From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 75434C433DB for ; Thu, 21 Jan 2021 17:18:32 +0000 (UTC) Received: from pdx1-mailman02.dreamhost.com (pdx1-mailman02.dreamhost.com [64.90.62.194]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 373EE23A5A for ; Thu, 21 Jan 2021 17:18:32 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 373EE23A5A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lustre-devel-bounces@lists.lustre.org Received: from pdx1-mailman02.dreamhost.com (localhost [IPv6:::1]) by pdx1-mailman02.dreamhost.com (Postfix) with ESMTP id 541E221FED0; Thu, 21 Jan 2021 09:17:55 -0800 (PST) Received: from smtp4.ccs.ornl.gov (smtp4.ccs.ornl.gov [160.91.203.40]) by pdx1-mailman02.dreamhost.com (Postfix) with ESMTP id 912B521FC7A for ; Thu, 21 Jan 2021 09:17:14 -0800 (PST) Received: from star.ccs.ornl.gov (star.ccs.ornl.gov [160.91.202.134]) by smtp4.ccs.ornl.gov (Postfix) with ESMTP id 7C053100848F; Thu, 21 Jan 2021 12:17:05 -0500 (EST) Received: by star.ccs.ornl.gov (Postfix, from userid 2004) id 7AC7D1B49C; Thu, 21 Jan 2021 12:17:05 -0500 (EST) From: James Simmons To: Andreas Dilger , Oleg Drokin , NeilBrown Date: Thu, 21 Jan 2021 12:16:54 -0500 Message-Id: <1611249422-556-32-git-send-email-jsimmons@infradead.org> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1611249422-556-1-git-send-email-jsimmons@infradead.org> References: <1611249422-556-1-git-send-email-jsimmons@infradead.org> Subject: [lustre-devel] [PATCH 31/39] lustre: lov: FIEMAP support for PFL and FLR file X-BeenThere: lustre-devel@lists.lustre.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "For discussing Lustre software development." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Lustre Development List MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: lustre-devel-bounces@lists.lustre.org Sender: "lustre-devel" From: Bobi Jam * use the high 16 bits of fe_device to record the absolute stripe number from the beginning we are processing, so that continuous call can resume from the stripe specified by it. WC-bug-id: https://jira.whamcloud.com/browse/LU-11848 Lustre-commit: 409719608cf0f60 ("LU-11848 lov: FIEMAP support for PFL and FLR file") Signed-off-by: Bobi Jam Reviewed-on: https://review.whamcloud.com/40766 Reviewed-by: Andreas Dilger Reviewed-by: Alex Zhuravlev Signed-off-by: James Simmons --- fs/lustre/lov/lov_object.c | 248 +++++++++++++++++++----------- fs/lustre/lov/lov_offset.c | 8 +- fs/lustre/ptlrpc/wiretest.c | 1 - include/uapi/linux/lustre/lustre_fiemap.h | 30 +++- 4 files changed, 191 insertions(+), 96 deletions(-) diff --git a/fs/lustre/lov/lov_object.c b/fs/lustre/lov/lov_object.c index 0762cc5..3fcd342 100644 --- a/fs/lustre/lov/lov_object.c +++ b/fs/lustre/lov/lov_object.c @@ -1487,21 +1487,34 @@ static int fiemap_calc_last_stripe(struct lov_stripe_md *lsm, int index, int start_stripe, int *stripe_count) { struct lov_stripe_md_entry *lsme = lsm->lsm_entries[index]; + int init_stripe; int last_stripe; - u64 obd_start; - u64 obd_end; int i, j; + init_stripe = lov_stripe_number(lsm, index, ext->e_start); + if (ext->e_end - ext->e_start > lsme->lsme_stripe_size * lsme->lsme_stripe_count) { - last_stripe = (start_stripe < 1 ? lsme->lsme_stripe_count - 1 : - start_stripe - 1); - *stripe_count = lsme->lsme_stripe_count; + if (init_stripe == start_stripe) { + last_stripe = (start_stripe < 1) ? + lsme->lsme_stripe_count - 1 : start_stripe - 1; + *stripe_count = lsme->lsme_stripe_count; + } else if (init_stripe < start_stripe) { + last_stripe = (init_stripe < 1) ? + lsme->lsme_stripe_count - 1 : init_stripe - 1; + *stripe_count = lsme->lsme_stripe_count - + (start_stripe - init_stripe); + } else { + last_stripe = init_stripe - 1; + *stripe_count = init_stripe - start_stripe; + } } else { for (j = 0, i = start_stripe; j < lsme->lsme_stripe_count; i = (i + 1) % lsme->lsme_stripe_count, j++) { - if (lov_stripe_intersects(lsm, index, i, ext, - &obd_start, &obd_end) == 0) + if (!lov_stripe_intersects(lsm, index, i, ext, NULL, + NULL)) + break; + if ((start_stripe != init_stripe) && (i == init_stripe)) break; } *stripe_count = j; @@ -1524,13 +1537,14 @@ static int fiemap_calc_last_stripe(struct lov_stripe_md *lsm, int index, static void fiemap_prepare_and_copy_exts(struct fiemap *fiemap, struct fiemap_extent *lcl_fm_ext, int ost_index, unsigned int ext_count, - int current_extent) + int current_extent, int abs_stripeno) { unsigned int ext; char *to; for (ext = 0; ext < ext_count; ext++) { - lcl_fm_ext[ext].fe_device = ost_index; + set_fe_device_stripenr(&lcl_fm_ext[ext], ost_index, + abs_stripeno); lcl_fm_ext[ext].fe_flags |= FIEMAP_EXTENT_NET; } @@ -1565,26 +1579,14 @@ static u64 fiemap_calc_fm_end_offset(struct fiemap *fiemap, { struct lov_stripe_md_entry *lsme = lsm->lsm_entries[index]; u64 local_end = fiemap->fm_extents[0].fe_logical; - u64 lun_start, lun_end; + u64 lun_end; u64 fm_end_offset; int stripe_no = -1; - int i; if (!fiemap->fm_extent_count || !fiemap->fm_extents[0].fe_logical) return 0; - /* Find out stripe_no from ost_index saved in the fe_device */ - for (i = 0; i < lsme->lsme_stripe_count; i++) { - struct lov_oinfo *oinfo = lsme->lsme_oinfo[i]; - - if (lov_oinfo_is_dummy(oinfo)) - continue; - - if (oinfo->loi_ost_idx == fiemap->fm_extents[0].fe_device) { - stripe_no = i; - break; - } - } + stripe_no = *start_stripe; if (stripe_no == -1) return -EINVAL; @@ -1593,11 +1595,9 @@ static u64 fiemap_calc_fm_end_offset(struct fiemap *fiemap, * If we have finished mapping on previous device, shift logical * offset to start of next device */ - if (lov_stripe_intersects(lsm, index, stripe_no, ext, - &lun_start, &lun_end) != 0 && + if (lov_stripe_intersects(lsm, index, stripe_no, ext, NULL, &lun_end) && local_end < lun_end) { fm_end_offset = local_end; - *start_stripe = stripe_no; } else { /* This is a special value to indicate that caller should * calculate offset in next stripe. @@ -1611,16 +1611,16 @@ static u64 fiemap_calc_fm_end_offset(struct fiemap *fiemap, struct fiemap_state { struct fiemap *fs_fm; - struct lu_extent fs_ext; + struct lu_extent fs_ext; /* current entry extent */ u64 fs_length; - u64 fs_end_offset; - int fs_cur_extent; - int fs_cnt_need; + u64 fs_end_offset; /* last iteration offset */ + int fs_cur_extent; /* collected exts so far */ + int fs_cnt_need; /* # of extents buf can hold */ int fs_start_stripe; int fs_last_stripe; - bool fs_device_done; - bool fs_finish_stripe; - bool fs_enough; + bool fs_device_done; /* enough for this OST */ + bool fs_finish_stripe; /* reached fs_last_stripe */ + bool fs_enough; /* enough for this call */ }; static struct cl_object *lov_find_subobj(const struct lu_env *env, @@ -1669,17 +1669,17 @@ static struct cl_object *lov_find_subobj(const struct lu_env *env, static int fiemap_for_stripe(const struct lu_env *env, struct cl_object *obj, struct lov_stripe_md *lsm, struct fiemap *fiemap, size_t *buflen, struct ll_fiemap_info_key *fmkey, - int index, int stripeno, struct fiemap_state *fs) + int index, int stripe_last, int stripeno, + struct fiemap_state *fs) { struct lov_stripe_md_entry *lsme = lsm->lsm_entries[index]; struct cl_object *subobj; struct lov_obd *lov = lu2lov_dev(obj->co_lu.lo_dev)->ld_lov; struct fiemap_extent *fm_ext = &fs->fs_fm->fm_extents[0]; - u64 req_fm_len; /* Stores length of required mapping */ + u64 req_fm_len; /* max requested extent coverage */ u64 len_mapped_single_call; - u64 lun_start; - u64 lun_end; - u64 obd_object_end; + u64 obd_start; + u64 obd_end; unsigned int ext_count; /* EOF for object */ bool ost_eof = false; @@ -1691,24 +1691,24 @@ static int fiemap_for_stripe(const struct lu_env *env, struct cl_object *obj, fs->fs_device_done = false; /* Find out range of mapping on this stripe */ if ((lov_stripe_intersects(lsm, index, stripeno, &fs->fs_ext, - &lun_start, &obd_object_end)) == 0) + &obd_start, &obd_end)) == 0) return 0; if (lov_oinfo_is_dummy(lsme->lsme_oinfo[stripeno])) return -EIO; /* If this is a continuation FIEMAP call and we are on - * starting stripe then lun_start needs to be set to + * starting stripe then obd_start needs to be set to * end_offset */ if (fs->fs_end_offset != 0 && stripeno == fs->fs_start_stripe) - lun_start = fs->fs_end_offset; + obd_start = fs->fs_end_offset; - lun_end = lov_size_to_stripe(lsm, index, fs->fs_ext.e_end, stripeno); - if (lun_start == lun_end) + if (lov_size_to_stripe(lsm, index, fs->fs_ext.e_end, stripeno) == + obd_start) return 0; - req_fm_len = obd_object_end - lun_start + 1; + req_fm_len = obd_end - obd_start + 1; fs->fs_fm->fm_length = 0; len_mapped_single_call = 0; @@ -1729,7 +1729,7 @@ static int fiemap_for_stripe(const struct lu_env *env, struct cl_object *obj, fs->fs_cur_extent; } - lun_start += len_mapped_single_call; + obd_start += len_mapped_single_call; fs->fs_fm->fm_length = req_fm_len - len_mapped_single_call; req_fm_len = fs->fs_fm->fm_length; /** @@ -1753,14 +1753,14 @@ static int fiemap_for_stripe(const struct lu_env *env, struct cl_object *obj, fs->fs_fm->fm_flags |= FIEMAP_EXTENT_LAST; fs->fs_fm->fm_mapped_extents = 1; - fm_ext[0].fe_logical = lun_start; - fm_ext[0].fe_length = obd_object_end - lun_start + 1; + fm_ext[0].fe_logical = obd_start; + fm_ext[0].fe_length = obd_end - obd_start + 1; fm_ext[0].fe_flags |= FIEMAP_EXTENT_UNKNOWN; goto inactive_tgt; } - fs->fs_fm->fm_start = lun_start; + fs->fs_fm->fm_start = obd_start; fs->fs_fm->fm_flags &= ~FIEMAP_FLAG_DEVICE_ORDER; memcpy(&fmkey->lfik_fiemap, fs->fs_fm, sizeof(*fs->fs_fm)); *buflen = fiemap_count_to_size(fs->fs_fm->fm_extent_count); @@ -1799,7 +1799,7 @@ static int fiemap_for_stripe(const struct lu_env *env, struct cl_object *obj, /* prepare to copy retrived map extents */ len_mapped_single_call = fm_ext[ext_count - 1].fe_logical + fm_ext[ext_count - 1].fe_length - - lun_start; + obd_start; /* Have we finished mapping on this device? */ if (req_fm_len <= len_mapped_single_call) { @@ -1821,7 +1821,8 @@ static int fiemap_for_stripe(const struct lu_env *env, struct cl_object *obj, } fiemap_prepare_and_copy_exts(fiemap, fm_ext, ost_index, - ext_count, fs->fs_cur_extent); + ext_count, fs->fs_cur_extent, + stripe_last + stripeno); fs->fs_cur_extent += ext_count; /* Ran out of available extents? */ @@ -1863,12 +1864,17 @@ static int lov_object_fiemap(const struct lu_env *env, struct cl_object *obj, loff_t whole_start; loff_t whole_end; int entry; - int start_entry; + int start_entry = -1; int end_entry; int cur_stripe = 0; int stripe_count; int rc = 0; struct fiemap_state fs = { NULL }; + struct lu_extent range; + int cur_ext; + int stripe_last; + int start_stripe = 0; + bool resume = false; lsm = lov_lsm_addref(cl2lov(obj)); if (!lsm) { @@ -1936,8 +1942,6 @@ static int lov_object_fiemap(const struct lu_env *env, struct cl_object *obj, */ if (fiemap_count_to_size(fiemap->fm_extent_count) > *buflen) fiemap->fm_extent_count = fiemap_size_to_count(*buflen); - if (!fiemap->fm_extent_count) - fs.fs_cnt_need = 0; fs.fs_enough = false; fs.fs_cur_extent = 0; @@ -1951,73 +1955,142 @@ static int lov_object_fiemap(const struct lu_env *env, struct cl_object *obj, goto out_fm_local; } whole_end = (fiemap->fm_length == OBD_OBJECT_EOF) ? - fmkey->lfik_oa.o_size : - whole_start + fiemap->fm_length - 1; + fmkey->lfik_oa.o_size + 1 : + whole_start + fiemap->fm_length; /** * If fiemap->fm_length != OBD_OBJECT_EOF but whole_end exceeds file * size */ - if (whole_end > fmkey->lfik_oa.o_size) - whole_end = fmkey->lfik_oa.o_size; + if (whole_end > fmkey->lfik_oa.o_size + 1) + whole_end = fmkey->lfik_oa.o_size + 1; - start_entry = lov_lsm_entry(lsm, whole_start); - end_entry = lov_lsm_entry(lsm, whole_end); - if (end_entry == -1) - end_entry = lsm->lsm_entry_count - 1; + /** + * the high 16bits of fe_device remember which stripe the last + * call has been arrived, we'd continue from there in this call. + */ + if (fiemap->fm_extent_count && fiemap->fm_extents[0].fe_logical) + resume = true; + stripe_last = get_fe_stripenr(&fiemap->fm_extents[0]); + /** + * stripe_last records stripe number we've been processed in the last + * call + */ + end_entry = lsm->lsm_entry_count - 1; + cur_stripe = 0; + for (entry = 0; entry <= end_entry; entry++) { + lsme = lsm->lsm_entries[entry]; + if (cur_stripe + lsme->lsme_stripe_count >= stripe_last) { + start_entry = entry; + start_stripe = stripe_last - cur_stripe; + break; + } + cur_stripe += lsme->lsme_stripe_count; + } - if (start_entry == -1 || end_entry == -1) { + if (start_entry == -1) { + CERROR(DFID": FIEMAP does not init start entry, cur_stripe=%d, stripe_last=%d\n", + PFID(lu_object_fid(&obj->co_lu)), + cur_stripe, stripe_last); rc = -EINVAL; goto out_fm_local; } + /** + * @start_entry & @start_stripe records the position of fiemap + * resumption @stripe_last keeps recording the absolution position + * we'are processing. @resume indicates we'd honor @start_stripe. + */ + + range.e_start = whole_start; + range.e_end = whole_end; - /* TODO: rewrite it with lov_foreach_io_layout() */ for (entry = start_entry; entry <= end_entry; entry++) { + /* remeber to update stripe_last accordingly */ lsme = lsm->lsm_entries[entry]; - if (!lsme_inited(lsme)) - break; + /* FLR could contain component holes between entries */ + if (!lsme_inited(lsme)) { + stripe_last += lsme->lsme_stripe_count; + resume = false; + continue; + } - if (entry == start_entry) - fs.fs_ext.e_start = whole_start; - else + if (!lu_extent_is_overlapped(&range, &lsme->lsme_extent)) { + stripe_last += lsme->lsme_stripe_count; + resume = false; + continue; + } + + /* prepare for a component entry iteration */ + if (lsme->lsme_extent.e_start > whole_start) fs.fs_ext.e_start = lsme->lsme_extent.e_start; - if (entry == end_entry) + else + fs.fs_ext.e_start = whole_start; + if (lsme->lsme_extent.e_end > whole_end) fs.fs_ext.e_end = whole_end; else - fs.fs_ext.e_end = lsme->lsme_extent.e_end - 1; - fs.fs_length = fs.fs_ext.e_end - fs.fs_ext.e_start + 1; + fs.fs_ext.e_end = lsme->lsme_extent.e_end; /* Calculate start stripe, last stripe and length of mapping */ - fs.fs_start_stripe = lov_stripe_number(lsm, entry, - fs.fs_ext.e_start); + if (resume) { + fs.fs_start_stripe = start_stripe; + /* put stripe_last to the first stripe of the comp */ + stripe_last -= start_stripe; + resume = false; + } else { + fs.fs_start_stripe = lov_stripe_number(lsm, entry, + fs.fs_ext.e_start); + } fs.fs_last_stripe = fiemap_calc_last_stripe(lsm, entry, &fs.fs_ext, fs.fs_start_stripe, &stripe_count); - fs.fs_end_offset = fiemap_calc_fm_end_offset(fiemap, lsm, entry, - &fs.fs_ext, - &fs.fs_start_stripe); + /** + * A new mirror component is under process, reset + * fs.fs_end_offset and then fiemap_for_stripe() starts from + * the overlapping extent, otherwise starts from + * fs.fs_end_offset. + */ + if (entry > start_entry && lsme->lsme_extent.e_start == 0) { + /* new mirror */ + fs.fs_end_offset = 0; + } else { + fs.fs_end_offset = fiemap_calc_fm_end_offset(fiemap, + lsm, entry, + &fs.fs_ext, + &fs.fs_start_stripe); + } + /* Check each stripe */ for (cur_stripe = fs.fs_start_stripe; stripe_count > 0; --stripe_count, cur_stripe = (cur_stripe + 1) % lsme->lsme_stripe_count) { + /* reset fs_finish_stripe */ + fs.fs_finish_stripe = false; rc = fiemap_for_stripe(env, obj, lsm, fiemap, buflen, - fmkey, entry, cur_stripe, &fs); + fmkey, entry, stripe_last, + cur_stripe, &fs); if (rc < 0) goto out_fm_local; - if (fs.fs_enough) + if (fs.fs_enough) { + stripe_last += cur_stripe; goto finish; + } if (fs.fs_finish_stripe) break; } /* for each stripe */ - } /* for covering layout component */ + stripe_last += lsme->lsme_stripe_count; + } /* for covering layout component entry */ - /* - * We've traversed all components, set @entry to the last component - * entry, it's for the last stripe check. - */ - entry--; finish: + if (fs.fs_cur_extent > 0) + cur_ext = fs.fs_cur_extent - 1; + else + cur_ext = 0; + + /* done all the processing */ + if (entry > end_entry) + fiemap->fm_extents[cur_ext].fe_flags |= FIEMAP_EXTENT_LAST; + /* * Indicate that we are returning device offsets unless file just has * single stripe @@ -2030,13 +2103,6 @@ static int lov_object_fiemap(const struct lu_env *env, struct cl_object *obj, if (!fiemap->fm_extent_count) goto skip_last_device_calc; - /* - * Check if we have reached the last stripe and whether mapping for that - * stripe is done. - */ - if ((cur_stripe == fs.fs_last_stripe) && fs.fs_device_done) - fiemap->fm_extents[fs.fs_cur_extent - 1].fe_flags |= - FIEMAP_EXTENT_LAST; skip_last_device_calc: fiemap->fm_mapped_extents = fs.fs_cur_extent; out_fm_local: diff --git a/fs/lustre/lov/lov_offset.c b/fs/lustre/lov/lov_offset.c index b53ce43..ca763af 100644 --- a/fs/lustre/lov/lov_offset.c +++ b/fs/lustre/lov/lov_offset.c @@ -227,18 +227,24 @@ u64 lov_size_to_stripe(struct lov_stripe_md *lsm, int index, u64 file_size, * that is contained within the lov extent. this returns true if the given * stripe does intersect with the lov extent. * - * Closed interval [@obd_start, @obd_end] will be returned. + * Closed interval [@obd_start, @obd_end] will be returned if caller needs them. */ int lov_stripe_intersects(struct lov_stripe_md *lsm, int index, int stripeno, struct lu_extent *ext, u64 *obd_start, u64 *obd_end) { struct lov_stripe_md_entry *entry = lsm->lsm_entries[index]; int start_side, end_side; + u64 loc_start, loc_end; u64 start, end; if (!lu_extent_is_overlapped(ext, &entry->lsme_extent)) return 0; + if (!obd_start) + obd_start = &loc_start; + if (!obd_end) + obd_end = &loc_end; + start = max_t(u64, ext->e_start, entry->lsme_extent.e_start); end = min_t(u64, ext->e_end, entry->lsme_extent.e_end); if (end != OBD_OBJECT_EOF) diff --git a/fs/lustre/ptlrpc/wiretest.c b/fs/lustre/ptlrpc/wiretest.c index fedb914..a500a87 100644 --- a/fs/lustre/ptlrpc/wiretest.c +++ b/fs/lustre/ptlrpc/wiretest.c @@ -4262,7 +4262,6 @@ void lustre_assert_wire_constants(void) BUILD_BUG_ON(FIEMAP_EXTENT_UNWRITTEN != 0x00000800); BUILD_BUG_ON(FIEMAP_EXTENT_MERGED != 0x00001000); BUILD_BUG_ON(FIEMAP_EXTENT_SHARED != 0x00002000); - BUILD_BUG_ON(FIEMAP_EXTENT_NO_DIRECT != 0x40000000); BUILD_BUG_ON(FIEMAP_EXTENT_NET != 0x80000000); #ifdef CONFIG_FS_POSIX_ACL diff --git a/include/uapi/linux/lustre/lustre_fiemap.h b/include/uapi/linux/lustre/lustre_fiemap.h index 4ae1850..f93e107 100644 --- a/include/uapi/linux/lustre/lustre_fiemap.h +++ b/include/uapi/linux/lustre/lustre_fiemap.h @@ -43,9 +43,35 @@ #include #include -/* XXX: We use fiemap_extent::fe_reserved[0] */ +/** + * XXX: We use fiemap_extent::fe_reserved[0], notice the high 16bits of it + * is used to locate the stripe number starting from the very beginning to + * resume the fiemap call. + */ #define fe_device fe_reserved[0] +static inline int get_fe_device(struct fiemap_extent *fe) +{ + return fe->fe_device & 0xffff; +} +static inline void set_fe_device(struct fiemap_extent *fe, int devno) +{ + fe->fe_device = (fe->fe_device & 0xffff0000) | (devno & 0xffff); +} +static inline int get_fe_stripenr(struct fiemap_extent *fe) +{ + return fe->fe_device >> 16; +} +static inline void set_fe_stripenr(struct fiemap_extent *fe, int nr) +{ + fe->fe_device = (fe->fe_device & 0xffff) | (nr << 16); +} +static inline void set_fe_device_stripenr(struct fiemap_extent *fe, int devno, + int nr) +{ + fe->fe_device = (nr << 16) | (devno & 0xffff); +} + static inline __kernel_size_t fiemap_count_to_size(__kernel_size_t extent_count) { return sizeof(struct fiemap) + extent_count * @@ -64,8 +90,6 @@ static inline unsigned int fiemap_size_to_count(__kernel_size_t array_size) #undef FIEMAP_FLAGS_COMPAT #endif -/* Lustre specific flags - use a high bit, don't conflict with upstream flag */ -#define FIEMAP_EXTENT_NO_DIRECT 0x40000000 /* Data mapping undefined */ #define FIEMAP_EXTENT_NET 0x80000000 /* Data stored remotely. * Sets NO_DIRECT flag */ -- 1.8.3.1 _______________________________________________ lustre-devel mailing list lustre-devel@lists.lustre.org http://lists.lustre.org/listinfo.cgi/lustre-devel-lustre.org