diff options
| -rw-r--r-- | fs/gfs2/aops.c | 9 | ||||
| -rw-r--r-- | fs/gfs2/bmap.c | 10 | ||||
| -rw-r--r-- | fs/gfs2/dir.c | 3 | ||||
| -rw-r--r-- | fs/gfs2/incore.h | 5 | ||||
| -rw-r--r-- | fs/gfs2/inode.c | 6 |
5 files changed, 17 insertions, 16 deletions
diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c index 44a77b631509..38e403a9e543 100644 --- a/fs/gfs2/aops.c +++ b/fs/gfs2/aops.c @@ -482,8 +482,8 @@ static int stuffed_readpage(struct gfs2_inode *ip, struct page *page) return error; kaddr = kmap_atomic(page); - if (dsize > (dibh->b_size - sizeof(struct gfs2_dinode))) - dsize = (dibh->b_size - sizeof(struct gfs2_dinode)); + if (dsize > gfs2_max_stuffed_size(ip)) + dsize = gfs2_max_stuffed_size(ip); memcpy(kaddr, dibh->b_data + sizeof(struct gfs2_dinode), dsize); memset(kaddr + dsize, 0, PAGE_SIZE - dsize); kunmap_atomic(kaddr); @@ -723,7 +723,7 @@ static int gfs2_write_begin(struct file *file, struct address_space *mapping, if (gfs2_is_stuffed(ip)) { error = 0; - if (pos + len > sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode)) { + if (pos + len > gfs2_max_stuffed_size(ip)) { error = gfs2_unstuff_dinode(ip, page); if (error == 0) goto prepare_write; @@ -830,7 +830,8 @@ static int gfs2_stuffed_write_end(struct inode *inode, struct buffer_head *dibh, void *kaddr; unsigned char *buf = dibh->b_data + sizeof(struct gfs2_dinode); - BUG_ON((pos + len) > (dibh->b_size - sizeof(struct gfs2_dinode))); + BUG_ON(pos + len > gfs2_max_stuffed_size(ip)); + kaddr = kmap_atomic(page); memcpy(buf + pos, kaddr + pos, copied); flush_dcache_page(page); diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c index 2ec11981e694..86863792f36a 100644 --- a/fs/gfs2/bmap.c +++ b/fs/gfs2/bmap.c @@ -69,8 +69,8 @@ static int gfs2_unstuffer_page(struct gfs2_inode *ip, struct buffer_head *dibh, void *kaddr = kmap(page); u64 dsize = i_size_read(inode); - if (dsize > (dibh->b_size - sizeof(struct gfs2_dinode))) - dsize = dibh->b_size - sizeof(struct gfs2_dinode); + if (dsize > gfs2_max_stuffed_size(ip)) + dsize = gfs2_max_stuffed_size(ip); memcpy(kaddr, dibh->b_data + sizeof(struct gfs2_dinode), dsize); memset(kaddr + dsize, 0, PAGE_SIZE - dsize); @@ -1692,8 +1692,7 @@ static int do_grow(struct inode *inode, u64 size) int error; int unstuff = 0; - if (gfs2_is_stuffed(ip) && - (size > (sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode)))) { + if (gfs2_is_stuffed(ip) && size > gfs2_max_stuffed_size(ip)) { error = gfs2_quota_lock_check(ip, &ap); if (error) return error; @@ -1928,8 +1927,7 @@ int gfs2_write_alloc_required(struct gfs2_inode *ip, u64 offset, return 0; if (gfs2_is_stuffed(ip)) { - if (offset + len > - sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode)) + if (offset + len > gfs2_max_stuffed_size(ip)) return 1; return 0; } diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c index 06a0d1947c77..7c21aea0266b 100644 --- a/fs/gfs2/dir.c +++ b/fs/gfs2/dir.c @@ -170,8 +170,7 @@ static int gfs2_dir_write_data(struct gfs2_inode *ip, const char *buf, if (!size) return 0; - if (gfs2_is_stuffed(ip) && - offset + size <= sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode)) + if (gfs2_is_stuffed(ip) && offset + size <= gfs2_max_stuffed_size(ip)) return gfs2_dir_write_stuffed(ip, buf, (unsigned int)offset, size); diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h index 6e18e9793ec4..9d4d7367175f 100644 --- a/fs/gfs2/incore.h +++ b/fs/gfs2/incore.h @@ -861,5 +861,10 @@ static inline void gfs2_sbstats_inc(const struct gfs2_glock *gl, int which) extern struct gfs2_rgrpd *gfs2_glock2rgrp(struct gfs2_glock *gl); +static inline unsigned gfs2_max_stuffed_size(const struct gfs2_inode *ip) +{ + return GFS2_SB(&ip->i_inode)->sd_sb.sb_bsize - sizeof(struct gfs2_dinode); +} + #endif /* __INCORE_DOT_H__ */ diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index 4e971b1c7f92..20281992d456 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -1184,11 +1184,10 @@ out_inodes: static int gfs2_symlink(struct inode *dir, struct dentry *dentry, const char *symname) { - struct gfs2_sbd *sdp = GFS2_SB(dir); unsigned int size; size = strlen(symname); - if (size > sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode) - 1) + if (size >= gfs2_max_stuffed_size(GFS2_I(dir))) return -ENAMETOOLONG; return gfs2_create_inode(dir, dentry, NULL, S_IFLNK | S_IRWXUGO, 0, symname, size, 0, NULL); @@ -1205,8 +1204,7 @@ static int gfs2_symlink(struct inode *dir, struct dentry *dentry, static int gfs2_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) { - struct gfs2_sbd *sdp = GFS2_SB(dir); - unsigned dsize = sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode); + unsigned dsize = gfs2_max_stuffed_size(GFS2_I(dir)); return gfs2_create_inode(dir, dentry, NULL, S_IFDIR | mode, 0, NULL, dsize, 0, NULL); } |