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GFS2: Allocate reservation during splice_write 

This patch adds a GFS2-specific function for splice_write which
first calls function gfs2_rs_alloc to make sure a reservation
structure has been allocated before attempting to reserve blocks.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Acked-by: Steven Whitehouse <swhiteho@redhat.com>
This commit is contained in:
Bob Peterson 2015-02-19 08:02:16 -06:00
parent 932e468a37
commit f42a69fadc
1 changed files with 18 additions and 2 deletions
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20
fs/gfs2/file.c
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@ -1063,6 +1063,22 @@ static int gfs2_flock(struct file *file, int cmd, struct file_lock *fl)
} }
} }
static ssize_t gfs2_file_splice_write(struct pipe_inode_info *pipe,
struct file *out, loff_t *ppos,
size_t len, unsigned int flags)
{
int error;
struct gfs2_inode *ip = GFS2_I(out->f_mapping->host);
error = gfs2_rs_alloc(ip);
if (error)
return (ssize_t)error;
gfs2_size_hint(out, *ppos, len);
return iter_file_splice_write(pipe, out, ppos, len, flags);
}
const struct file_operations gfs2_file_fops = { const struct file_operations gfs2_file_fops = {
.llseek = gfs2_llseek, .llseek = gfs2_llseek,
.read = new_sync_read, .read = new_sync_read,
@ -1077,7 +1093,7 @@ const struct file_operations gfs2_file_fops = {
.lock = gfs2_lock, .lock = gfs2_lock,
.flock = gfs2_flock, .flock = gfs2_flock,
.splice_read = generic_file_splice_read, .splice_read = generic_file_splice_read,
.splice_write = iter_file_splice_write, .splice_write = gfs2_file_splice_write,
.setlease = simple_nosetlease, .setlease = simple_nosetlease,
.fallocate = gfs2_fallocate, .fallocate = gfs2_fallocate,
}; };
@ -1107,7 +1123,7 @@ const struct file_operations gfs2_file_fops_nolock = {
.release = gfs2_release, .release = gfs2_release,
.fsync = gfs2_fsync, .fsync = gfs2_fsync,
.splice_read = generic_file_splice_read, .splice_read = generic_file_splice_read,
.splice_write = iter_file_splice_write, .splice_write = gfs2_file_splice_write,
.setlease = generic_setlease, .setlease = generic_setlease,
.fallocate = gfs2_fallocate, .fallocate = gfs2_fallocate,
}; };