
return;
/*
* For zones that transitioned to the offline or readonly condition,
* we only need to clear the active state.
*/
- if (zi->i_flags & (ZONEFS_ZONE_OFFLINE | ZONEFS_ZONE_READONLY))
+ if (z->z_flags & (ZONEFS_ZONE_OFFLINE | ZONEFS_ZONE_READONLY))
goto out;
/*
* If the zone is active, that is, if it is explicitly open or
* partially written, check if it was already accounted as active.
*/
- if ((zi->i_flags & ZONEFS_ZONE_OPEN) ||
- (zi->i_wpoffset > 0 && zi->i_wpoffset < zi->i_max_size)) {
- if (!(zi->i_flags & ZONEFS_ZONE_ACTIVE)) {
- zi->i_flags |= ZONEFS_ZONE_ACTIVE;
+ if ((z->z_flags & ZONEFS_ZONE_OPEN) ||
+ (z->z_wpoffset > 0 && z->z_wpoffset < z->z_capacity)) {
+ if (!(z->z_flags & ZONEFS_ZONE_ACTIVE)) {
+ z->z_flags |= ZONEFS_ZONE_ACTIVE;
atomic_inc(&sbi->s_active_seq_files);
}
return;
@@ -62,18 +76,29 @@ void zonefs_account_active(struct inode *inode)
out:
/* The zone is not active. If it was, update the active count */
- if (zi->i_flags & ZONEFS_ZONE_ACTIVE) {
- zi->i_flags &= ~ZONEFS_ZONE_ACTIVE;
+ if (z->z_flags & ZONEFS_ZONE_ACTIVE) {
+ z->z_flags &= ~ZONEFS_ZONE_ACTIVE;
atomic_dec(&sbi->s_active_seq_files);
}
}
-int zonefs_zone_mgmt(struct inode *inode, enum req_op op)
+/*
+ * Manage the active zone count. Called with zi->i_truncate_mutex held.
+ */
+void zonefs_inode_account_active(struct inode *inode)
{
- struct zonefs_inode_info *zi = ZONEFS_I(inode);
- int ret;
+ lockdep_assert_held(&ZONEFS_I(inode)->i_truncate_mutex);
- lockdep_assert_held(&zi->i_truncate_mutex);
+ return zonefs_account_active(inode->i_sb, zonefs_inode_zone(inode));
+}
+
+/*
+ * Execute a zone management operation.
+ */
+static int zonefs_zone_mgmt(struct super_block *sb,
+ struct zonefs_zone *z, enum req_op op)
+{
+ int ret;
/*
* With ZNS drives, closing an explicitly open zone that has not been
@@ -83,37 +108,45 @@ int zonefs_zone_mgmt(struct inode *inode, enum req_op op)
* are exceeded, make sure that the zone does not remain active by
* resetting it.
*/
- if (op == REQ_OP_ZONE_CLOSE && !zi->i_wpoffset)
+ if (op == REQ_OP_ZONE_CLOSE && !z->z_wpoffset)
op = REQ_OP_ZONE_RESET;
- trace_zonefs_zone_mgmt(inode, op);
- ret = blkdev_zone_mgmt(inode->i_sb->s_bdev, op, zi->i_zsector,
- zi->i_zone_size >> SECTOR_SHIFT, GFP_NOFS);
+ trace_zonefs_zone_mgmt(sb, z, op);
+ ret = blkdev_zone_mgmt(sb->s_bdev, op, z->z_sector,
+ z->z_size >> SECTOR_SHIFT, GFP_NOFS);
if (ret) {
- zonefs_err(inode->i_sb,
+ zonefs_err(sb,
"Zone management operation %s at %llu failed %d\n",
- blk_op_str(op), zi->i_zsector, ret);
+ blk_op_str(op), z->z_sector, ret);
return ret;
}
return 0;
}
+int zonefs_inode_zone_mgmt(struct inode *inode, enum req_op op)
+{
+ lockdep_assert_held(&ZONEFS_I(inode)->i_truncate_mutex);
+
+ return zonefs_zone_mgmt(inode->i_sb, zonefs_inode_zone(inode), op);
+}
+
void zonefs_i_size_write(struct inode *inode, loff_t isize)
{
- struct zonefs_inode_info *zi = ZONEFS_I(inode);
+ struct zonefs_zone *z = zonefs_inode_zone(inode);
i_size_write(inode, isize);
+
/*
* A full zone is no longer open/active and does not need
* explicit closing.
*/
- if (isize >= zi->i_max_size) {
+ if (isize >= z->z_capacity) {
struct zonefs_sb_info *sbi = ZONEFS_SB(inode->i_sb);
- if (zi->i_flags & ZONEFS_ZONE_ACTIVE)
+ if (z->z_flags & ZONEFS_ZONE_ACTIVE)
atomic_dec(&sbi->s_active_seq_files);
- zi->i_flags &= ~(ZONEFS_ZONE_OPEN | ZONEFS_ZONE_ACTIVE);
+ z->z_flags &= ~(ZONEFS_ZONE_OPEN | ZONEFS_ZONE_ACTIVE);
}
}
@@ -150,20 +183,18 @@ void zonefs_update_stats(struct inode *inode, loff_t new_isize)
}
/*
- * Check a zone condition and adjust its file inode access permissions for
- * offline and readonly zones. Return the inode size corresponding to the
- * amount of readable data in the zone.
+ * Check a zone condition. Return the amount of written (and still readable)
+ * data in the zone.
*/
-static loff_t zonefs_check_zone_condition(struct inode *inode,
+static loff_t zonefs_check_zone_condition(struct super_block *sb,
+ struct zonefs_zone *z,
struct blk_zone *zone)
{
- struct zonefs_inode_info *zi = ZONEFS_I(inode);
-
switch (zone->cond) {
case BLK_ZONE_COND_OFFLINE:
- zonefs_warn(inode->i_sb, "inode %lu: offline zone\n",
- inode->i_ino);
- zi->i_flags |= ZONEFS_ZONE_OFFLINE;
+ zonefs_warn(sb, "Zone %llu: offline zone\n",
+ z->z_sector);
+ z->z_flags |= ZONEFS_ZONE_OFFLINE;
return 0;
case BLK_ZONE_COND_READONLY:
/*
@@ -174,18 +205,18 @@ static loff_t zonefs_check_zone_condition(struct inode *inode,
* the inode size as it was when last updated so that the user
* can recover data.
*/
- zonefs_warn(inode->i_sb, "inode %lu: read-only zone\n",
- inode->i_ino);
- zi->i_flags |= ZONEFS_ZONE_READONLY;
- if (zonefs_zone_is_cnv(zi))
- return zi->i_max_size;
- return zi->i_wpoffset;
+ zonefs_warn(sb, "Zone %llu: read-only zone\n",
+ z->z_sector);
+ z->z_flags |= ZONEFS_ZONE_READONLY;
+ if (zonefs_zone_is_cnv(z))
+ return z->z_capacity;
+ return z->z_wpoffset;
case BLK_ZONE_COND_FULL:
/* The write pointer of full zones is invalid. */
- return zi->i_max_size;
+ return z->z_capacity;
default:
- if (zonefs_zone_is_cnv(zi))
- return zi->i_max_size;
+ if (zonefs_zone_is_cnv(z))
+ return z->z_capacity;
return (zone->wp - zone->start) << SECTOR_SHIFT;
}
}
@@ -196,22 +227,22 @@ static loff_t zonefs_check_zone_condition(struct inode *inode,
*/
static void zonefs_inode_update_mode(struct inode *inode)
{
- struct zonefs_inode_info *zi = ZONEFS_I(inode);
+ struct zonefs_zone *z = zonefs_inode_zone(inode);
- if (zi->i_flags & ZONEFS_ZONE_OFFLINE) {
+ if (z->z_flags & ZONEFS_ZONE_OFFLINE) {
/* Offline zones cannot be read nor written */
inode->i_flags |= S_IMMUTABLE;
inode->i_mode &= ~0777;
- } else if (zi->i_flags & ZONEFS_ZONE_READONLY) {
+ } else if (z->z_flags & ZONEFS_ZONE_READONLY) {
/* Readonly zones cannot be written */
inode->i_flags |= S_IMMUTABLE;
- if (zi->i_flags & ZONEFS_ZONE_INIT_MODE)
+ if (z->z_flags & ZONEFS_ZONE_INIT_MODE)
inode->i_mode &= ~0777;
else
inode->i_mode &= ~0222;
}
- zi->i_flags &= ~ZONEFS_ZONE_INIT_MODE;
+ z->z_flags &= ~ZONEFS_ZONE_INIT_MODE;
}
struct zonefs_ioerr_data {
@@ -224,7 +255,7 @@ static int zonefs_io_error_cb(struct blk_zone *zone, unsigned int idx,
{
struct zonefs_ioerr_data *err = data;
struct inode *inode = err->inode;
- struct zonefs_inode_info *zi = ZONEFS_I(inode);
+ struct zonefs_zone *z = zonefs_inode_zone(inode);
struct super_block *sb = inode->i_sb;
struct zonefs_sb_info *sbi = ZONEFS_SB(sb);
loff_t isize, data_size;
@@ -235,9 +266,9 @@ static int zonefs_io_error_cb(struct blk_zone *zone, unsigned int idx,
* as there is no inconsistency between the inode size and the amount of
* data writen in the zone (data_size).
*/
- data_size = zonefs_check_zone_condition(inode, zone);
+ data_size = zonefs_check_zone_condition(sb, z, zone);
isize = i_size_read(inode);
- if (!(zi->i_flags & (ZONEFS_ZONE_READONLY | ZONEFS_ZONE_OFFLINE)) &&
+ if (!(z->z_flags & (ZONEFS_ZONE_READONLY | ZONEFS_ZONE_OFFLINE)) &&
!err->write && isize == data_size)
return 0;
@@ -260,8 +291,9 @@ static int zonefs_io_error_cb(struct blk_zone *zone, unsigned int idx,
* In all cases, warn about inode size inconsistency and handle the
* IO error according to the zone condition and to the mount options.
*/
- if (zonefs_zone_is_seq(zi) && isize != data_size)
- zonefs_warn(sb, "inode %lu: invalid size %lld (should be %lld)\n",
+ if (zonefs_zone_is_seq(z) && isize != data_size)
+ zonefs_warn(sb,
+ "inode %lu: invalid size %lld (should be %lld)\n",
inode->i_ino, isize, data_size);
/*
@@ -270,20 +302,20 @@ static int zonefs_io_error_cb(struct blk_zone *zone, unsigned int idx,
* zone condition to read-only and offline respectively, as if the
* condition was signaled by the hardware.
*/
- if ((zi->i_flags & ZONEFS_ZONE_OFFLINE) ||
+ if ((z->z_flags & ZONEFS_ZONE_OFFLINE) ||
(sbi->s_mount_opts & ZONEFS_MNTOPT_ERRORS_ZOL)) {
zonefs_warn(sb, "inode %lu: read/write access disabled\n",
inode->i_ino);
- if (!(zi->i_flags & ZONEFS_ZONE_OFFLINE))
- zi->i_flags |= ZONEFS_ZONE_OFFLINE;
+ if (!(z->z_flags & ZONEFS_ZONE_OFFLINE))
+ z->z_flags |= ZONEFS_ZONE_OFFLINE;
zonefs_inode_update_mode(inode);
data_size = 0;
- } else if ((zi->i_flags & ZONEFS_ZONE_READONLY) ||
+ } else if ((z->z_flags & ZONEFS_ZONE_READONLY) ||
(sbi->s_mount_opts & ZONEFS_MNTOPT_ERRORS_ZRO)) {
zonefs_warn(sb, "inode %lu: write access disabled\n",
inode->i_ino);
- if (!(zi->i_flags & ZONEFS_ZONE_READONLY))
- zi->i_flags |= ZONEFS_ZONE_READONLY;
+ if (!(z->z_flags & ZONEFS_ZONE_READONLY))
+ z->z_flags |= ZONEFS_ZONE_READONLY;
zonefs_inode_update_mode(inode);
data_size = isize;
} else if (sbi->s_mount_opts & ZONEFS_MNTOPT_ERRORS_RO &&
@@ -299,8 +331,8 @@ static int zonefs_io_error_cb(struct blk_zone *zone, unsigned int idx,
* close of the zone when the inode file is closed.
*/
if ((sbi->s_mount_opts & ZONEFS_MNTOPT_EXPLICIT_OPEN) &&
- (zi->i_flags & (ZONEFS_ZONE_READONLY | ZONEFS_ZONE_OFFLINE)))
- zi->i_flags &= ~ZONEFS_ZONE_OPEN;
+ (z->z_flags & (ZONEFS_ZONE_READONLY | ZONEFS_ZONE_OFFLINE)))
+ z->z_flags &= ~ZONEFS_ZONE_OPEN;
/*
* If error=remount-ro was specified, any error result in remounting
@@ -317,8 +349,8 @@ static int zonefs_io_error_cb(struct blk_zone *zone, unsigned int idx,
*/
zonefs_update_stats(inode, data_size);
zonefs_i_size_write(inode, data_size);
- zi->i_wpoffset = data_size;
- zonefs_account_active(inode);
+ z->z_wpoffset = data_size;
+ zonefs_inode_account_active(inode);
return 0;
}
@@ -332,7 +364,7 @@ static int zonefs_io_error_cb(struct blk_zone *zone, unsigned int idx,
*/
void __zonefs_io_error(struct inode *inode, bool write)
{
- struct zonefs_inode_info *zi = ZONEFS_I(inode);
+ struct zonefs_zone *z = zonefs_inode_zone(inode);
struct super_block *sb = inode->i_sb;
struct zonefs_sb_info *sbi = ZONEFS_SB(sb);
unsigned int noio_flag;
@@ -348,8 +380,8 @@ void __zonefs_io_error(struct inode *inode, bool write)
* files with aggregated conventional zones, for which the inode zone
* size is always larger than the device zone size.
*/
- if (zi->i_zone_size > bdev_zone_sectors(sb->s_bdev))
- nr_zones = zi->i_zone_size >>
+ if (z->z_size > bdev_zone_sectors(sb->s_bdev))
+ nr_zones = z->z_size >>
(sbi->s_zone_sectors_shift + SECTOR_SHIFT);
/*
@@ -361,7 +393,7 @@ void __zonefs_io_error(struct inode *inode, bool write)
* the GFP_NOIO context avoids both problems.
*/
noio_flag = memalloc_noio_save();
- ret = blkdev_report_zones(sb->s_bdev, zi->i_zsector, nr_zones,
+ ret = blkdev_report_zones(sb->s_bdev, z->z_sector, nr_zones,
zonefs_io_error_cb, &err);
if (ret != nr_zones)
zonefs_err(sb, "Get inode %lu zone information failed %d\n",
@@ -381,9 +413,7 @@ static struct inode *zonefs_alloc_inode(struct super_block *sb)
inode_init_once(&zi->i_vnode);
mutex_init(&zi->i_truncate_mutex);
- zi->i_wpoffset = 0;
zi->i_wr_refcnt = 0;
- zi->i_flags = 0;
return &zi->i_vnode;
}
@@ -416,8 +446,8 @@ static int zonefs_statfs(struct dentry *dentry, struct kstatfs *buf)
buf->f_bavail = buf->f_bfree;
for (t = 0; t < ZONEFS_ZTYPE_MAX; t++) {
- if (sbi->s_nr_files[t])
- buf->f_files += sbi->s_nr_files[t] + 1;
+ if (sbi->s_zgroup[t].g_nr_zones)
+ buf->f_files += sbi->s_zgroup[t].g_nr_zones + 1;
}
buf->f_ffree = 0;
@@ -557,11 +587,11 @@ static const struct inode_operations zonefs_dir_inode_operations = {
};
static void zonefs_init_dir_inode(struct inode *parent, struct inode *inode,
- enum zonefs_ztype type)
+ enum zonefs_ztype ztype)
{
struct super_block *sb = parent->i_sb;
- inode->i_ino = bdev_nr_zones(sb->s_bdev) + type + 1;
+ inode->i_ino = bdev_nr_zones(sb->s_bdev) + ztype + 1;
inode_init_owner(&init_user_ns, inode, parent, S_IFDIR | 0555);
inode->i_op = &zonefs_dir_inode_operations;
inode->i_fop = &simple_dir_operations;
@@ -573,79 +603,34 @@ static const struct inode_operations zonefs_file_inode_operations = {
.setattr = zonefs_inode_setattr,
};
-static int zonefs_init_file_inode(struct inode *inode, struct blk_zone *zone,
- enum zonefs_ztype type)
+static void zonefs_init_file_inode(struct inode *inode,
+ struct zonefs_zone *z)
{
struct super_block *sb = inode->i_sb;
struct zonefs_sb_info *sbi = ZONEFS_SB(sb);
- struct zonefs_inode_info *zi = ZONEFS_I(inode);
- int ret = 0;
-
- inode->i_ino = zone->start >> sbi->s_zone_sectors_shift;
- inode->i_mode = S_IFREG | sbi->s_perm;
- if (type == ZONEFS_ZTYPE_CNV)
- zi->i_flags |= ZONEFS_ZONE_CNV;
-
- zi->i_zsector = zone->start;
- zi->i_zone_size = zone->len << SECTOR_SHIFT;
- if (zi->i_zone_size > bdev_zone_sectors(sb->s_bdev) << SECTOR_SHIFT &&
- !(sbi->s_features & ZONEFS_F_AGGRCNV)) {
- zonefs_err(sb,
- "zone size %llu doesn't match device's zone sectors %llu\n",
- zi->i_zone_size,
- bdev_zone_sectors(sb->s_bdev) << SECTOR_SHIFT);
- return -EINVAL;
- }
-
- zi->i_max_size = min_t(loff_t, MAX_LFS_FILESIZE,
- zone->capacity << SECTOR_SHIFT);
- zi->i_wpoffset = zonefs_check_zone_condition(inode, zone);
+ inode->i_private = z;
+ inode->i_ino = z->z_sector >> sbi->s_zone_sectors_shift;
+ inode->i_mode = S_IFREG | sbi->s_perm;
inode->i_uid = sbi->s_uid;
inode->i_gid = sbi->s_gid;
- inode->i_size = zi->i_wpoffset;
- inode->i_blocks = zi->i_max_size >> SECTOR_SHIFT;
+ inode->i_size = z->z_wpoffset;
+ inode->i_blocks = z->z_capacity >> SECTOR_SHIFT;
inode->i_op = &zonefs_file_inode_operations;
inode->i_fop = &zonefs_file_operations;
inode->i_mapping->a_ops = &zonefs_file_aops;
/* Update the inode access rights depending on the zone condition */
- zi->i_flags |= ZONEFS_ZONE_INIT_MODE;
+ z->z_flags |= ZONEFS_ZONE_INIT_MODE;
zonefs_inode_update_mode(inode);
-
- sb->s_maxbytes = max(zi->i_max_size, sb->s_maxbytes);
- sbi->s_blocks += zi->i_max_size >> sb->s_blocksize_bits;
- sbi->s_used_blocks += zi->i_wpoffset >> sb->s_blocksize_bits;
-
- mutex_lock(&zi->i_truncate_mutex);
-
- /*
- * For sequential zones, make sure that any open zone is closed first
- * to ensure that the initial number of open zones is 0, in sync with
- * the open zone accounting done when the mount option
- * ZONEFS_MNTOPT_EXPLICIT_OPEN is used.
- */
- if (type == ZONEFS_ZTYPE_SEQ &&
- (zone->cond == BLK_ZONE_COND_IMP_OPEN ||
- zone->cond == BLK_ZONE_COND_EXP_OPEN)) {
- ret = zonefs_zone_mgmt(inode, REQ_OP_ZONE_CLOSE);
- if (ret)
- goto unlock;
- }
-
- zonefs_account_active(inode);
-
-unlock:
- mutex_unlock(&zi->i_truncate_mutex);
-
- return ret;
}
static struct dentry *zonefs_create_inode(struct dentry *parent,
- const char *name, struct blk_zone *zone,
- enum zonefs_ztype type)
+ const char *name,
+ struct zonefs_zone *z,
+ enum zonefs_ztype ztype)
{
struct inode *dir = d_inode(parent);
struct dentry *dentry;
@@ -661,15 +646,10 @@ static struct dentry *zonefs_create_inode(struct dentry *parent,
goto dput;
inode->i_ctime = inode->i_mtime = inode->i_atime = dir->i_ctime;
- if (zone) {
- ret = zonefs_init_file_inode(inode, zone, type);
- if (ret) {
- iput(inode);
- goto dput;
- }
- } else {
- zonefs_init_dir_inode(dir, inode, type);
- }
+ if (z)
+ zonefs_init_file_inode(inode, z);
+ else
+ zonefs_init_dir_inode(dir, inode, ztype);
d_add(dentry, inode);
dir->i_size++;
@@ -685,100 +665,51 @@ static struct dentry *zonefs_create_inode(struct dentry *parent,
struct zonefs_zone_data {
struct super_block *sb;
unsigned int nr_zones[ZONEFS_ZTYPE_MAX];
+ sector_t cnv_zone_start;
struct blk_zone *zones;
};
/*
- * Create a zone group and populate it with zone files.
+ * Create the inodes for a zone group.
*/
-static int zonefs_create_zgroup(struct zonefs_zone_data *zd,
- enum zonefs_ztype type)
+static int zonefs_create_zgroup_inodes(struct super_block *sb,
+ enum zonefs_ztype ztype)
{
- struct super_block *sb = zd->sb;
struct zonefs_sb_info *sbi = ZONEFS_SB(sb);
- struct blk_zone *zone, *next, *end;
- const char *zgroup_name;
- char *file_name;
+ struct zonefs_zone_group *zgroup = &sbi->s_zgroup[ztype];
struct dentry *dir, *dent;
- unsigned int n = 0;
- int ret;
+ char *file_name;
+ int i, ret = 0;
+
+ if (!zgroup)
+ return -ENOMEM;
/* If the group is empty, there is nothing to do */
- if (!zd->nr_zones[type])
+ if (!zgroup->g_nr_zones)
return 0;
file_name = kmalloc(ZONEFS_NAME_MAX, GFP_KERNEL);
if (!file_name)
return -ENOMEM;
- if (type == ZONEFS_ZTYPE_CNV)
- zgroup_name = "cnv";
- else
- zgroup_name = "seq";
-
- dir = zonefs_create_inode(sb->s_root, zgroup_name, NULL, type);
+ dir = zonefs_create_inode(sb->s_root, zonefs_zgroup_name(ztype),
+ NULL, ztype);
if (IS_ERR(dir)) {
ret = PTR_ERR(dir);
goto free;
}
- /*
- * The first zone contains the super block: skip it.
- */
- end = zd->zones + bdev_nr_zones(sb->s_bdev);
- for (zone = &zd->zones[1]; zone < end; zone = next) {
-
- next = zone + 1;
- if (zonefs_zone_type(zone) != type)
- continue;
-
- /*
- * For conventional zones, contiguous zones can be aggregated
- * together to form larger files. Note that this overwrites the
- * length of the first zone of the set of contiguous zones
- * aggregated together. If one offline or read-only zone is
- * found, assume that all zones aggregated have the same
- * condition.
- */
- if (type == ZONEFS_ZTYPE_CNV &&
- (sbi->s_features & ZONEFS_F_AGGRCNV)) {
- for (; next < end; next++) {
- if (zonefs_zone_type(next) != type)
- break;
- zone->len += next->len;
- zone->capacity += next->capacity;
- if (next->cond == BLK_ZONE_COND_READONLY &&
- zone->cond != BLK_ZONE_COND_OFFLINE)
- zone->cond = BLK_ZONE_COND_READONLY;
- else if (next->cond == BLK_ZONE_COND_OFFLINE)
- zone->cond = BLK_ZONE_COND_OFFLINE;
- }
- if (zone->capacity != zone->len) {
- zonefs_err(sb, "Invalid conventional zone capacity\n");
- ret = -EINVAL;
- goto free;
- }
- }
-
- /*
- * Use the file number within its group as file name.
- */
- snprintf(file_name, ZONEFS_NAME_MAX - 1, "%u", n);
- dent = zonefs_create_inode(dir, file_name, zone, type);
+ for (i = 0; i < zgroup->g_nr_zones; i++) {
+ /* Use the zone number within its group as the file name */
+ snprintf(file_name, ZONEFS_NAME_MAX - 1, "%u", i);
+ dent = zonefs_create_inode(dir, file_name,
+ &zgroup->g_zones[i], ztype);
if (IS_ERR(dent)) {
ret = PTR_ERR(dent);
- goto free;
+ break;
}
-
- n++;
}
- zonefs_info(sb, "Zone group \"%s\" has %u file%s\n",
- zgroup_name, n, n > 1 ? "s" : "");
-
- sbi->s_nr_files[type] = n;
- ret = 0;
-
free:
kfree(file_name);
@@ -789,21 +720,38 @@ static int zonefs_get_zone_info_cb(struct blk_zone *zone, unsigned int idx,
void *data)
{
struct zonefs_zone_data *zd = data;
+ struct super_block *sb = zd->sb;
+ struct zonefs_sb_info *sbi = ZONEFS_SB(sb);
+
+ /*
+ * We do not care about the first zone: it contains the super block
+ * and not exposed as a file.
+ */
+ if (!idx)
+ return 0;
/*
- * Count the number of usable zones: the first zone at index 0 contains
- * the super block and is ignored.
+ * Count the number of zones that will be exposed as files.
+ * For sequential zones, we always have as many files as zones.
+ * FOr conventional zones, the number of files depends on if we have
+ * conventional zones aggregation enabled.
*/
switch (zone->type) {
case BLK_ZONE_TYPE_CONVENTIONAL:
- zone->wp = zone->start + zone->len;
- if (idx)
- zd->nr_zones[ZONEFS_ZTYPE_CNV]++;
+ if (sbi->s_features & ZONEFS_F_AGGRCNV) {
+ /* One file per set of contiguous conventional zones */
+ if (!(sbi->s_zgroup[ZONEFS_ZTYPE_CNV].g_nr_zones) ||
+ zone->start != zd->cnv_zone_start)
+ sbi->s_zgroup[ZONEFS_ZTYPE_CNV].g_nr_zones++;
+ zd->cnv_zone_start = zone->start + zone->len;
+ } else {
+ /* One file per zone */
+ sbi->s_zgroup[ZONEFS_ZTYPE_CNV].g_nr_zones++;
+ }
break;
case BLK_ZONE_TYPE_SEQWRITE_REQ:
case BLK_ZONE_TYPE_SEQWRITE_PREF:
- if (idx)
- zd->nr_zones[ZONEFS_ZTYPE_SEQ]++;
+ sbi->s_zgroup[ZONEFS_ZTYPE_SEQ].g_nr_zones++;
break;
default:
zonefs_err(zd->sb, "Unsupported zone type 0x%x\n",
@@ -843,11 +791,173 @@ static int zonefs_get_zone_info(struct zonefs_zone_data *zd)
return 0;
}
-static inline void zonefs_cleanup_zone_info(struct zonefs_zone_data *zd)
+static inline void zonefs_free_zone_info(struct zonefs_zone_data *zd)
{
kvfree(zd->zones);
}
+/*
+ * Create a zone group and populate it with zone files.
+ */
+static int zonefs_init_zgroup(struct super_block *sb,
+ struct zonefs_zone_data *zd,
+ enum zonefs_ztype ztype)
+{
+ struct zonefs_sb_info *sbi = ZONEFS_SB(sb);
+ struct zonefs_zone_group *zgroup = &sbi->s_zgroup[ztype];
+ struct blk_zone *zone, *next, *end;
+ struct zonefs_zone *z;
+ unsigned int n = 0;
+ int ret;
+
+ /* Allocate the zone group. If it is empty, we have nothing to do. */
+ if (!zgroup->g_nr_zones)
+ return 0;
+
+ zgroup->g_zones = kvcalloc(zgroup->g_nr_zones,
+ sizeof(struct zonefs_zone), GFP_KERNEL);
+ if (!zgroup->g_zones)
+ return -ENOMEM;
+
+ /*
+ * Initialize the zone groups using the device zone information.
+ * We always skip the first zone as it contains the super block
+ * and is not use to back a file.
+ */
+ end = zd->zones + bdev_nr_zones(sb->s_bdev);
+ for (zone = &zd->zones[1]; zone < end; zone = next) {
+
+ next = zone + 1;
+ if (zonefs_zone_type(zone) != ztype)
+ continue;
+
+ if (WARN_ON_ONCE(n >= zgroup->g_nr_zones))
+ return -EINVAL;
+
+ /*
+ * For conventional zones, contiguous zones can be aggregated
+ * together to form larger files. Note that this overwrites the
+ * length of the first zone of the set of contiguous zones
+ * aggregated together. If one offline or read-only zone is
+ * found, assume that all zones aggregated have the same
+ * condition.
+ */
+ if (ztype == ZONEFS_ZTYPE_CNV &&
+ (sbi->s_features & ZONEFS_F_AGGRCNV)) {
+ for (; next < end; next++) {
+ if (zonefs_zone_type(next) != ztype)
+ break;
+ zone->len += next->len;
+ zone->capacity += next->capacity;
+ if (next->cond == BLK_ZONE_COND_READONLY &&
+ zone->cond != BLK_ZONE_COND_OFFLINE)
+ zone->cond = BLK_ZONE_COND_READONLY;
+ else if (next->cond == BLK_ZONE_COND_OFFLINE)
+ zone->cond = BLK_ZONE_COND_OFFLINE;
+ }
+ }
+
+ z = &zgroup->g_zones[n];
+ if (ztype == ZONEFS_ZTYPE_CNV)
+ z->z_flags |= ZONEFS_ZONE_CNV;
+ z->z_sector = zone->start;
+ z->z_size = zone->len << SECTOR_SHIFT;
+ if (z->z_size > bdev_zone_sectors(sb->s_bdev) << SECTOR_SHIFT &&
+ !(sbi->s_features & ZONEFS_F_AGGRCNV)) {
+ zonefs_err(sb,
+ "Invalid zone size %llu (device zone sectors %llu)\n",
+ z->z_size,
+ bdev_zone_sectors(sb->s_bdev) << SECTOR_SHIFT);
+ return -EINVAL;
+ }
+
+ z->z_capacity = min_t(loff_t, MAX_LFS_FILESIZE,
+ zone->capacity << SECTOR_SHIFT);
+ z->z_wpoffset = zonefs_check_zone_condition(sb, z, zone);
+
+ sb->s_maxbytes = max(z->z_capacity, sb->s_maxbytes);
+ sbi->s_blocks += z->z_capacity >> sb->s_blocksize_bits;
+ sbi->s_used_blocks += z->z_wpoffset >> sb->s_blocksize_bits;
+
+ /*
+ * For sequential zones, make sure that any open zone is closed
+ * first to ensure that the initial number of open zones is 0,
+ * in sync with the open zone accounting done when the mount
+ * option ZONEFS_MNTOPT_EXPLICIT_OPEN is used.
+ */
+ if (ztype == ZONEFS_ZTYPE_SEQ &&
+ (zone->cond == BLK_ZONE_COND_IMP_OPEN ||
+ zone->cond == BLK_ZONE_COND_EXP_OPEN)) {
+ ret = zonefs_zone_mgmt(sb, z, REQ_OP_ZONE_CLOSE);
+ if (ret)
+ return ret;
+ }
+
+ zonefs_account_active(sb, z);
+
+ n++;
+ }
+
+ if (WARN_ON_ONCE(n != zgroup->g_nr_zones))
+ return -EINVAL;
+
+ zonefs_info(sb, "Zone group \"%s\" has %u file%s\n",
+ zonefs_zgroup_name(ztype),
+ zgroup->g_nr_zones,
+ zgroup->g_nr_zones > 1 ? "s" : "");
+
+ return 0;
+}
+
+static void zonefs_free_zgroups(struct super_block *sb)
+{
+ struct zonefs_sb_info *sbi = ZONEFS_SB(sb);
+ enum zonefs_ztype ztype;
+
+ if (!sbi)
+ return;
+
+ for (ztype = 0; ztype < ZONEFS_ZTYPE_MAX; ztype++) {
+ kvfree(sbi->s_zgroup[ztype].g_zones);
+ sbi->s_zgroup[ztype].g_zones = NULL;
+ }
+}
+
+/*
+ * Create a zone group and populate it with zone files.
+ */
+static int zonefs_init_zgroups(struct super_block *sb)
+{
+ struct zonefs_zone_data zd;
+ enum zonefs_ztype ztype;
+ int ret;
+
+ /* First get the device zone information */
+ memset(&zd, 0, sizeof(struct zonefs_zone_data));
+ zd.sb = sb;
+ ret = zonefs_get_zone_info(&zd);
+ if (ret)
+ goto cleanup;
+
+ /* Allocate and initialize the zone groups */
+ for (ztype = 0; ztype < ZONEFS_ZTYPE_MAX; ztype++) {
+ ret = zonefs_init_zgroup(sb, &zd, ztype);
+ if (ret) {
+ zonefs_info(sb,
+ "Zone group \"%s\" initialization failed\n",
+ zonefs_zgroup_name(ztype));
+ break;
+ }
+ }
+
+cleanup:
+ zonefs_free_zone_info(&zd);
+ if (ret)
+ zonefs_free_zgroups(sb);
+
+ return ret;
+}
+
/*
* Read super block information from the device.
*/
@@ -945,7 +1055,6 @@ static const struct super_operations zonefs_sops = {
*/
static int zonefs_fill_super(struct super_block *sb, void *data, int silent)
{
- struct zonefs_zone_data zd;
struct zonefs_sb_info *sbi;
struct inode *inode;
enum zonefs_ztype t;
@@ -998,16 +1107,6 @@ static int zonefs_fill_super(struct super_block *sb, void *data, int silent)
if (ret)
return ret;
- memset(&zd, 0, sizeof(struct zonefs_zone_data));
- zd.sb = sb;
- ret = zonefs_get_zone_info(&zd);
- if (ret)
- goto cleanup;
-
- ret = zonefs_sysfs_register(sb);
- if (ret)
- goto cleanup;
-
zonefs_info(sb, "Mounting %u zones", bdev_nr_zones(sb->s_bdev));
if (!sbi->s_max_wro_seq_files &&
@@ -1018,6 +1117,11 @@ static int zonefs_fill_super(struct super_block *sb, void *data, int silent)
sbi->s_mount_opts &= ~ZONEFS_MNTOPT_EXPLICIT_OPEN;
}
+ /* Initialize the zone groups */
+ ret = zonefs_init_zgroups(sb);
+ if (ret)
+ goto cleanup;
+
/* Create root directory inode */
ret = -ENOMEM;
inode = new_inode(sb);
@@ -1037,13 +1141,19 @@ static int zonefs_fill_super(struct super_block *sb, void *data, int silent)
/* Create and populate files in zone groups directories */
for (t = 0; t < ZONEFS_ZTYPE_MAX; t++) {
- ret = zonefs_create_zgroup(&zd, t);
+ ret = zonefs_create_zgroup_inodes(sb, t);
if (ret)
- break;
+ goto cleanup;
}
+ ret = zonefs_sysfs_register(sb);
+ if (ret)
+ goto cleanup;
+
+ return 0;
+
cleanup:
- zonefs_cleanup_zone_info(&zd);
+ zonefs_free_zgroups(sb);
return ret;
}
@@ -1062,6 +1172,7 @@ static void zonefs_kill_super(struct super_block *sb)
d_genocide(sb->s_root);
zonefs_sysfs_unregister(sb);
+ zonefs_free_zgroups(sb);
kill_block_super(sb);
kfree(sbi);
}
diff --git a/fs/zonefs/trace.h b/fs/zonefs/trace.h
index 42edcfd3..9969db3a 100644
--- a/fs/zonefs/trace.h
+++ b/fs/zonefs/trace.h
@@ -20,8 +20,9 @@
#define show_dev(dev) MAJOR(dev), MINOR(dev)
TRACE_EVENT(zonefs_zone_mgmt,
- TP_PROTO(struct inode *inode, enum req_op op),
- TP_ARGS(inode, op),
+ TP_PROTO(struct super_block *sb, struct zonefs_zone *z,
+ enum req_op op),
+ TP_ARGS(sb, z, op),
TP_STRUCT__entry(
__field(dev_t, dev)
__field(ino_t, ino)
@@ -30,12 +31,12 @@ TRACE_EVENT(zonefs_zone_mgmt,
__field(sector_t, nr_sectors)
),
TP_fast_assign(
- __entry->dev = inode->i_sb->s_dev;
- __entry->ino = inode->i_ino;
+ __entry->dev = sb->s_dev;
+ __entry->ino =
+ z->z_sector >> ZONEFS_SB(sb)->s_zone_sectors_shift;
__entry->op = op;
- __entry->sector = ZONEFS_I(inode)->i_zsector;
- __entry->nr_sectors =
- ZONEFS_I(inode)->i_zone_size >> SECTOR_SHIFT;
+ __entry->sector = z->z_sector;
+ __entry->nr_sectors = z->z_size >> SECTOR_SHIFT;
),
TP_printk("bdev=(%d,%d), ino=%lu op=%s, sector=%llu, nr_sectors=%llu",
show_dev(__entry->dev), (unsigned long)__entry->ino,
@@ -58,9 +59,10 @@ TRACE_EVENT(zonefs_file_dio_append,
TP_fast_assign(
__entry->dev = inode->i_sb->s_dev;
__entry->ino = inode->i_ino;
- __entry->sector = ZONEFS_I(inode)->i_zsector;
+ __entry->sector = zonefs_inode_zone(inode)->z_sector;
__entry->size = size;
- __entry->wpoffset = ZONEFS_I(inode)->i_wpoffset;
+ __entry->wpoffset =
+ zonefs_inode_zone(inode)->z_wpoffset;
__entry->ret = ret;
),
TP_printk("bdev=(%d, %d), ino=%lu, sector=%llu, size=%zu, wpoffset=%llu, ret=%zu",
diff --git a/fs/zonefs/zonefs.h b/fs/zonefs/zonefs.h
index 1a225f74..2d626e18 100644
--- a/fs/zonefs/zonefs.h
+++ b/fs/zonefs/zonefs.h
@@ -47,22 +47,39 @@ static inline enum zonefs_ztype zonefs_zone_type(struct blk_zone *zone)
#define ZONEFS_ZONE_CNV (1U << 31)
/*
- * In-memory inode data.
+ * In-memory per-file inode zone data.
*/
-struct zonefs_inode_info {
- struct inode i_vnode;
+struct zonefs_zone {
+ /* Zone state flags */
+ unsigned int z_flags;
- /* File zone start sector (512B unit) */
- sector_t i_zsector;
+ /* Zone start sector (512B unit) */
+ sector_t z_sector;
- /* File zone write pointer position (sequential zones only) */
- loff_t i_wpoffset;
+ /* Zone size (bytes) */
+ loff_t z_size;
- /* File maximum size */
- loff_t i_max_size;
+ /* Zone capacity (file maximum size, bytes) */
+ loff_t z_capacity;
- /* File zone size */
- loff_t i_zone_size;
+ /* Write pointer offset in the zone (sequential zones only, bytes) */
+ loff_t z_wpoffset;
+};
+
+/*
+ * In memory zone group information: all zones of a group are exposed
+ * as files, one file per zone.
+ */
+struct zonefs_zone_group {
+ unsigned int g_nr_zones;
+ struct zonefs_zone *g_zones;
+};
+
+/*
+ * In-memory inode data.
+ */
+struct zonefs_inode_info {
+ struct inode i_vnode;
/*
* To serialise fully against both syscall and mmap based IO and
@@ -81,7 +98,6 @@ struct zonefs_inode_info {
/* guarded by i_truncate_mutex */
unsigned int i_wr_refcnt;
- unsigned int i_flags;
};
static inline struct zonefs_inode_info *ZONEFS_I(struct inode *inode)
@@ -89,24 +105,29 @@ static inline struct zonefs_inode_info *ZONEFS_I(struct inode *inode)
return container_of(inode, struct zonefs_inode_info, i_vnode);
}
-static inline bool zonefs_zone_is_cnv(struct zonefs_inode_info *zi)
+static inline bool zonefs_zone_is_cnv(struct zonefs_zone *z)
+{
+ return z->z_flags & ZONEFS_ZONE_CNV;
+}
+
+static inline bool zonefs_zone_is_seq(struct zonefs_zone *z)
{
- return zi->i_flags & ZONEFS_ZONE_CNV;
+ return !zonefs_zone_is_cnv(z);
}
-static inline bool zonefs_zone_is_seq(struct zonefs_inode_info *zi)
+static inline struct zonefs_zone *zonefs_inode_zone(struct inode *inode)
{
- return !zonefs_zone_is_cnv(zi);
+ return inode->i_private;
}
static inline bool zonefs_inode_is_cnv(struct inode *inode)
{
- return zonefs_zone_is_cnv(ZONEFS_I(inode));
+ return zonefs_zone_is_cnv(zonefs_inode_zone(inode));
}
static inline bool zonefs_inode_is_seq(struct inode *inode)
{
- return zonefs_zone_is_seq(ZONEFS_I(inode));
+ return zonefs_zone_is_seq(zonefs_inode_zone(inode));
}
/*
@@ -200,7 +221,7 @@ struct zonefs_sb_info {
uuid_t s_uuid;
unsigned int s_zone_sectors_shift;
- unsigned int s_nr_files[ZONEFS_ZTYPE_MAX];
+ struct zonefs_zone_group s_zgroup[ZONEFS_ZTYPE_MAX];
loff_t s_blocks;
loff_t s_used_blocks;
@@ -229,8 +250,8 @@ static inline struct zonefs_sb_info *ZONEFS_SB(struct super_block *sb)
pr_warn("zonefs (%s) WARNING: " format, sb->s_id, ## args)
/* In super.c */
-void zonefs_account_active(struct inode *inode);
-int zonefs_zone_mgmt(struct inode *inode, enum req_op op);
+void zonefs_inode_account_active(struct inode *inode);
+int zonefs_inode_zone_mgmt(struct inode *inode, enum req_op op);
void zonefs_i_size_write(struct inode *inode, loff_t isize);
void zonefs_update_stats(struct inode *inode, loff_t new_isize);
void __zonefs_io_error(struct inode *inode, bool write);
--
2.35.3