summaryrefslogtreecommitdiff
path: root/fs/gfs2/file.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/gfs2/file.c')
-rw-r--r--fs/gfs2/file.c83
1 files changed, 52 insertions, 31 deletions
diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c
index 80dd44dca028..6e600abf694a 100644
--- a/fs/gfs2/file.c
+++ b/fs/gfs2/file.c
@@ -337,7 +337,8 @@ static void gfs2_size_hint(struct file *filep, loff_t offset, size_t size)
size_t blks = (size + sdp->sd_sb.sb_bsize - 1) >> sdp->sd_sb.sb_bsize_shift;
int hint = min_t(size_t, INT_MAX, blks);
- atomic_set(&ip->i_res->rs_sizehint, hint);
+ if (hint > atomic_read(&ip->i_res->rs_sizehint))
+ atomic_set(&ip->i_res->rs_sizehint, hint);
}
/**
@@ -728,7 +729,6 @@ static int fallocate_chunk(struct inode *inode, loff_t offset, loff_t len,
struct gfs2_inode *ip = GFS2_I(inode);
struct buffer_head *dibh;
int error;
- loff_t size = len;
unsigned int nr_blks;
sector_t lblock = offset >> inode->i_blkbits;
@@ -762,11 +762,6 @@ static int fallocate_chunk(struct inode *inode, loff_t offset, loff_t len,
goto out;
}
}
- if (offset + size > inode->i_size && !(mode & FALLOC_FL_KEEP_SIZE))
- i_size_write(inode, offset + size);
-
- mark_inode_dirty(inode);
-
out:
brelse(dibh);
return error;
@@ -796,8 +791,7 @@ static void calc_max_reserv(struct gfs2_inode *ip, loff_t max, loff_t *len,
}
}
-static long gfs2_fallocate(struct file *file, int mode, loff_t offset,
- loff_t len)
+static long __gfs2_fallocate(struct file *file, int mode, loff_t offset, loff_t len)
{
struct inode *inode = file_inode(file);
struct gfs2_sbd *sdp = GFS2_SB(inode);
@@ -811,14 +805,9 @@ static long gfs2_fallocate(struct file *file, int mode, loff_t offset,
loff_t bsize_mask = ~((loff_t)sdp->sd_sb.sb_bsize - 1);
loff_t next = (offset + len - 1) >> sdp->sd_sb.sb_bsize_shift;
loff_t max_chunk_size = UINT_MAX & bsize_mask;
- struct gfs2_holder gh;
next = (next + 1) << sdp->sd_sb.sb_bsize_shift;
- /* We only support the FALLOC_FL_KEEP_SIZE mode */
- if (mode & ~FALLOC_FL_KEEP_SIZE)
- return -EOPNOTSUPP;
-
offset &= bsize_mask;
len = next - offset;
@@ -829,17 +818,6 @@ static long gfs2_fallocate(struct file *file, int mode, loff_t offset,
if (bytes == 0)
bytes = sdp->sd_sb.sb_bsize;
- error = gfs2_rs_alloc(ip);
- if (error)
- return error;
-
- mutex_lock(&inode->i_mutex);
-
- gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh);
- error = gfs2_glock_nq(&gh);
- if (unlikely(error))
- goto out_uninit;
-
gfs2_size_hint(file, offset, len);
while (len > 0) {
@@ -852,8 +830,7 @@ static long gfs2_fallocate(struct file *file, int mode, loff_t offset,
}
error = gfs2_quota_lock_check(ip);
if (error)
- goto out_unlock;
-
+ return error;
retry:
gfs2_write_calc_reserv(ip, bytes, &data_blocks, &ind_blocks);
@@ -895,20 +872,64 @@ retry:
gfs2_quota_unlock(ip);
}
- if (error == 0)
- error = generic_write_sync(file, pos, count);
- goto out_unlock;
+ if (!(mode & FALLOC_FL_KEEP_SIZE) && (pos + count) > inode->i_size) {
+ i_size_write(inode, pos + count);
+ /* Marks the inode as dirty */
+ file_update_time(file);
+ }
+
+ return generic_write_sync(file, pos, count);
out_trans_fail:
gfs2_inplace_release(ip);
out_qunlock:
gfs2_quota_unlock(ip);
+ return error;
+}
+
+static long gfs2_fallocate(struct file *file, int mode, loff_t offset, loff_t len)
+{
+ struct inode *inode = file_inode(file);
+ struct gfs2_inode *ip = GFS2_I(inode);
+ struct gfs2_holder gh;
+ int ret;
+
+ if (mode & ~FALLOC_FL_KEEP_SIZE)
+ return -EOPNOTSUPP;
+
+ mutex_lock(&inode->i_mutex);
+
+ gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh);
+ ret = gfs2_glock_nq(&gh);
+ if (ret)
+ goto out_uninit;
+
+ if (!(mode & FALLOC_FL_KEEP_SIZE) &&
+ (offset + len) > inode->i_size) {
+ ret = inode_newsize_ok(inode, offset + len);
+ if (ret)
+ goto out_unlock;
+ }
+
+ ret = get_write_access(inode);
+ if (ret)
+ goto out_unlock;
+
+ ret = gfs2_rs_alloc(ip);
+ if (ret)
+ goto out_putw;
+
+ ret = __gfs2_fallocate(file, mode, offset, len);
+ if (ret)
+ gfs2_rs_deltree(ip->i_res);
+out_putw:
+ put_write_access(inode);
out_unlock:
gfs2_glock_dq(&gh);
out_uninit:
gfs2_holder_uninit(&gh);
mutex_unlock(&inode->i_mutex);
- return error;
+ return ret;
}
#ifdef CONFIG_GFS2_FS_LOCKING_DLM