diff options
author | 2010-08-11 09:53:11 +0100 | |
---|---|---|
committer | 2010-09-20 11:18:29 +0100 | |
commit | a2e0f79939e09e74698564b88dee709db208e1e2 (patch) | |
tree | 0018e445e3d47c4558901153733899ef672f789e | |
parent | GFS2: New truncate sequence (diff) | |
download | linux-a2e0f79939e09e74698564b88dee709db208e1e2.tar.gz linux-a2e0f79939e09e74698564b88dee709db208e1e2.tar.bz2 linux-a2e0f79939e09e74698564b88dee709db208e1e2.zip |
GFS2: Remove i_disksize
With the update of the truncate code, ip->i_disksize and
inode->i_size are merely copies of each other. This means
we can remove ip->i_disksize and use inode->i_size exclusively
reducing the size of a GFS2 inode by 8 bytes.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
-rw-r--r-- | fs/gfs2/aops.c | 6 | ||||
-rw-r--r-- | fs/gfs2/bmap.c | 12 | ||||
-rw-r--r-- | fs/gfs2/dir.c | 28 | ||||
-rw-r--r-- | fs/gfs2/file.c | 2 | ||||
-rw-r--r-- | fs/gfs2/glops.c | 5 | ||||
-rw-r--r-- | fs/gfs2/incore.h | 1 | ||||
-rw-r--r-- | fs/gfs2/inode.c | 9 | ||||
-rw-r--r-- | fs/gfs2/inode.h | 13 | ||||
-rw-r--r-- | fs/gfs2/ops_fstype.c | 2 | ||||
-rw-r--r-- | fs/gfs2/ops_inode.c | 10 | ||||
-rw-r--r-- | fs/gfs2/quota.c | 13 | ||||
-rw-r--r-- | fs/gfs2/rgrp.c | 6 | ||||
-rw-r--r-- | fs/gfs2/super.c | 11 |
13 files changed, 60 insertions, 58 deletions
diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c index f687f25fb7ff..c92f36ba3fc9 100644 --- a/fs/gfs2/aops.c +++ b/fs/gfs2/aops.c @@ -800,10 +800,8 @@ static int gfs2_stuffed_write_end(struct inode *inode, struct buffer_head *dibh, page_cache_release(page); if (copied) { - if (inode->i_size < to) { + if (inode->i_size < to) i_size_write(inode, to); - ip->i_disksize = inode->i_size; - } gfs2_dinode_out(ip, di); mark_inode_dirty(inode); } @@ -874,8 +872,6 @@ static int gfs2_write_end(struct file *file, struct address_space *mapping, ret = generic_write_end(file, mapping, pos, len, copied, page, fsdata); if (ret > 0) { - if (inode->i_size > ip->i_disksize) - ip->i_disksize = inode->i_size; gfs2_dinode_out(ip, dibh->b_data); mark_inode_dirty(inode); } diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c index 20b971ad4973..04513e997df6 100644 --- a/fs/gfs2/bmap.c +++ b/fs/gfs2/bmap.c @@ -131,7 +131,7 @@ int gfs2_unstuff_dinode(struct gfs2_inode *ip, struct page *page) if (error) goto out; - if (ip->i_disksize) { + if (i_size_read(&ip->i_inode)) { /* Get a free block, fill it with the stuffed data, and write it out to disk */ @@ -160,7 +160,7 @@ int gfs2_unstuff_dinode(struct gfs2_inode *ip, struct page *page) di = (struct gfs2_dinode *)dibh->b_data; gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode)); - if (ip->i_disksize) { + if (i_size_read(&ip->i_inode)) { *(__be64 *)(di + 1) = cpu_to_be64(block); gfs2_add_inode_blocks(&ip->i_inode, 1); di->di_blocks = cpu_to_be64(gfs2_get_inode_blocks(&ip->i_inode)); @@ -985,7 +985,6 @@ static int trunc_start(struct inode *inode, u64 oldsize, u64 newsize) } i_size_write(inode, newsize); - ip->i_disksize = newsize; ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME; gfs2_dinode_out(ip, dibh->b_data); @@ -1051,7 +1050,7 @@ static int trunc_end(struct gfs2_inode *ip) if (error) goto out; - if (!ip->i_disksize) { + if (!i_size_read(&ip->i_inode)) { ip->i_height = 0; ip->i_goal = ip->i_no_addr; gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode)); @@ -1167,7 +1166,6 @@ static int do_grow(struct inode *inode, u64 size) goto do_end_trans; i_size_write(inode, size); - ip->i_disksize = size; ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME; gfs2_trans_add_bh(ip->i_gl, dibh, 1); gfs2_dinode_out(ip, dibh->b_data); @@ -1219,7 +1217,7 @@ int gfs2_setattr_size(struct inode *inode, u64 newsize) int gfs2_truncatei_resume(struct gfs2_inode *ip) { int error; - error = trunc_dealloc(ip, ip->i_disksize); + error = trunc_dealloc(ip, i_size_read(&ip->i_inode)); if (!error) error = trunc_end(ip); return error; @@ -1260,7 +1258,7 @@ int gfs2_write_alloc_required(struct gfs2_inode *ip, u64 offset, shift = sdp->sd_sb.sb_bsize_shift; BUG_ON(gfs2_is_dir(ip)); - end_of_file = (ip->i_disksize + sdp->sd_sb.sb_bsize - 1) >> shift; + end_of_file = (i_size_read(&ip->i_inode) + sdp->sd_sb.sb_bsize - 1) >> shift; lblock = offset >> shift; lblock_stop = (offset + len + sdp->sd_sb.sb_bsize - 1) >> shift; if (lblock_stop > end_of_file) diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c index b9dd88a78dd4..c1042ae438cc 100644 --- a/fs/gfs2/dir.c +++ b/fs/gfs2/dir.c @@ -127,8 +127,8 @@ static int gfs2_dir_write_stuffed(struct gfs2_inode *ip, const char *buf, gfs2_trans_add_bh(ip->i_gl, dibh, 1); memcpy(dibh->b_data + offset + sizeof(struct gfs2_dinode), buf, size); - if (ip->i_disksize < offset + size) - ip->i_disksize = offset + size; + if (ip->i_inode.i_size < offset + size) + i_size_write(&ip->i_inode, offset + size); ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME; gfs2_dinode_out(ip, dibh->b_data); @@ -225,8 +225,8 @@ out: if (error) return error; - if (ip->i_disksize < offset + copied) - ip->i_disksize = offset + copied; + if (ip->i_inode.i_size < offset + copied) + i_size_write(&ip->i_inode, offset + copied); ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME; gfs2_trans_add_bh(ip->i_gl, dibh, 1); @@ -275,12 +275,13 @@ static int gfs2_dir_read_data(struct gfs2_inode *ip, char *buf, u64 offset, unsigned int o; int copied = 0; int error = 0; + u64 disksize = i_size_read(&ip->i_inode); - if (offset >= ip->i_disksize) + if (offset >= disksize) return 0; - if (offset + size > ip->i_disksize) - size = ip->i_disksize - offset; + if (offset + size > disksize) + size = disksize - offset; if (!size) return 0; @@ -727,7 +728,7 @@ static struct gfs2_dirent *gfs2_dirent_search(struct inode *inode, unsigned hsize = 1 << ip->i_depth; unsigned index; u64 ln; - if (hsize * sizeof(u64) != ip->i_disksize) { + if (hsize * sizeof(u64) != i_size_read(inode)) { gfs2_consist_inode(ip); return ERR_PTR(-EIO); } @@ -879,7 +880,7 @@ static int dir_make_exhash(struct inode *inode) for (x = sdp->sd_hash_ptrs; x--; lp++) *lp = cpu_to_be64(bn); - dip->i_disksize = sdp->sd_sb.sb_bsize / 2; + i_size_write(inode, sdp->sd_sb.sb_bsize / 2); gfs2_add_inode_blocks(&dip->i_inode, 1); dip->i_diskflags |= GFS2_DIF_EXHASH; @@ -1057,11 +1058,12 @@ static int dir_double_exhash(struct gfs2_inode *dip) u64 *buf; u64 *from, *to; u64 block; + u64 disksize = i_size_read(&dip->i_inode); int x; int error = 0; hsize = 1 << dip->i_depth; - if (hsize * sizeof(u64) != dip->i_disksize) { + if (hsize * sizeof(u64) != disksize) { gfs2_consist_inode(dip); return -EIO; } @@ -1072,7 +1074,7 @@ static int dir_double_exhash(struct gfs2_inode *dip) if (!buf) return -ENOMEM; - for (block = dip->i_disksize >> sdp->sd_hash_bsize_shift; block--;) { + for (block = disksize >> sdp->sd_hash_bsize_shift; block--;) { error = gfs2_dir_read_data(dip, (char *)buf, block * sdp->sd_hash_bsize, sdp->sd_hash_bsize, 1); @@ -1370,7 +1372,7 @@ static int dir_e_read(struct inode *inode, u64 *offset, void *opaque, unsigned depth = 0; hsize = 1 << dip->i_depth; - if (hsize * sizeof(u64) != dip->i_disksize) { + if (hsize * sizeof(u64) != i_size_read(inode)) { gfs2_consist_inode(dip); return -EIO; } @@ -1784,7 +1786,7 @@ static int foreach_leaf(struct gfs2_inode *dip, leaf_call_t lc, void *data) int error = 0; hsize = 1 << dip->i_depth; - if (hsize * sizeof(u64) != dip->i_disksize) { + if (hsize * sizeof(u64) != i_size_read(&dip->i_inode)) { gfs2_consist_inode(dip); return -EIO; } diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c index 4edd662c8232..daadcd2e755f 100644 --- a/fs/gfs2/file.c +++ b/fs/gfs2/file.c @@ -491,7 +491,7 @@ static int gfs2_open(struct inode *inode, struct file *file) goto fail; if (!(file->f_flags & O_LARGEFILE) && - ip->i_disksize > MAX_NON_LFS) { + i_size_read(inode) > MAX_NON_LFS) { error = -EOVERFLOW; goto fail_gunlock; } diff --git a/fs/gfs2/glops.c b/fs/gfs2/glops.c index 49f97d3bb690..621d80e8fb2a 100644 --- a/fs/gfs2/glops.c +++ b/fs/gfs2/glops.c @@ -262,13 +262,12 @@ static int inode_go_dump(struct seq_file *seq, const struct gfs2_glock *gl) const struct gfs2_inode *ip = gl->gl_object; if (ip == NULL) return 0; - gfs2_print_dbg(seq, " I: n:%llu/%llu t:%u f:0x%02lx d:0x%08x s:%llu/%llu\n", + gfs2_print_dbg(seq, " I: n:%llu/%llu t:%u f:0x%02lx d:0x%08x s:%llu\n", (unsigned long long)ip->i_no_formal_ino, (unsigned long long)ip->i_no_addr, IF2DT(ip->i_inode.i_mode), ip->i_flags, (unsigned int)ip->i_diskflags, - (unsigned long long)ip->i_inode.i_size, - (unsigned long long)ip->i_disksize); + (unsigned long long)i_size_read(&ip->i_inode)); return 0; } diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h index fdbf4b366fa5..c11971775275 100644 --- a/fs/gfs2/incore.h +++ b/fs/gfs2/incore.h @@ -267,7 +267,6 @@ struct gfs2_inode { u64 i_no_formal_ino; u64 i_generation; u64 i_eattr; - loff_t i_disksize; unsigned long i_flags; /* GIF_... */ struct gfs2_glock *i_gl; /* Move into i_gh? */ struct gfs2_holder i_iopen_gh; diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index 08140f185a37..06370f8bd8cf 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -359,8 +359,7 @@ static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf) * to do that. */ ip->i_inode.i_nlink = be32_to_cpu(str->di_nlink); - ip->i_disksize = be64_to_cpu(str->di_size); - i_size_write(&ip->i_inode, ip->i_disksize); + i_size_write(&ip->i_inode, be64_to_cpu(str->di_size)); gfs2_set_inode_blocks(&ip->i_inode, be64_to_cpu(str->di_blocks)); atime.tv_sec = be64_to_cpu(str->di_atime); atime.tv_nsec = be32_to_cpu(str->di_atime_nsec); @@ -1055,7 +1054,7 @@ void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf) str->di_uid = cpu_to_be32(ip->i_inode.i_uid); str->di_gid = cpu_to_be32(ip->i_inode.i_gid); str->di_nlink = cpu_to_be32(ip->i_inode.i_nlink); - str->di_size = cpu_to_be64(ip->i_disksize); + str->di_size = cpu_to_be64(i_size_read(&ip->i_inode)); str->di_blocks = cpu_to_be64(gfs2_get_inode_blocks(&ip->i_inode)); str->di_atime = cpu_to_be64(ip->i_inode.i_atime.tv_sec); str->di_mtime = cpu_to_be64(ip->i_inode.i_mtime.tv_sec); @@ -1085,8 +1084,8 @@ void gfs2_dinode_print(const struct gfs2_inode *ip) (unsigned long long)ip->i_no_formal_ino); printk(KERN_INFO " no_addr = %llu\n", (unsigned long long)ip->i_no_addr); - printk(KERN_INFO " i_disksize = %llu\n", - (unsigned long long)ip->i_disksize); + printk(KERN_INFO " i_size = %llu\n", + (unsigned long long)i_size_read(&ip->i_inode)); printk(KERN_INFO " blocks = %llu\n", (unsigned long long)gfs2_get_inode_blocks(&ip->i_inode)); printk(KERN_INFO " i_goal = %llu\n", diff --git a/fs/gfs2/inode.h b/fs/gfs2/inode.h index 300ada3f21de..15ff4df20aab 100644 --- a/fs/gfs2/inode.h +++ b/fs/gfs2/inode.h @@ -80,6 +80,19 @@ static inline void gfs2_inum_out(const struct gfs2_inode *ip, dent->de_inum.no_addr = cpu_to_be64(ip->i_no_addr); } +static inline int gfs2_check_internal_file_size(struct inode *inode, + u64 minsize, u64 maxsize) +{ + u64 size = i_size_read(inode); + if (size < minsize || size > maxsize) + goto err; + if (size & ((1 << inode->i_blkbits) - 1)) + goto err; + return 0; +err: + gfs2_consist_inode(GFS2_I(inode)); + return -EIO; +} extern void gfs2_set_iop(struct inode *inode); extern struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned type, diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c index 4d4b1e8ac64c..5b5c87dfbfee 100644 --- a/fs/gfs2/ops_fstype.c +++ b/fs/gfs2/ops_fstype.c @@ -586,7 +586,7 @@ static int map_journal_extents(struct gfs2_sbd *sdp) prev_db = 0; - for (lb = 0; lb < ip->i_disksize >> sdp->sd_sb.sb_bsize_shift; lb++) { + for (lb = 0; lb < i_size_read(jd->jd_inode) >> sdp->sd_sb.sb_bsize_shift; lb++) { bh.b_state = 0; bh.b_blocknr = 0; bh.b_size = 1 << ip->i_inode.i_blkbits; diff --git a/fs/gfs2/ops_inode.c b/fs/gfs2/ops_inode.c index 1d3f2fb466bd..ee6ffd590418 100644 --- a/fs/gfs2/ops_inode.c +++ b/fs/gfs2/ops_inode.c @@ -406,7 +406,6 @@ static int gfs2_symlink(struct inode *dir, struct dentry *dentry, ip = ghs[1].gh_gl->gl_object; - ip->i_disksize = size; i_size_write(inode, size); error = gfs2_meta_inode_buffer(ip, &dibh); @@ -461,7 +460,7 @@ static int gfs2_mkdir(struct inode *dir, struct dentry *dentry, int mode) ip = ghs[1].gh_gl->gl_object; ip->i_inode.i_nlink = 2; - ip->i_disksize = sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode); + i_size_write(inode, sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode)); ip->i_diskflags |= GFS2_DIF_JDATA; ip->i_entries = 2; @@ -990,7 +989,7 @@ static void *gfs2_follow_link(struct dentry *dentry, struct nameidata *nd) struct gfs2_inode *ip = GFS2_I(dentry->d_inode); struct gfs2_holder i_gh; struct buffer_head *dibh; - unsigned int x; + unsigned int x, size; char *buf; int error; @@ -1002,7 +1001,8 @@ static void *gfs2_follow_link(struct dentry *dentry, struct nameidata *nd) return NULL; } - if (!ip->i_disksize) { + size = (unsigned int)i_size_read(&ip->i_inode); + if (size == 0) { gfs2_consist_inode(ip); buf = ERR_PTR(-EIO); goto out; @@ -1014,7 +1014,7 @@ static void *gfs2_follow_link(struct dentry *dentry, struct nameidata *nd) goto out; } - x = ip->i_disksize + 1; + x = size + 1; buf = kmalloc(x, GFP_NOFS); if (!buf) buf = ERR_PTR(-ENOMEM); diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c index 1bc6b5695e6d..9bc6dd9a5443 100644 --- a/fs/gfs2/quota.c +++ b/fs/gfs2/quota.c @@ -735,10 +735,8 @@ get_a_page: goto out; size = loc + sizeof(struct gfs2_quota); - if (size > inode->i_size) { - ip->i_disksize = size; + if (size > inode->i_size) i_size_write(inode, size); - } inode->i_mtime = inode->i_atime = CURRENT_TIME; gfs2_trans_add_bh(ip->i_gl, dibh, 1); gfs2_dinode_out(ip, dibh->b_data); @@ -1190,18 +1188,17 @@ static void gfs2_quota_change_in(struct gfs2_quota_change_host *qc, const void * int gfs2_quota_init(struct gfs2_sbd *sdp) { struct gfs2_inode *ip = GFS2_I(sdp->sd_qc_inode); - unsigned int blocks = ip->i_disksize >> sdp->sd_sb.sb_bsize_shift; + u64 size = i_size_read(sdp->sd_qc_inode); + unsigned int blocks = size >> sdp->sd_sb.sb_bsize_shift; unsigned int x, slot = 0; unsigned int found = 0; u64 dblock; u32 extlen = 0; int error; - if (!ip->i_disksize || ip->i_disksize > (64 << 20) || - ip->i_disksize & (sdp->sd_sb.sb_bsize - 1)) { - gfs2_consist_inode(ip); + if (gfs2_check_internal_file_size(sdp->sd_qc_inode, 1, 64 << 20)) return -EIO; - } + sdp->sd_quota_slots = blocks * sdp->sd_qc_per_block; sdp->sd_quota_chunks = DIV_ROUND_UP(sdp->sd_quota_slots, 8 * PAGE_SIZE); diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c index 171a744f8e45..370c29b536ea 100644 --- a/fs/gfs2/rgrp.c +++ b/fs/gfs2/rgrp.c @@ -500,7 +500,7 @@ u64 gfs2_ri_total(struct gfs2_sbd *sdp) for (rgrps = 0;; rgrps++) { loff_t pos = rgrps * sizeof(struct gfs2_rindex); - if (pos + sizeof(struct gfs2_rindex) >= ip->i_disksize) + if (pos + sizeof(struct gfs2_rindex) >= i_size_read(inode)) break; error = gfs2_internal_read(ip, &ra_state, buf, &pos, sizeof(struct gfs2_rindex)); @@ -588,7 +588,7 @@ static int gfs2_ri_update(struct gfs2_inode *ip) struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); struct inode *inode = &ip->i_inode; struct file_ra_state ra_state; - u64 rgrp_count = ip->i_disksize; + u64 rgrp_count = i_size_read(inode); int error; do_div(rgrp_count, sizeof(struct gfs2_rindex)); @@ -628,7 +628,7 @@ static int gfs2_ri_update_special(struct gfs2_inode *ip) for (sdp->sd_rgrps = 0;; sdp->sd_rgrps++) { /* Ignore partials */ if ((sdp->sd_rgrps + 1) * sizeof(struct gfs2_rindex) > - ip->i_disksize) + i_size_read(inode)) break; error = read_rindex_entry(ip, &ra_state); if (error) { diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c index 77cb9f830ee4..e031fa4965a3 100644 --- a/fs/gfs2/super.c +++ b/fs/gfs2/super.c @@ -342,15 +342,14 @@ int gfs2_jdesc_check(struct gfs2_jdesc *jd) { struct gfs2_inode *ip = GFS2_I(jd->jd_inode); struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); + u64 size = i_size_read(jd->jd_inode); - if (ip->i_disksize < (8 << 20) || ip->i_disksize > (1 << 30) || - (ip->i_disksize & (sdp->sd_sb.sb_bsize - 1))) { - gfs2_consist_inode(ip); + if (gfs2_check_internal_file_size(jd->jd_inode, 8 << 20, 1 << 30)) return -EIO; - } - jd->jd_blocks = ip->i_disksize >> sdp->sd_sb.sb_bsize_shift; - if (gfs2_write_alloc_required(ip, 0, ip->i_disksize)) { + jd->jd_blocks = size >> sdp->sd_sb.sb_bsize_shift; + + if (gfs2_write_alloc_required(ip, 0, size)) { gfs2_consist_inode(ip); return -EIO; } |