diff options
Diffstat (limited to 'fs/ceph/file.c')
| -rw-r--r-- | fs/ceph/file.c | 578 |
1 files changed, 419 insertions, 159 deletions
diff --git a/fs/ceph/file.c b/fs/ceph/file.c index 92ab20433682..27cad84dab23 100644 --- a/fs/ceph/file.c +++ b/fs/ceph/file.c @@ -1,5 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 #include <linux/ceph/ceph_debug.h> +#include <linux/ceph/striper.h> #include <linux/module.h> #include <linux/sched.h> @@ -557,90 +558,26 @@ enum { }; /* - * Read a range of bytes striped over one or more objects. Iterate over - * objects we stripe over. (That's not atomic, but good enough for now.) - * - * If we get a short result from the OSD, check against i_size; we need to - * only return a short read to the caller if we hit EOF. - */ -static int striped_read(struct inode *inode, - u64 pos, u64 len, - struct page **pages, int num_pages, - int page_align, int *checkeof) -{ - struct ceph_fs_client *fsc = ceph_inode_to_client(inode); - struct ceph_inode_info *ci = ceph_inode(inode); - u64 this_len; - loff_t i_size; - int page_idx; - int ret, read = 0; - bool hit_stripe, was_short; - - /* - * we may need to do multiple reads. not atomic, unfortunately. - */ -more: - this_len = len; - page_idx = (page_align + read) >> PAGE_SHIFT; - ret = ceph_osdc_readpages(&fsc->client->osdc, ceph_vino(inode), - &ci->i_layout, pos, &this_len, - ci->i_truncate_seq, ci->i_truncate_size, - pages + page_idx, num_pages - page_idx, - ((page_align + read) & ~PAGE_MASK)); - if (ret == -ENOENT) - ret = 0; - hit_stripe = this_len < len; - was_short = ret >= 0 && ret < this_len; - dout("striped_read %llu~%llu (read %u) got %d%s%s\n", pos, len, read, - ret, hit_stripe ? " HITSTRIPE" : "", was_short ? " SHORT" : ""); - - i_size = i_size_read(inode); - if (ret >= 0) { - if (was_short && (pos + ret < i_size)) { - int zlen = min(this_len - ret, i_size - pos - ret); - int zoff = page_align + read + ret; - dout(" zero gap %llu to %llu\n", - pos + ret, pos + ret + zlen); - ceph_zero_page_vector_range(zoff, zlen, pages); - ret += zlen; - } - - read += ret; - pos += ret; - len -= ret; - - /* hit stripe and need continue*/ - if (len && hit_stripe && pos < i_size) - goto more; - } - - if (read > 0) { - ret = read; - /* did we bounce off eof? */ - if (pos + len > i_size) - *checkeof = CHECK_EOF; - } - - dout("striped_read returns %d\n", ret); - return ret; -} - -/* * Completely synchronous read and write methods. Direct from __user * buffer to osd, or directly to user pages (if O_DIRECT). * - * If the read spans object boundary, just do multiple reads. + * If the read spans object boundary, just do multiple reads. (That's not + * atomic, but good enough for now.) + * + * If we get a short result from the OSD, check against i_size; we need to + * only return a short read to the caller if we hit EOF. */ static ssize_t ceph_sync_read(struct kiocb *iocb, struct iov_iter *to, - int *checkeof) + int *retry_op) { struct file *file = iocb->ki_filp; struct inode *inode = file_inode(file); - struct page **pages; - u64 off = iocb->ki_pos; - int num_pages; + struct ceph_inode_info *ci = ceph_inode(inode); + struct ceph_fs_client *fsc = ceph_inode_to_client(inode); + struct ceph_osd_client *osdc = &fsc->client->osdc; ssize_t ret; - size_t len = iov_iter_count(to); + u64 off = iocb->ki_pos; + u64 len = iov_iter_count(to); dout("sync_read on file %p %llu~%u %s\n", file, off, (unsigned)len, (file->f_flags & O_DIRECT) ? "O_DIRECT" : ""); @@ -653,61 +590,118 @@ static ssize_t ceph_sync_read(struct kiocb *iocb, struct iov_iter *to, * but it will at least behave sensibly when they are * in sequence. */ - ret = filemap_write_and_wait_range(inode->i_mapping, off, - off + len); + ret = filemap_write_and_wait_range(inode->i_mapping, off, off + len); if (ret < 0) return ret; - if (unlikely(to->type & ITER_PIPE)) { + ret = 0; + while ((len = iov_iter_count(to)) > 0) { + struct ceph_osd_request *req; + struct page **pages; + int num_pages; size_t page_off; - ret = iov_iter_get_pages_alloc(to, &pages, len, - &page_off); - if (ret <= 0) - return -ENOMEM; - num_pages = DIV_ROUND_UP(ret + page_off, PAGE_SIZE); + u64 i_size; + bool more; + + req = ceph_osdc_new_request(osdc, &ci->i_layout, + ci->i_vino, off, &len, 0, 1, + CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, + NULL, ci->i_truncate_seq, + ci->i_truncate_size, false); + if (IS_ERR(req)) { + ret = PTR_ERR(req); + break; + } + + more = len < iov_iter_count(to); - ret = striped_read(inode, off, ret, pages, num_pages, - page_off, checkeof); - if (ret > 0) { - iov_iter_advance(to, ret); - off += ret; + if (unlikely(iov_iter_is_pipe(to))) { + ret = iov_iter_get_pages_alloc(to, &pages, len, + &page_off); + if (ret <= 0) { + ceph_osdc_put_request(req); + ret = -ENOMEM; + break; + } + num_pages = DIV_ROUND_UP(ret + page_off, PAGE_SIZE); + if (ret < len) { + len = ret; + osd_req_op_extent_update(req, 0, len); + more = false; + } } else { - iov_iter_advance(to, 0); + num_pages = calc_pages_for(off, len); + page_off = off & ~PAGE_MASK; + pages = ceph_alloc_page_vector(num_pages, GFP_KERNEL); + if (IS_ERR(pages)) { + ceph_osdc_put_request(req); + ret = PTR_ERR(pages); + break; + } } - ceph_put_page_vector(pages, num_pages, false); - } else { - num_pages = calc_pages_for(off, len); - pages = ceph_alloc_page_vector(num_pages, GFP_KERNEL); - if (IS_ERR(pages)) - return PTR_ERR(pages); - - ret = striped_read(inode, off, len, pages, num_pages, - (off & ~PAGE_MASK), checkeof); - if (ret > 0) { - int l, k = 0; - size_t left = ret; - - while (left) { - size_t page_off = off & ~PAGE_MASK; - size_t copy = min_t(size_t, left, - PAGE_SIZE - page_off); - l = copy_page_to_iter(pages[k++], page_off, - copy, to); - off += l; - left -= l; - if (l < copy) + + osd_req_op_extent_osd_data_pages(req, 0, pages, len, page_off, + false, false); + ret = ceph_osdc_start_request(osdc, req, false); + if (!ret) + ret = ceph_osdc_wait_request(osdc, req); + ceph_osdc_put_request(req); + + i_size = i_size_read(inode); + dout("sync_read %llu~%llu got %zd i_size %llu%s\n", + off, len, ret, i_size, (more ? " MORE" : "")); + + if (ret == -ENOENT) + ret = 0; + if (ret >= 0 && ret < len && (off + ret < i_size)) { + int zlen = min(len - ret, i_size - off - ret); + int zoff = page_off + ret; + dout("sync_read zero gap %llu~%llu\n", + off + ret, off + ret + zlen); + ceph_zero_page_vector_range(zoff, zlen, pages); + ret += zlen; + } + + if (unlikely(iov_iter_is_pipe(to))) { + if (ret > 0) { + iov_iter_advance(to, ret); + off += ret; + } else { + iov_iter_advance(to, 0); + } + ceph_put_page_vector(pages, num_pages, false); + } else { + int idx = 0; + size_t left = ret > 0 ? ret : 0; + while (left > 0) { + size_t len, copied; + page_off = off & ~PAGE_MASK; + len = min_t(size_t, left, PAGE_SIZE - page_off); + copied = copy_page_to_iter(pages[idx++], + page_off, len, to); + off += copied; + left -= copied; + if (copied < len) { + ret = -EFAULT; break; + } } + ceph_release_page_vector(pages, num_pages); } - ceph_release_page_vector(pages, num_pages); + + if (ret <= 0 || off >= i_size || !more) + break; } if (off > iocb->ki_pos) { + if (ret >= 0 && + iov_iter_count(to) > 0 && off >= i_size_read(inode)) + *retry_op = CHECK_EOF; ret = off - iocb->ki_pos; iocb->ki_pos = off; } - dout("sync_read result %zd\n", ret); + dout("sync_read result %zd retry_op %d\n", ret, *retry_op); return ret; } @@ -821,7 +815,7 @@ static void ceph_aio_complete_req(struct ceph_osd_request *req) aio_req->total_len = rc + zlen; } - iov_iter_bvec(&i, ITER_BVEC, osd_data->bvec_pos.bvecs, + iov_iter_bvec(&i, READ, osd_data->bvec_pos.bvecs, osd_data->num_bvecs, osd_data->bvec_pos.iter.bi_size); iov_iter_advance(&i, rc); @@ -865,7 +859,7 @@ static void ceph_aio_retry_work(struct work_struct *work) } spin_unlock(&ci->i_ceph_lock); - req = ceph_osdc_alloc_request(orig_req->r_osdc, snapc, 2, + req = ceph_osdc_alloc_request(orig_req->r_osdc, snapc, 1, false, GFP_NOFS); if (!req) { ret = -ENOMEM; @@ -877,6 +871,11 @@ static void ceph_aio_retry_work(struct work_struct *work) ceph_oloc_copy(&req->r_base_oloc, &orig_req->r_base_oloc); ceph_oid_copy(&req->r_base_oid, &orig_req->r_base_oid); + req->r_ops[0] = orig_req->r_ops[0]; + + req->r_mtime = aio_req->mtime; + req->r_data_offset = req->r_ops[0].extent.offset; + ret = ceph_osdc_alloc_messages(req, GFP_NOFS); if (ret) { ceph_osdc_put_request(req); @@ -884,11 +883,6 @@ static void ceph_aio_retry_work(struct work_struct *work) goto out; } - req->r_ops[0] = orig_req->r_ops[0]; - - req->r_mtime = aio_req->mtime; - req->r_data_offset = req->r_ops[0].extent.offset; - ceph_osdc_put_request(orig_req); req->r_callback = ceph_aio_complete_req; @@ -1044,8 +1038,7 @@ ceph_direct_read_write(struct kiocb *iocb, struct iov_iter *iter, int zlen = min_t(size_t, len - ret, size - pos - ret); - iov_iter_bvec(&i, ITER_BVEC, bvecs, num_pages, - len); + iov_iter_bvec(&i, READ, bvecs, num_pages, len); iov_iter_advance(&i, ret); iov_iter_zero(zlen, &i); ret += zlen; @@ -1735,7 +1728,6 @@ static long ceph_fallocate(struct file *file, int mode, struct ceph_file_info *fi = file->private_data; struct inode *inode = file_inode(file); struct ceph_inode_info *ci = ceph_inode(inode); - struct ceph_fs_client *fsc = ceph_inode_to_client(inode); struct ceph_cap_flush *prealloc_cf; int want, got = 0; int dirty; @@ -1743,10 +1735,7 @@ static long ceph_fallocate(struct file *file, int mode, loff_t endoff = 0; loff_t size; - if ((offset + length) > max(i_size_read(inode), fsc->max_file_size)) - return -EFBIG; - - if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE)) + if (mode != (FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE)) return -EOPNOTSUPP; if (!S_ISREG(inode->i_mode)) @@ -1763,18 +1752,6 @@ static long ceph_fallocate(struct file *file, int mode, goto unlock; } - if (!(mode & (FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE)) && - ceph_quota_is_max_bytes_exceeded(inode, offset + length)) { - ret = -EDQUOT; - goto unlock; - } - - if (ceph_osdmap_flag(&fsc->client->osdc, CEPH_OSDMAP_FULL) && - !(mode & FALLOC_FL_PUNCH_HOLE)) { - ret = -ENOSPC; - goto unlock; - } - if (ci->i_inline_version != CEPH_INLINE_NONE) { ret = ceph_uninline_data(file, NULL); if (ret < 0) @@ -1782,12 +1759,12 @@ static long ceph_fallocate(struct file *file, int mode, } size = i_size_read(inode); - if (!(mode & FALLOC_FL_KEEP_SIZE)) { - endoff = offset + length; - ret = inode_newsize_ok(inode, endoff); - if (ret) - goto unlock; - } + + /* Are we punching a hole beyond EOF? */ + if (offset >= size) + goto unlock; + if ((offset + length) > size) + length = size - offset; if (fi->fmode & CEPH_FILE_MODE_LAZY) want = CEPH_CAP_FILE_BUFFER | CEPH_CAP_FILE_LAZYIO; @@ -1798,16 +1775,8 @@ static long ceph_fallocate(struct file *file, int mode, if (ret < 0) goto unlock; - if (mode & FALLOC_FL_PUNCH_HOLE) { - if (offset < size) - ceph_zero_pagecache_range(inode, offset, length); - ret = ceph_zero_objects(inode, offset, length); - } else if (endoff > size) { - truncate_pagecache_range(inode, size, -1); - if (ceph_inode_set_size(inode, endoff)) - ceph_check_caps(ceph_inode(inode), - CHECK_CAPS_AUTHONLY, NULL); - } + ceph_zero_pagecache_range(inode, offset, length); + ret = ceph_zero_objects(inode, offset, length); if (!ret) { spin_lock(&ci->i_ceph_lock); @@ -1817,9 +1786,6 @@ static long ceph_fallocate(struct file *file, int mode, spin_unlock(&ci->i_ceph_lock); if (dirty) __mark_inode_dirty(inode, dirty); - if ((endoff > size) && - ceph_quota_is_max_bytes_approaching(inode, endoff)) - ceph_check_caps(ci, CHECK_CAPS_NODELAY, NULL); } ceph_put_cap_refs(ci, got); @@ -1829,6 +1795,300 @@ unlock: return ret; } +/* + * This function tries to get FILE_WR capabilities for dst_ci and FILE_RD for + * src_ci. Two attempts are made to obtain both caps, and an error is return if + * this fails; zero is returned on success. + */ +static int get_rd_wr_caps(struct ceph_inode_info *src_ci, + loff_t src_endoff, int *src_got, + struct ceph_inode_info *dst_ci, + loff_t dst_endoff, int *dst_got) +{ + int ret = 0; + bool retrying = false; + +retry_caps: + ret = ceph_get_caps(dst_ci, CEPH_CAP_FILE_WR, CEPH_CAP_FILE_BUFFER, + dst_endoff, dst_got, NULL); + if (ret < 0) + return ret; + + /* + * Since we're already holding the FILE_WR capability for the dst file, + * we would risk a deadlock by using ceph_get_caps. Thus, we'll do some + * retry dance instead to try to get both capabilities. + */ + ret = ceph_try_get_caps(src_ci, CEPH_CAP_FILE_RD, CEPH_CAP_FILE_SHARED, + false, src_got); + if (ret <= 0) { + /* Start by dropping dst_ci caps and getting src_ci caps */ + ceph_put_cap_refs(dst_ci, *dst_got); + if (retrying) { + if (!ret) + /* ceph_try_get_caps masks EAGAIN */ + ret = -EAGAIN; + return ret; + } + ret = ceph_get_caps(src_ci, CEPH_CAP_FILE_RD, + CEPH_CAP_FILE_SHARED, src_endoff, + src_got, NULL); + if (ret < 0) + return ret; + /*... drop src_ci caps too, and retry */ + ceph_put_cap_refs(src_ci, *src_got); + retrying = true; + goto retry_caps; + } + return ret; +} + +static void put_rd_wr_caps(struct ceph_inode_info *src_ci, int src_got, + struct ceph_inode_info *dst_ci, int dst_got) +{ + ceph_put_cap_refs(src_ci, src_got); + ceph_put_cap_refs(dst_ci, dst_got); +} + +/* + * This function does several size-related checks, returning an error if: + * - source file is smaller than off+len + * - destination file size is not OK (inode_newsize_ok()) + * - max bytes quotas is exceeded + */ +static int is_file_size_ok(struct inode *src_inode, struct inode *dst_inode, + loff_t src_off, loff_t dst_off, size_t len) +{ + loff_t size, endoff; + + size = i_size_read(src_inode); + /* + * Don't copy beyond source file EOF. Instead of simply setting length + * to (size - src_off), just drop to VFS default implementation, as the + * local i_size may be stale due to other clients writing to the source + * inode. + */ + if (src_off + len > size) { + dout("Copy beyond EOF (%llu + %zu > %llu)\n", + src_off, len, size); + return -EOPNOTSUPP; + } + size = i_size_read(dst_inode); + + endoff = dst_off + len; + if (inode_newsize_ok(dst_inode, endoff)) + return -EOPNOTSUPP; + + if (ceph_quota_is_max_bytes_exceeded(dst_inode, endoff)) + return -EDQUOT; + + return 0; +} + +static ssize_t ceph_copy_file_range(struct file *src_file, loff_t src_off, + struct file *dst_file, loff_t dst_off, + size_t len, unsigned int flags) +{ + struct inode *src_inode = file_inode(src_file); + struct inode *dst_inode = file_inode(dst_file); + struct ceph_inode_info *src_ci = ceph_inode(src_inode); + struct ceph_inode_info *dst_ci = ceph_inode(dst_inode); + struct ceph_cap_flush *prealloc_cf; + struct ceph_object_locator src_oloc, dst_oloc; + struct ceph_object_id src_oid, dst_oid; + loff_t endoff = 0, size; + ssize_t ret = -EIO; + u64 src_objnum, dst_objnum, src_objoff, dst_objoff; + u32 src_objlen, dst_objlen, object_size; + int src_got = 0, dst_got = 0, err, dirty; + bool do_final_copy = false; + + if (src_inode == dst_inode) + return -EINVAL; + if (ceph_snap(dst_inode) != CEPH_NOSNAP) + return -EROFS; + + /* + * Some of the checks below will return -EOPNOTSUPP, which will force a + * fallback to the default VFS copy_file_range implementation. This is + * desirable in several cases (for ex, the 'len' is smaller than the + * size of the objects, or in cases where that would be more + * efficient). + */ + + if (ceph_test_mount_opt(ceph_inode_to_client(src_inode), NOCOPYFROM)) + return -EOPNOTSUPP; + + if ((src_ci->i_layout.stripe_unit != dst_ci->i_layout.stripe_unit) || + (src_ci->i_layout.stripe_count != dst_ci->i_layout.stripe_count) || + (src_ci->i_layout.object_size != dst_ci->i_layout.object_size)) + return -EOPNOTSUPP; + + if (len < src_ci->i_layout.object_size) + return -EOPNOTSUPP; /* no remote copy will be done */ + + prealloc_cf = ceph_alloc_cap_flush(); + if (!prealloc_cf) + return -ENOMEM; + + /* Start by sync'ing the source file */ + ret = file_write_and_wait_range(src_file, src_off, (src_off + len)); + if (ret < 0) + goto out; + + /* + * We need FILE_WR caps for dst_ci and FILE_RD for src_ci as other + * clients may have dirty data in their caches. And OSDs know nothing + * about caps, so they can't safely do the remote object copies. + */ + err = get_rd_wr_caps(src_ci, (src_off + len), &src_got, + dst_ci, (dst_off + len), &dst_got); + if (err < 0) { + dout("get_rd_wr_caps returned %d\n", err); + ret = -EOPNOTSUPP; + goto out; + } + + ret = is_file_size_ok(src_inode, dst_inode, src_off, dst_off, len); + if (ret < 0) + goto out_caps; + + size = i_size_read(dst_inode); + endoff = dst_off + len; + + /* Drop dst file cached pages */ + ret = invalidate_inode_pages2_range(dst_inode->i_mapping, + dst_off >> PAGE_SHIFT, + endoff >> PAGE_SHIFT); + if (ret < 0) { + dout("Failed to invalidate inode pages (%zd)\n", ret); + ret = 0; /* XXX */ + } + src_oloc.pool = src_ci->i_layout.pool_id; + src_oloc.pool_ns = ceph_try_get_string(src_ci->i_layout.pool_ns); + dst_oloc.pool = dst_ci->i_layout.pool_id; + dst_oloc.pool_ns = ceph_try_get_string(dst_ci->i_layout.pool_ns); + + ceph_calc_file_object_mapping(&src_ci->i_layout, src_off, + src_ci->i_layout.object_size, + &src_objnum, &src_objoff, &src_objlen); + ceph_calc_file_object_mapping(&dst_ci->i_layout, dst_off, + dst_ci->i_layout.object_size, + &dst_objnum, &dst_objoff, &dst_objlen); + /* object-level offsets need to the same */ + if (src_objoff != dst_objoff) { + ret = -EOPNOTSUPP; + goto out_caps; + } + + /* + * Do a manual copy if the object offset isn't object aligned. + * 'src_objlen' contains the bytes left until the end of the object, + * starting at the src_off + */ + if (src_objoff) { + /* + * we need to temporarily drop all caps as we'll be calling + * {read,write}_iter, which will get caps again. + */ + put_rd_wr_caps(src_ci, src_got, dst_ci, dst_got); + ret = do_splice_direct(src_file, &src_off, dst_file, + &dst_off, src_objlen, flags); + if (ret < 0) { + dout("do_splice_direct returned %d\n", err); + goto out; + } + len -= ret; + err = get_rd_wr_caps(src_ci, (src_off + len), + &src_got, dst_ci, + (dst_off + len), &dst_got); + if (err < 0) + goto out; + err = is_file_size_ok(src_inode, dst_inode, + src_off, dst_off, len); + if (err < 0) + goto out_caps; + } + object_size = src_ci->i_layout.object_size; + while (len >= object_size) { + ceph_calc_file_object_mapping(&src_ci->i_layout, src_off, + object_size, &src_objnum, + &src_objoff, &src_objlen); + ceph_calc_file_object_mapping(&dst_ci->i_layout, dst_off, + object_size, &dst_objnum, + &dst_objoff, &dst_objlen); + ceph_oid_init(&src_oid); + ceph_oid_printf(&src_oid, "%llx.%08llx", + src_ci->i_vino.ino, src_objnum); + ceph_oid_init(&dst_oid); + ceph_oid_printf(&dst_oid, "%llx.%08llx", + dst_ci->i_vino.ino, dst_objnum); + /* Do an object remote copy */ + err = ceph_osdc_copy_from( + &ceph_inode_to_client(src_inode)->client->osdc, + src_ci->i_vino.snap, 0, + &src_oid, &src_oloc, + CEPH_OSD_OP_FLAG_FADVISE_SEQUENTIAL | + CEPH_OSD_OP_FLAG_FADVISE_NOCACHE, + &dst_oid, &dst_oloc, + CEPH_OSD_OP_FLAG_FADVISE_SEQUENTIAL | + CEPH_OSD_OP_FLAG_FADVISE_DONTNEED, 0); + if (err) { + dout("ceph_osdc_copy_from returned %d\n", err); + if (!ret) + ret = err; + goto out_caps; + } + len -= object_size; + src_off += object_size; + dst_off += object_size; + ret += object_size; + } + + if (len) + /* We still need one final local copy */ + do_final_copy = true; + + file_update_time(dst_file); + if (endoff > size) { + int caps_flags = 0; + + /* Let the MDS know about dst file size change */ + if (ceph_quota_is_max_bytes_approaching(dst_inode, endoff)) + caps_flags |= CHECK_CAPS_NODELAY; + if (ceph_inode_set_size(dst_inode, endoff)) + caps_flags |= CHECK_CAPS_AUTHONLY; + if (caps_flags) + ceph_check_caps(dst_ci, caps_flags, NULL); + } + /* Mark Fw dirty */ + spin_lock(&dst_ci->i_ceph_lock); + dst_ci->i_inline_version = CEPH_INLINE_NONE; + dirty = __ceph_mark_dirty_caps(dst_ci, CEPH_CAP_FILE_WR, &prealloc_cf); + spin_unlock(&dst_ci->i_ceph_lock); + if (dirty) + __mark_inode_dirty(dst_inode, dirty); + +out_caps: + put_rd_wr_caps(src_ci, src_got, dst_ci, dst_got); + + if (do_final_copy) { + err = do_splice_direct(src_file, &src_off, dst_file, + &dst_off, len, flags); + if (err < 0) { + dout("do_splice_direct returned %d\n", err); + goto out; + } + len -= err; + ret += err; + } + +out: + ceph_free_cap_flush(prealloc_cf); + + return ret; +} + const struct file_operations ceph_file_fops = { .open = ceph_open, .release = ceph_release, @@ -1844,5 +2104,5 @@ const struct file_operations ceph_file_fops = { .unlocked_ioctl = ceph_ioctl, .compat_ioctl = ceph_ioctl, .fallocate = ceph_fallocate, + .copy_file_range = ceph_copy_file_range, }; - |