From: Sarthak Kukreti <sarthakkukreti@chromium.org>
To: sarthakkukreti@google.com, dm-devel@redhat.com,
linux-block@vger.kernel.org, linux-ext4@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org
Cc: Jens Axboe <axboe@kernel.dk>, Theodore Ts'o <tytso@mit.edu>,
"Michael S. Tsirkin" <mst@redhat.com>,
"Darrick J. Wong" <djwong@kernel.org>,
Jason Wang <jasowang@redhat.com>,
Bart Van Assche <bvanassche@google.com>,
Mike Snitzer <snitzer@kernel.org>,
Christoph Hellwig <hch@infradead.org>,
Andreas Dilger <adilger.kernel@dilger.ca>,
Daniil Lunev <dlunev@google.com>,
Stefan Hajnoczi <stefanha@redhat.com>,
Brian Foster <bfoster@redhat.com>,
Alasdair Kergon <agk@redhat.com>
Subject: [dm-devel] [PATCH v2 6/7] ext4: Add mount option for provisioning blocks during allocations
Date: Thu, 29 Dec 2022 00:12:51 -0800 [thread overview]
Message-ID: <20221229081252.452240-7-sarthakkukreti@chromium.org> (raw)
In-Reply-To: <20221229081252.452240-1-sarthakkukreti@chromium.org>
Add a mount option that sets the default provisioning mode for
all files within the filesystem.
Signed-off-by: Sarthak Kukreti <sarthakkukreti@chromium.org>
---
fs/ext4/ext4.h | 1 +
fs/ext4/extents.c | 7 +++++++
fs/ext4/super.c | 7 +++++++
3 files changed, 15 insertions(+)
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 49832e90b62f..29cab2e2ea20 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -1269,6 +1269,7 @@ struct ext4_inode_info {
#define EXT4_MOUNT2_MB_OPTIMIZE_SCAN 0x00000080 /* Optimize group
* scanning in mballoc
*/
+#define EXT4_MOUNT2_PROVISION 0x00000100 /* Provision while allocating file blocks */
#define clear_opt(sb, opt) EXT4_SB(sb)->s_mount_opt &= \
~EXT4_MOUNT_##opt
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 2e64a9211792..a73f44264fe2 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -4441,6 +4441,13 @@ static int ext4_alloc_file_blocks(struct file *file, ext4_lblk_t offset,
unsigned int credits;
loff_t epos;
+ /*
+ * Attempt to provision file blocks if the mount is mounted with
+ * provision.
+ */
+ if (test_opt2(inode->i_sb, PROVISION))
+ flags |= EXT4_GET_BLOCKS_PROVISION;
+
BUG_ON(!ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS));
map.m_lblk = offset;
map.m_len = len;
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 260c1b3e3ef2..5bc376f6a6f0 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -1591,6 +1591,7 @@ enum {
Opt_max_dir_size_kb, Opt_nojournal_checksum, Opt_nombcache,
Opt_no_prefetch_block_bitmaps, Opt_mb_optimize_scan,
Opt_errors, Opt_data, Opt_data_err, Opt_jqfmt, Opt_dax_type,
+ Opt_provision, Opt_noprovision,
#ifdef CONFIG_EXT4_DEBUG
Opt_fc_debug_max_replay, Opt_fc_debug_force
#endif
@@ -1737,6 +1738,8 @@ static const struct fs_parameter_spec ext4_param_specs[] = {
fsparam_flag ("reservation", Opt_removed), /* mount option from ext2/3 */
fsparam_flag ("noreservation", Opt_removed), /* mount option from ext2/3 */
fsparam_u32 ("journal", Opt_removed), /* mount option from ext2/3 */
+ fsparam_flag ("provision", Opt_provision),
+ fsparam_flag ("noprovision", Opt_noprovision),
{}
};
@@ -1826,6 +1829,8 @@ static const struct mount_opts {
{Opt_nombcache, EXT4_MOUNT_NO_MBCACHE, MOPT_SET},
{Opt_no_prefetch_block_bitmaps, EXT4_MOUNT_NO_PREFETCH_BLOCK_BITMAPS,
MOPT_SET},
+ {Opt_provision, EXT4_MOUNT2_PROVISION, MOPT_SET | MOPT_2},
+ {Opt_noprovision, EXT4_MOUNT2_PROVISION, MOPT_CLEAR | MOPT_2},
#ifdef CONFIG_EXT4_DEBUG
{Opt_fc_debug_force, EXT4_MOUNT2_JOURNAL_FAST_COMMIT,
MOPT_SET | MOPT_2 | MOPT_EXT4_ONLY},
@@ -2977,6 +2982,8 @@ static int _ext4_show_options(struct seq_file *seq, struct super_block *sb,
SEQ_OPTS_PUTS("dax=never");
} else if (test_opt2(sb, DAX_INODE)) {
SEQ_OPTS_PUTS("dax=inode");
+ } else if (test_opt2(sb, PROVISION)) {
+ SEQ_OPTS_PUTS("provision");
}
if (sbi->s_groups_count >= MB_DEFAULT_LINEAR_SCAN_THRESHOLD &&
--
2.37.3
--
dm-devel mailing list
dm-devel@redhat.com
https://listman.redhat.com/mailman/listinfo/dm-devel
next prev parent reply other threads:[~2023-01-02 7:44 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-29 8:12 [dm-devel] [PATCH v2 0/8] Introduce provisioning primitives for thinly provisioned storage Sarthak Kukreti
2022-12-29 8:12 ` [dm-devel] [PATCH v2 1/7] block: Introduce provisioning primitives Sarthak Kukreti
2022-12-29 8:12 ` [dm-devel] [PATCH v2 2/7] dm: Add support for block provisioning Sarthak Kukreti
2023-01-05 14:43 ` Brian Foster
2023-03-31 0:30 ` Sarthak Kukreti
2023-03-31 12:28 ` Brian Foster
2023-04-03 22:57 ` Sarthak Kukreti
2022-12-29 8:12 ` [dm-devel] [PATCH v2 3/7] fs: Introduce FALLOC_FL_PROVISION Sarthak Kukreti
2023-01-04 16:39 ` Darrick J. Wong
2023-01-04 18:58 ` Sarthak Kukreti
2023-01-04 21:22 ` Sarthak Kukreti
2023-01-05 14:46 ` Brian Foster
2023-01-05 19:35 ` Darrick J. Wong
2023-01-09 15:07 ` Brian Foster
2023-03-31 0:28 ` Sarthak Kukreti
2023-03-31 0:28 ` Sarthak Kukreti
2023-01-05 15:49 ` Theodore Ts'o
2023-03-31 0:28 ` Sarthak Kukreti
2022-12-29 8:12 ` [dm-devel] [PATCH v2 4/7] loop: Add support for provision requests Sarthak Kukreti
2022-12-29 8:12 ` [dm-devel] [PATCH v2 5/7] ext4: Add support for FALLOC_FL_PROVISION Sarthak Kukreti
2022-12-29 8:12 ` Sarthak Kukreti [this message]
2023-01-09 15:02 ` [dm-devel] [PATCH v2 6/7] ext4: Add mount option for provisioning blocks during allocations Brian Foster
2022-12-29 8:12 ` [dm-devel] [PATCH v2 7/7] ext4: Add a per-file provision override xattr Sarthak Kukreti
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