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Fri, 4 Oct 2024 20:05:44 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id FsSLNphKAGcYRgAAD6G6ig (envelope-from ); Fri, 04 Oct 2024 20:05:44 +0000 From: Goldwyn Rodrigues To: linux-kernel@vger.kernel.org Cc: linux-fsdevel@vger.kernel.org, Goldwyn Rodrigues Subject: [PATCH 09/12] btrfs: define btrfs_iomap_read_folio_ops Date: Fri, 4 Oct 2024 16:04:36 -0400 Message-ID: <3b91f2eb82e9b6614732dc2df03c41c63dfc0a12.1728071257.git.rgoldwyn@suse.com> X-Mailer: git-send-email 2.46.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Spam-Score: -3.80 X-Spamd-Result: default: False [-3.80 / 50.00]; BAYES_HAM(-3.00)[100.00%]; NEURAL_HAM_LONG(-1.00)[-1.000]; R_MISSING_CHARSET(0.50)[]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; TO_DN_SOME(0.00)[]; MIME_TRACE(0.00)[0:+]; RCVD_VIA_SMTP_AUTH(0.00)[]; ARC_NA(0.00)[]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; FUZZY_BLOCKED(0.00)[rspamd.com]; TO_MATCH_ENVRCPT_ALL(0.00)[]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; FROM_EQ_ENVFROM(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.com:mid,suse.com:email]; RCVD_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[] X-Spam-Flag: NO X-Spam-Level: Content-Type: text/plain; charset="utf-8" From: Goldwyn Rodrigues Use btrfs_bioset so iomap allocates btrfs_bio for bios to be submitted for btrfs. Set the file_offset of the bbio from the first folio in the bio. For compressed/encoded reads, call btrfs_submit_compressed_read() else call btrfs_submit_bbio() After the read is complete, call iomap_read_end_io() to finish reads on the folios. Signed-off-by: Goldwyn Rodrigues --- fs/btrfs/bio.c | 2 +- fs/btrfs/bio.h | 1 + fs/btrfs/extent_io.c | 29 +++++++++++++++++++++++++++++ 3 files changed, 31 insertions(+), 1 deletion(-) diff --git a/fs/btrfs/bio.c b/fs/btrfs/bio.c index 056f8a171bba..9d448235b8bd 100644 --- a/fs/btrfs/bio.c +++ b/fs/btrfs/bio.c @@ -15,7 +15,7 @@ #include "file-item.h" #include "raid-stripe-tree.h" =20 -static struct bio_set btrfs_bioset; +struct bio_set btrfs_bioset; static struct bio_set btrfs_clone_bioset; static struct bio_set btrfs_repair_bioset; static mempool_t btrfs_failed_bio_pool; diff --git a/fs/btrfs/bio.h b/fs/btrfs/bio.h index e48612340745..687a8361202a 100644 --- a/fs/btrfs/bio.h +++ b/fs/btrfs/bio.h @@ -15,6 +15,7 @@ struct btrfs_bio; struct btrfs_fs_info; struct btrfs_inode; +extern struct bio_set btrfs_bioset; =20 #define BTRFS_BIO_INLINE_CSUM_SIZE 64 =20 diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 6ef2fa802c30..43418b6d4824 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -985,10 +985,39 @@ static int btrfs_read_iomap_begin(struct inode *inode= , loff_t pos, return 0; } =20 +static void btrfs_read_endio(struct btrfs_bio *bbio) +{ + iomap_read_end_io(&bbio->bio); +} + +static void btrfs_read_submit_io(struct inode *inode, struct bio *bio, + const struct iomap *iomap) +{ + struct btrfs_bio *bbio =3D btrfs_bio(bio); + struct folio_iter fi; + + btrfs_bio_init(bbio, btrfs_sb(inode->i_sb), btrfs_read_endio, NULL); + bbio->inode =3D BTRFS_I(inode); + + bio_first_folio(&fi, bio, 0); + bbio->file_offset =3D folio_pos(fi.folio); + + if (iomap->type & IOMAP_ENCODED) { + bbio->bio.bi_iter.bi_sector =3D iomap->addr >> SECTOR_SHIFT; + btrfs_submit_compressed_read(bbio); + } else { + btrfs_submit_bbio(bbio, 0); + } +} + static const struct iomap_ops btrfs_buffered_read_iomap_ops =3D { .iomap_begin =3D btrfs_read_iomap_begin, }; =20 +static const struct iomap_read_folio_ops btrfs_iomap_read_folio_ops =3D { + .submit_io =3D btrfs_read_submit_io, + .bio_set =3D &btrfs_bioset, +}; =20 /* * basic readpage implementation. Locked extent state structs are inserted --=20 2.46.1